Blending oscillation device and magnetic attraction column structure of oscillation platform thereof

Abstract

The utility model provides a blending oscillation device and a magnetic suction column structure of an oscillation platform of the blending oscillation device. The bottom surface of the oscillation platform is provided with three ball bearing surfaces which are distributed along the circumference in an array manner and at least three magnetic columns which vertically extend downwards, and the magnetic columns are sleeved with rolling bearings; the upper surface of a lower base body of the base unit is provided with three concave ball containing holes and at least three concave polarization track groove holes, and balls are arranged in the ball containing holes. An elastic ring is arranged on the inner wall of the polarization track groove hole, and the height position of the elastic ring is matched with the rolling bearing on the magnetic attraction column. The oscillation platform is supported through three balls with the same height, the three points form a stable supporting face, under the non-contact magnetic attraction effect, the oscillation platform can still be kept on the same plane during high-frequency oscillation, and the operation stability is improved; during oscillation, the column body of the magnetic column is firstly buffered by the contact between the elastic ring and the rolling bearing, and then the column body of the magnetic column is contacted with the inner wall of the polarization track groove hole, so that the noise during high-frequency oscillation can be obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sample liquid mixing, in particular to a mixing oscillation device and a magnetic column structure of an oscillation platform thereof. Background Art

[0002] Oscillators are commonly used in laboratories, widely used in biology, chemistry, medicine, and other fields, for rapid sample mixing and oscillation. The operating principle of an oscillator is primarily based on rotational or oscillatory motion. An electric drive creates a strong eddy current or reciprocating motion within the sample container, thereby achieving rapid sample mixing and oscillation. Vortex mixers utilize the principle of eccentric rotation, using a drive mechanism to generate a strong eddy current within the liquid container, achieving rapid sample mixing and oscillation. These vortex mixers are suitable for mixing small sample volumes.

[0003] The existing mixing oscillator has a relatively high operating noise, mainly because the support stability of the oscillation platform is not high. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a mixing and oscillating device and a magnetic column structure of an oscillating platform thereof.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is: the magnetic column structure of the oscillating platform includes:

[0006] An oscillating platform, the upper surface of which is used to place the sample well plate, the bottom surface of the oscillating platform is provided with three ball bearing surfaces distributed along the circumference of the array, the bottom surface of the oscillating platform is also provided with at least three magnetic columns extending vertically downward, the magnetic columns are provided with rolling bearings, and the bottom of the magnetic columns is installed with an upper magnet;

[0007] The base unit includes a lower base body, the upper surface of which is provided with three concave ball-receiving holes, the ball-receiving holes being provided with balls, and the tops of the balls being in contact with the ball-supporting surface of the oscillating platform; the upper surface of the lower base body is also provided with at least three concave polarization track slots, the bottoms of the polarization track slots are provided with lower magnets, the magnetic column extends downward into the polarization track slots, the upper magnet and the lower magnet attract each other, the bottom surface of the magnetic column is in a non-contact state with the bottom surface of the polarization track slot, and the inner wall of the polarization track slot is provided with a second elastic ring, the height position of the second elastic ring matches the rolling bearing on the magnetic column.

[0008] Furthermore, the magnetic column includes a connecting piece, a rolling bearing, a copper column and an upper magnet. The connecting piece is fixedly connected to the bottom surface of the oscillation platform, the rolling bearing is sleeved in the middle of the connecting piece, the copper column is fixedly connected to the bottom end of the connecting piece, and the upper magnet is embedded in the bottom end of the copper column.

[0009] Furthermore, the rolling bearing is coaxially arranged with the copper column, the outer diameter of the copper column is larger than the outer diameter of the rolling bearing, the difference between the outer diameter of the copper column and the outer diameter of the rolling bearing is a; the protrusion of the inner ring of the second elastic ring in a free state from the inner wall of the polarization track slot is b, then b>a / 2+0.5mm.

[0010] Furthermore, 0.1mm≤a≤1mm.

[0011] Furthermore, the ball bearing surface is provided with an upper wear-resistant ceramic sheet.

[0012] Furthermore, a lower wear-resistant ceramic sheet is provided on the bottom surface of the ball accommodating hole.

[0013] Furthermore, the ball is a nylon ball.

[0014] Furthermore, a first elastic ring is provided in the middle of the inner wall of the ball accommodating hole, and the height position of the first elastic ring matches the height of the center of the ball.

[0015] The mixing oscillation device comprises an oscillation platform and a base unit, wherein the magnetic column structure of the oscillation platform is used between the oscillation platform and the base unit.

