A table type ore powder centrifuge for engineering material detection

Abstract

The application discloses a table type ore powder centrifuge for engineering material detection, which comprises an outer shell, a controller, a centrifugal frame, a motor and a cover plate; the inner container is installed in the inner part of the outer shell, the controller is installed on the front face of the outer shell, the centrifugal frame is installed in the inner part of the inner container, the motor is installed at the bottom of the inner container, the output shaft of the motor is in transmission connection with the centrifugal frame, and the cover plate is installed at the top end of the outer shell. When the application is used, the pull ring is pulled upward and rotated by 90 degrees, at this time, the central rotating rod drives the protrusion to rotate, so that the protrusion is abutted against one end of the first sliding rod after rotation, thereby the first sliding rod is pushed outwards, so that the other end of the first sliding rod is abutted against the side of the centrifugal tube, thereby the centrifugal tube is locked in the centrifugal tube seat. Compared with the existing centrifuge, the application can stably fix the centrifugal tube in the centrifugal tube seat, avoids the mixing of the ore powder after centrifugation caused by the vibration of the centrifugal tube, thereby improving the centrifugal effect of the ore powder and improving the detection precision.

Description

Technical Field

[0001] This invention relates to the field of engineering testing technology, and specifically to a benchtop mineral powder centrifuge for testing engineering materials. Background Technology

[0002] This benchtop mineral powder large-capacity centrifuge (also called a mineral powder recovery instrument) is microcomputer controlled, with a digital display, brushless motor, touch panel, and multiple program protections. It is easy to operate, features automatic balancing, low noise, and is equipped with various rotors for user selection, offering high separation efficiency. It is suitable for experiments in biology, medicine, agriculture, and other fields, and is an ideal product for genetic engineering, protein, and nucleic acid laboratory experiments.

[0003] Existing benchtop centrifuges include two types: angle rotor and horizontal rotor. The angle between the centrifuge tube centerline and the rotation axis is different: When the horizontal rotor is stationary, the centrifuge tube centerline is parallel to the rotation axis. When the rotation accelerates, the centerline gradually transitions from a parallel position to a position close to perpendicular to the rotation axis. When the speed decreases, the centrifuge tube centerline gradually approaches a parallel position from a position close to perpendicular to the rotation axis. In the angle rotor, the centrifuge tube centerline forms a fixed angle of 20 to 40 degrees with the rotation axis. The larger the angle, the better the separation effect.

[0004] However, in the existing technology of angle rotor centrifuges, after the centrifuge tubes are placed on the centrifuge rack, there is a gap between the centrifuge tubes and the centrifuge rack, which cannot properly fix the centrifuge tubes. During centrifugation, when the centrifuge rack is about to stop after centrifugation, the centrifuge tubes will shake on the centrifuge rack due to inertia, resulting in uneven mixing of mineral powder in the centrifuge tubes. As a result, the separation boundary of the separated mineral powder is not clear, and the separation effect is poor.

[0005] Therefore, it is of great significance to provide a benchtop mineral powder centrifuge for testing engineering materials to solve the problems existing in the current technology. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a benchtop mineral powder centrifuge for testing engineering materials, so as to solve the problem that in the prior art, when the centrifuge tubes are placed on the centrifuge rack, there is a gap between the centrifuge tubes and the centrifuge rack, which cannot properly fix the centrifuge tubes. During centrifugation, the rotational kinetic energy of the centrifuge rack will cause the centrifuge tubes to vibrate on the centrifuge rack, resulting in unclear separation boundaries of the separated mineral powder and poor separation effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A benchtop mineral powder centrifuge for testing engineering materials includes an outer shell, a controller, a centrifuge rack, a motor, and a cover plate;

[0009] The inner liner is installed inside the outer shell, the controller is installed on the front of the outer shell, the centrifuge rack is installed inside the inner liner, the motor is installed at the bottom of the inner liner, the output shaft of the motor is connected to the centrifuge rack, and the cover plate is installed at the top of the outer shell.

[0010] The centrifuge rack includes a rotating column, a centrifuge tube holder, and a connecting rod. The connecting rod is mounted around the side of the rotating column. The centrifuge tube holder is fixedly connected to the connecting rod. A first sliding rod is slidably connected to the connecting rod. One end of the first sliding rod extends into the interior of the centrifuge tube holder. A cavity is formed inside the rotating column. The other end of the first sliding rod extends into the cavity. A first stop is fixedly connected to the middle of the first sliding rod. The first stop and the connecting rod are elastically connected by a first spring. A fixing block is fixedly connected to the middle of the cavity. A central rotating rod is rotatably connected to the fixing block. A protrusion is fixedly connected to the surface of the central rotating rod. The protrusion fits against the end face of the first sliding rod. A pull ring is fixedly connected to the top of the central rotating rod.

[0011] Preferably, a second stop is fixedly connected to the middle of the central rotating rod, and the second stop and the fixed block are elastically connected by a second spring.

[0012] Preferably, a square hole is provided at the bottom of the cavity, and the cross-section of the bottom of the central rotating rod is square, and the bottom of the central rotating rod engages with the square hole.

[0013] Preferably, a centrifuge tube is internally engaged with the centrifuge tube holder, and an inclined centrifuge groove is formed inside the centrifuge tube.

[0014] Preferably, the end of the first sliding rod extending into the centrifuge tube seat is recessed, and the longitudinal section of the protrusion is semi-circular.

[0015] Preferably, a sealing ring is provided on the inner side of the cover plate, and the sealing ring is in contact with the top of the inner liner.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention enables a more stable locking and fixing of centrifuge tubes and centrifuge racks. In use, the centrifuge tube is placed on the centrifuge tube holder, then the pull ring is pulled upwards and rotated 90°. At this time, the central rotating rod drives the protrusion to rotate, causing the protrusion to press against one end of the first sliding rod, thus pushing the first sliding rod outwards. The other end of the first sliding rod then presses against the side of the centrifuge tube, thereby locking the centrifuge tube in the centrifuge tube holder. Compared to existing centrifuges, this invention can stably fix the centrifuge tube in the centrifuge tube holder, preventing vibration of the centrifuge tube from causing mixing of the mineral powder after centrifugation, thereby improving the centrifugation effect of the mineral powder and increasing detection accuracy.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0019] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the centrifuge rack in this invention;

[0024] Figure 4 This is a top view of the centrifuge rack in this invention;

[0025] Figure 5 A schematic diagram of the centrifuge rack in Embodiment 2 of the present invention;

[0026] Figure 6 for Figure 5 Enlarged view of point A.

[0027] In the diagram: 1. Outer shell; 2. Controller; 3. Centrifuge rack; 4. Inner liner; 5. Cover plate; 6. Sealing ring; 7. Central rotating rod; 8. Rotating column; 9. Connecting rod; 10. Protrusion; 11. First stop block; 12. First spring; 13. Centrifuge tube seat; 14. Centrifuge tube; 15. First sliding rod; 16. Second spring; 17. Second stop block; 18. Fixing block; 19. Cavity; 20. Pull ring; 21. Top plate; 22. Sleeve; 23. Movable groove; 24. Connecting rod; 25. Slot; 26. Limiting rod; 27. Locking block; 28. Sliding ring; 29. ​​Third sliding rod; 30. Fixing tube; 31. Third spring; 32. Third stop block; 33. Fourth stop block; 34. Fourth sliding rod; 35. Lifting rod; 36. Locking groove; 37. Groove; 38. Motor; 39. Fourth spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0029] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0030] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0031] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0032] Example 1

[0033] Please see Figure 1-3 The present invention provides a technical solution for a benchtop mineral powder centrifuge for testing engineering materials: including an outer shell 1, a controller 2, a centrifuge rack 3, a motor 38, and a cover plate 5;

[0034] The inner liner 4 is installed inside the outer shell 1, the controller 2 is installed on the front of the outer shell 1, the centrifuge rack 3 is installed inside the inner liner 4, the motor 38 is installed at the bottom of the inner liner 4, the output shaft of the motor 38 is connected to the centrifuge rack 3, the cover plate 5 is installed at the top of the outer shell 1, and the controller 2 is electrically connected to the motor 38.