[0016] The beneficial effects of the utility model are as follows: the oscillation platform is supported by three balls of the same height, and the three points form a stable support surface. Under the action of non-contact magnetic attraction, the oscillation platform can still remain in the same plane during high-frequency oscillation, thereby improving the smoothness of operation; during oscillation, the column body of the magnetic column is first buffered by the contact between the elastic ring and the rolling bearing, and then the column body of the magnetic column contacts the inner wall of the polarization track slot, which can significantly reduce the noise during high-frequency oscillation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural diagram of the mixing and oscillating device of the present utility model.

[0019] Figure 2 It is a cross-sectional view of the mixing and oscillating device of the present invention.

[0020] Figure 3 It is a structural diagram of the base unit.

[0021] Figure 4 is a top view of the base unit.

[0022] Figure 5 is a cross-sectional view of the base unit.

[0023] Figure 6 It is a structural diagram of the oscillation platform.

[0024] Figure 7 This is a schematic diagram of the back side of the oscillation platform.

[0025] Figure 8 is a cross-sectional view of the oscillating platform.

[0026] Figure 9 It is a schematic diagram of the back structure of the oscillation platform.

[0027] Figure 10 It is a bottom view of the oscillating platform.

[0028] Figure 11 It is a structural diagram of the electromagnetic magnet assembly.

[0029] Figure 12 It is a structural diagram of the balancing block.

[0030] The numbers and letters in the figure represent the names of the corresponding parts:

[0031] 10 - oscillation platform; 11 - ball bearing surface; 111 - upper wear-resistant ceramic plate; 12 - magnetic column; 121 - connector; 122 - rolling bearing; 123 - copper column; 124 - upper magnet;

[0032] 20 - Adaptive orifice plate clamping mechanism; 21 - Rotating disk; 22 - First angle code linkage mechanism; 221 - First angle code; 222 - First regulating rod; 223 - Second regulating rod; 224 - First slide; 225 - First slide rail; 226 - First connecting rod; 23 - Second angle code linkage mechanism; 231 - Second angle code; 232 - Third regulating rod; 233 - Fourth regulating rod; 234 - Second slide; 235 - Second slide rail; 236 - second connecting rod; 24 - opening and closing drive mechanism; 241 - third connecting rod; 242 - pull magnet; 2421 - push shaft; 2422 - rotating sleeve; 243 - fixed magnetic seat; 244 - third slide; 245 - third slide rail; 246 - handle; 247 - tension spring; 248 - handle sliding opening; 249 - shielding plate; 25 - pushing mechanism; 251 - servo; 252 - swing arm;

[0033] 30-base unit; 31-polarization drive mechanism; 311-motor; 312-eccentric shaft; 313-balancing block; 3131-sector-shaped portion; 3132-annular portion; 3133-positioning opening; 3134-arc-shaped guide surface; 3135-sector-shaped counterweight; 32-ball receiving hole; 321-ball; 322-first elastic ring; 323-lower wear-resistant ceramic plate; 33-polarization track slot; 331-lower magnet; 332-second elastic ring; 34-electromagnetic magnet assembly; 341-base; 342-electromagnetic magnet body; 343-positioning ejector pin; 344-limiting block; 345-sleeve; 346-retaining ring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figure 1-8 As shown in FIG. 1 , the magnetic column structure of the oscillating platform includes:

[0036] The oscillating platform 10 has an upper surface for placing the sample well plate. The bottom surface of the oscillating platform 10 is provided with three ball bearing surfaces 11 distributed along a circumferential array. The bottom surface of the oscillating platform 10 is also provided with at least three magnetic columns 12 extending vertically downward. The magnetic columns 12 are provided with rolling bearings 122. The bottom of the magnetic columns 12 is installed with an upper magnet 124.

[0037] The base unit 30 includes a lower base body; the upper surface of the lower base body is provided with three concave ball receiving holes 32, and the ball receiving holes 32 are provided with balls 321, and the top of the ball 321 contacts the ball support surface 11 of the oscillation platform; the upper surface of the lower base body is also provided with at least three concave polarization track slots 33, and the bottom of the polarization track slot 33 is provided with a lower magnet 331, the magnetic column 12 extends downward into the polarization track slot 33, the upper magnet 124 and the lower magnet 331 attract each other, and the bottom surface of the magnetic column 12 is in a non-contact state with the bottom surface of the polarization track slot 33, and the inner wall of the polarization track slot 33 is provided with a second elastic ring 332, and the height position of the second elastic ring 332 matches the rolling bearing 122 on the magnetic column.