[0035] During the mineral powder centrifugation experiment, the speed of motor 38 is set by controller 2, and then motor 38 is turned on by controller 2. At this time, the output shaft of motor 38 drives centrifuge frame 3 to rotate, thereby completing the centrifugation of mineral powder.

[0036] The centrifuge rack 3 includes a rotating column 8, centrifuge tube holders 13, and connecting rods 9. There are eight connecting rods 9, arranged symmetrically in a cross pattern, one group at the top and one at the bottom. Two connecting rods 9 fix one centrifuge tube holder 13. There are four centrifuge tube holders 13. The connecting rods 9 are mounted around the sides of the rotating column 8. The centrifuge tube holders 13 are fixedly connected to the connecting rods 9. A first sliding rod 15 is slidably connected to the connecting rods 9. One end of the first sliding rod 15 extends into the interior of the centrifuge tube holder 13. A cavity 19 is formed inside the rotating column 8. The other end of the first sliding rod 15 extends into the cavity 19. A first stop 11 is fixedly connected to the middle of the first sliding rod 15. The first stop 11 is elastically connected to the connecting rod 9 by a first spring 12. The middle of the cavity 19 is fixedly connected to... A fixing block 18 is fixedly connected to the middle of the cavity 19. A central rotating rod 7 is rotatably connected to the fixing block 18. A protrusion 10 is fixedly connected to the surface of the central rotating rod 7. The protrusion 10 fits against the end face of the first sliding rod 15. A pull ring 20 is fixedly connected to the top of the central rotating rod 7. An inclined centrifugal groove is opened inside the centrifugal tube 14. A positioning strip groove is opened on the surface of the centrifugal tube 14. A retaining strip is set inside the centrifugal tube seat 13. The two are interlocked to ensure that after installation, the top of the centrifugal groove is close to the center of the centrifugal frame 3. When rotating, the mineral powder can be separated. The end of the first sliding rod 15 extending into the centrifugal tube seat 13 is set to be concave, which increases the contact area between the first sliding rod 15 and the centrifugal tube 14.

[0037] When in use, place the centrifuge tube 14 in the centrifuge tube holder 13 and engage the locking strip and the slotted groove. Then rotate the pull ring 20. When the pull ring 20 rotates, the protrusion 10 on the side of the central rotating rod 7 pushes the first sliding rod 15 outward, thereby forcing one end of the first sliding rod 15 to abut against the side of the centrifuge tube 14, thus firmly fixing the centrifuge tube 14 on the centrifuge tube holder 13. This prevents the centrifuge tube 13 from shaking when the centrifuge rack 3 is about to stop, making the mineral powder stratification inside the centrifuge tube 13 more obvious.

[0038] A second stop 17 is fixedly connected to the middle of the central rotating rod 7. The second stop 17 and the fixed block 18 are elastically connected by a second spring 16. The second spring 16 is located below the fixed frame 18. A square hole is opened at the bottom of the cavity 19. The cross-section of the bottom of the central rotating rod 7 is square. The bottom of the central rotating rod 7 is engaged with the square hole. The second spring 16 causes the central rotating rod 7 to generate downward pressure. When it is necessary to rotate the central rotating rod 7, the central rotating rod 7 needs to be lifted upward by the pull ring 20. At this time, the bottom of the central rotating rod 7 is disengaged from the square hole. After rotating 90°, the pull ring 20 is released again, and the central rotating rod 7 automatically descends and inserts into the square hole, thereby locking the central rotating rod 7.