[0038] The beneficial effects of adopting the above technical solution are: the oscillation platform is supported by three balls of the same height, and the three points form a stable support surface. Under the action of non-contact magnetic attraction, the oscillation platform can still remain in the same plane during high-frequency oscillation, thereby improving the smoothness of operation; during oscillation, the column body of the magnetic column is first buffered by the contact between the elastic ring and the rolling bearing. After the elastic ring is compressed to a certain extent, the column body of the magnetic column contacts the inner wall of the polarization track slot, which can significantly reduce the noise during high-frequency oscillation.

[0039] In other embodiments of the present invention, a first elastic ring 322 is provided in the middle of the inner wall of the ball receiving hole 32. The height of the first elastic ring 322 matches the height of the center of the ball 321. The above technical solution has the beneficial effect of reducing the contact noise between the ball and the wall of the ball receiving hole 32.

[0040] In other embodiments of the present invention, the ball bearing surface 11 is provided with an upper wear-resistant ceramic sheet 111. The bottom surface of the ball receiving hole 32 is provided with a lower wear-resistant ceramic sheet 323. The balls 321 are nylon balls. The above technical solution has the beneficial effect of increasing the service life of the balls and their supporting structure.

[0041] In other embodiments of the present invention, the magnetic column 12 includes a connecting member 121, a rolling bearing 122, a copper column 123 and an upper magnet 124. The connecting member 121 is fixedly connected to the bottom surface of the oscillation platform 10, the rolling bearing 122 is sleeved in the middle of the connecting member 121, the copper column 123 is fixedly connected to the bottom end of the connecting member 121, and the upper magnet 124 is embedded in the bottom end of the copper column 123.

[0042] In other embodiments of the present invention, the rolling bearing 122 and the copper pillar 123 are coaxially arranged. The outer diameter of the copper pillar 123 is larger than that of the rolling bearing 122. The difference between the outer diameters of the copper pillar 123 and the outer diameters of the rolling bearing 122 is denoted by a. The protrusion of the inner ring of the second elastic ring 332 from the inner wall of the polarization track slot 33 in the free state is denoted by b. Here, b > a / 2 + 0.5 mm, and 0.1 mm ≤ a ≤ 1 mm. This advantageous effect of employing the above-described technical solution is that it balances the elastic ring's shock-absorbing and buffering effect on the operation of the magnetic pillar with the rigid support provided by the copper pillar and the inner wall of the polarization track slot, ensuring stable operation of the oscillator and extending its service life.

[0043] like Figure 1-12 As shown, the mixing oscillation device includes an oscillation platform 10 and a base unit 20. A polarization drive mechanism 31 is provided in the middle of the lower body of the base unit 20. The magnetic column structure of the oscillation platform mentioned above is adopted between the oscillation platform 10 and the base unit 20.

[0044] In other embodiments of the present invention, the polarization drive mechanism 31 includes a motor 311, an eccentric shaft 312, and a balancing weight 313. The lower end of the eccentric shaft 312 is connected to the output shaft of the motor 311, and the balancing weight 313 is connected to the eccentric shaft 312. The top and bottom ends of the eccentric shaft 312 are eccentrically arranged. The top end of the eccentric shaft 312 is docked and mounted with the middle hole of the bottom surface of the oscillation platform 10 via a bearing. The eccentric shaft 312 has vertical freedom of movement between the middle hole of the bottom surface of the oscillation platform 10. The beneficial effect of adopting the above technical solution is that the balancing weight offsets the centrifugal force of the oscillation platform, ensuring the operational stability of the oscillation device.

[0045] In other embodiments of the present invention, an electromagnetic magnet assembly 34 is provided within the lower body of the base unit 30. The electromagnetic magnet assembly 34 drives the positioning push rod 343 to telescopically move. The balancing block 313 includes a fan-shaped portion 3131 and an annular portion 3132 connected to the fan-shaped portion. A concave positioning opening 3133 is provided on the side of the annular portion 3132. After the positioning push rod 343 is extended, it engages with the positioning opening 3133. The beneficial effect of adopting the above technical solution is that before the oscillation platform stops, the position of the polarization axis balancing block is limited by the electromagnetic magnet assembly, which can achieve the oscillation platform stopping at the same position, facilitating the mechanical gripper in the automated experimental platform to accurately grasp the orifice plate on the oscillation platform.

[0046] In other embodiments of the present invention, arc-shaped guide surfaces 3134 are provided on both sides of the opening of the positioning opening 3133. The beneficial effect of adopting the above technical solution is to improve the smoothness of the positioning push rod of the electromagnetic magnet assembly entering the positioning opening.

[0047] In some other embodiments of the present invention, a sector-shaped counterweight plate 3135 is detachably connected to the top of the sector-shaped portion 3131 of the balancing weight. The beneficial effect of adopting the above technical solution is that it is convenient to adjust the counterweight of the balancing weight.

[0048] In other embodiments of the present invention, the electromagnetic magnet assembly 34 includes a base 341, an electromagnetic magnet body 342, a positioning pin 343, a limit block 344, a sleeve 345, a snap ring 346, and a return spring. The base 341 is fixedly connected to the lower base of the base unit 30, the electromagnetic magnet body 342 and the limit block 344 are both fixedly connected to the base 341, the positioning pin 343 passes through the electromagnetic magnet body 342 and the limit block 344, the sleeve 345 is sleeved on the front end of the positioning pin 343, the sleeve 345 is located on the front side of the limit block 344, the snap ring 346 is clamped on the tail end of the positioning pin 343, and the return spring is located between the snap ring 346 and the rear end face of the electromagnetic magnet body 342. The beneficial effects of adopting the above technical solution are: improving the structural stability of the electromagnetic magnet assembly and improving the response speed to the positioning of the balance block.

[0049] In other embodiments of the present invention, the oscillating platform 10 is further provided with an adaptive orifice plate clamping mechanism 20 for clamping the orifice plate. The adaptive orifice plate clamping mechanism 20 includes a turntable 21, a first angle code linkage mechanism 22, a second angle code linkage mechanism 23, and an opening and closing drive mechanism 24.

[0050] The turntable 21 is rotatably mounted in the middle of the bottom surface of the oscillating platform 10;

[0051] The first angle code linkage mechanism 22 includes a first angle code 221, a first slide rail assembly and a first connecting rod 226. The upper surface of the first angle code 221 is provided with a first regulating rod 222 and a second regulating rod 223 vertically arranged. The first regulating rod 222 and the second regulating rod 223 are used to regulate the first long side and the first short side of the orifice plate, respectively. The first slide rail assembly includes a first slide 224 and a first slide rail 225. The first slide rail 225 is fixedly connected to the bottom surface of the oscillating platform 10. The first slide rail 225 is set at 45 degrees to the edge line of the oscillating platform. The bottom of the first angle code 221 is fixedly connected to the first slide 224. One end of the first connecting rod 226 is hinged to the first slide 224, and the other end of the first connecting rod 226 is hinged to the turntable 21.

[0052] The second angle code linkage mechanism 23 includes a second angle code 231, a second slide rail assembly and a second connecting rod 236. The upper surface of the second angle code 231 is provided with a third regulating rod 232 and a fourth regulating rod 233 vertically arranged. The third regulating rod 232 and the fourth regulating rod 233 are used to regulate the second long side and the second short side of the orifice plate, respectively. The second slide rail assembly includes a second slide 234 and a second slide rail 235. The second slide rail 235 is fixedly connected to the bottom surface of the oscillating platform 10. The second slide rail 235 is set at 45 degrees to the edge line of the oscillating platform. The bottom of the second angle code 231 is fixedly connected to the second slide 234. One end of the second connecting rod 236 is hinged to the second slide 234, and the other end of the second connecting rod 236 is hinged to the turntable 21.

[0053] The opening and closing drive mechanism 24 includes a third connecting rod 241, a pulling magnetic block 242, a fixed magnetic seat 234, a third slide rail assembly, a handle 246 and a tension spring 247. The third slide rail assembly includes a third slide 244 and a third slide rail 245. The third slide rail 245 is fixedly installed on the bottom surface of the oscillation platform 10. The third slide rail 245 is arranged parallel to the short side line of the oscillation platform 10. The fixed magnetic seat 234 is fixedly connected to the bottom surface of the oscillation platform 10. Magnets are provided in the fixed magnetic seat 234 and the pulling magnetic block 242. One end of the third connecting rod 241 is hinged to the turntable 21, and the other end of the third connecting rod 241 is connected to one end of the pulling magnetic block 242. The other end of the pulling magnetic block 242 is hinged to the third slide 244. The handle 246 is fixedly connected to the third slide 244, and the tension spring 247 is connected between the third slide 244 and the oscillation platform 10. The beneficial effect of adopting the above technical solution is: the orifice plate is clamped by using the openable and closable first and second angle codes. Compared with the fixed clamping method, the clamping force is stable, which can eliminate the influence of manufacturing errors of different orifice plate sizes on the clamping force, and facilitate the removal and placement of the orifice plate.

[0054] In other embodiments of the present invention, a protruding push shaft 2421 is provided on the pulling magnetic block 242, and a pushing mechanism 25 is provided in the base unit. The pushing mechanism 25 is used to apply a driving force to the pushing shaft 2421 to urge the pulling magnetic block 242 to move away from the fixed magnetic seat 234. A rotatable sleeve 2422 is provided on the outer periphery of the pushing shaft 2421. The pushing mechanism 25 includes a servo 251 and a swing arm 252. The servo 251 is fixedly installed in the base unit 30, and the swing arm 252 is installed on the rotating shaft of the servo 251. The swing arm 252 is swung to push the pulling magnetic block 242, thereby realizing the opening of the first angle code 221 and the second angle code 231. The beneficial effect of adopting the above technical solution is that the automatic opening and closing of the orifice plate clamping mechanism can be realized by the servo, and it can be organically integrated into the automated experimental platform.

[0055] In other embodiments of the present invention, the engaging surfaces of the fixed magnetic seat 243 and the pulling magnetic block 242 are perpendicular to the length direction of the third slide rail 245. The beneficial effect of adopting the above technical solution is to improve the attraction force and ensure a stable clamping force on the orifice plate.

[0056] In other embodiments of the present invention, a handle sliding opening 248 is provided on one side of the oscillating platform 10 for extending the handle 246. A shielding plate 249 is connected to the third slide 244. The shielding plate 249 is used to block the handle sliding opening 248 when the tension spring 247 drives the handle to return to its original position. The beneficial effect of adopting this technical solution is to prevent the hand from being pinched during operation and improve safety performance.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable ordinary technicians in this field to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. The magnetic column structure of the oscillating platform is characterized by: include: An oscillating platform, the upper surface of which is used to place the sample well plate, the bottom surface of the oscillating platform is provided with three ball bearing surfaces distributed along the circumference of the array, the bottom surface of the oscillating platform is also provided with at least three magnetic columns extending vertically downward, the magnetic columns are provided with rolling bearings, and the bottom of the magnetic columns is installed with an upper magnet; The base unit includes a lower base body, the upper surface of which is provided with three concave ball-receiving holes, the ball-receiving holes being provided with balls, and the tops of the balls being in contact with the ball-supporting surface of the oscillating platform; the upper surface of the lower base body is also provided with at least three concave polarization track slots, the bottoms of the polarization track slots are provided with lower magnets, the magnetic column extends downward into the polarization track slots, the upper magnet and the lower magnet attract each other, the bottom surface of the magnetic column is in a non-contact state with the bottom surface of the polarization track slot, and the inner wall of the polarization track slot is provided with a second elastic ring, the height position of the second elastic ring matches the rolling bearing on the magnetic column.

2. The magnetic column structure of the oscillating platform according to claim 1, characterized in that: The magnetic column includes a connecting piece, a rolling bearing, a copper column and an upper magnet. The connecting piece is fixedly connected to the bottom surface of the oscillation platform, the rolling bearing is sleeved in the middle of the connecting piece, the copper column is fixedly connected to the bottom end of the connecting piece, and the upper magnet is embedded in the bottom end of the copper column.

3. The magnetic column structure of the oscillating platform according to claim 2, characterized in that: The rolling bearing is coaxially arranged with the copper column, the outer diameter of the copper column is larger than the outer diameter of the rolling bearing, the difference between the outer diameter of the copper column and the outer diameter of the rolling bearing is a; the protrusion of the inner ring of the second elastic ring in a free state from the inner wall of the polarization track slot is b, then b>a / 2+0.5mm.

4. The magnetic column structure of the oscillating platform according to claim 3, characterized in that: 0.1mm≤a≤1mm.

5. The magnetic column structure of the oscillating platform according to claim 1, characterized in that: The ball bearing surface is provided with an upper wear-resistant ceramic sheet.

6. The magnetic column structure of the oscillating platform according to claim 5, characterized in that: The bottom surface of the ball accommodating hole is provided with a lower wear-resistant ceramic sheet.

7. The magnetic column structure of the oscillating platform according to claim 1, characterized in that: The balls are nylon balls.

8. The magnetic column structure of the oscillating platform according to claim 1, characterized in that: A first elastic ring is provided in the middle of the inner wall of the ball accommodating hole, and the height position of the first elastic ring matches the height of the center of the ball.

9. Mixing and oscillating device, characterized in that: It comprises an oscillating platform and a base unit, wherein the magnetic column structure of the oscillating platform as claimed in any one of claims 1 to 8 is adopted between the oscillating platform and the base unit.

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