[0039] Centrifuge tube 14 is internally engaged with centrifuge tube base 13. Centrifuge tube 14 has an inclined centrifuge groove inside. In this embodiment, when centrifuge tube 14 is installed on centrifuge tube base 13, centrifuge tube 14 is installed vertically, but the centrifuge groove inside centrifuge tube 14 is in an inclined state. An angle rotor centrifuge is tested, and the mineral powder is separated into layers under the action of centrifugal force during rotation.

[0040] A sealing ring 6 is provided on the inner side of the cover plate 5. The sealing ring 6 fits snugly against the top of the inner liner 4, resulting in better sealing and reduced noise.

[0041] Example 2

[0042] Unlike Embodiment 1, Embodiment 2 has a groove 37 at the bottom end of the centrifuge tube base 13. A sleeve 22 is fixedly connected to the bottom end of the centrifuge tube base 13. A lifting rod 35 is slidably connected inside the sleeve 22. A top plate 21 is fixedly connected to the top end of the lifting rod 35, and the top plate 21 is adapted to the groove 37. A fourth sliding rod 34 is fixedly connected to the bottom end of the lifting rod 35. A fourth stop 33 is fixedly connected to the bottom end of the fourth sliding rod 34. A fourth spring 39 is sleeved on the surface of the fourth sliding rod 34. There is a communication between the lifting rod 35 and the sleeve 22. The centrifuge tube base 13 is elastically connected to the bottom of the centrifuge tube base 13 via the fourth spring 39. The fixed tube 30 is slidably connected to the third sliding rod 29. The middle part of the third sliding rod 29 is fixedly connected to the third stop 32. The third stop 32 and the fixed tube 30 are elastically connected by the third spring 31. One end of the third sliding rod 29 extends into the inside of the sleeve 22. A locking groove 36 is provided on one side of the lifting rod 35. The locking groove 36 is engaged with the third sliding rod 29. The engaging end of the third sliding rod 29 and the locking groove 36 has a bevel.

[0043] After the centrifuge tube 14 is placed on the centrifuge tube holder 13, the centrifuge tube 14 presses the top plate 21 downward. During the descent of the top plate 21, the third spring 31 drives the third sliding rod 29 to generate an outward force, so that the end of the third sliding rod 29 inserts into the locking groove 36, the top plate 21 fits into the groove 37, and the bottom of the centrifuge tube holder 13 is a plane.

[0044] The bottom end of the first sliding rod 15 is fixedly connected to a connecting rod 24. The bottom end of the connecting rod 9 is provided with a movable groove 23. The connecting rod 24 is slidably connected to the movable groove 23. The bottom end of the connecting rod 24 is fixedly connected to a sliding ring 28. The third sliding rod 29 is slidably connected to the sliding ring 28. Multiple locking blocks 27 are movably connected inside the sliding ring 28. The surface of the third sliding rod 29 is provided with a locking groove 25. The locking groove 25 is engaged with the locking block 27. A limit rod 26 is provided on the side of the locking block 27.

[0045] After the mineral powder is centrifuged, the centrifuge tube 14 needs to be removed. At this time, pull the pull ring 20 upward, and then turn it to release the pull ring 20. During this process, the protrusion 10 rotates, causing the first sliding rod 15 to slide inward. The first sliding rod 15 no longer blocks the centrifuge tube 14. During the process of the first sliding rod 15 sliding inward, the slot 25 and the block 27 are engaged. At this time, the first sliding rod 15 drives the third sliding rod 29 to move inward through the connecting rod 24. At this time, the locking groove 36 at the end of the third sliding rod 29 causes the top plate 21 to be lifted upward under the action of the fourth spring 39, so that the centrifuge tube 14 is lifted upward a distance, making it easier to pick up the centrifuge tube 14. Since the engagement end of the third sliding rod 29 and the locking groove 36 has an inclined surface, when the third sliding rod 29 is passively retracted, the lifting rod 35 can rise slowly to avoid vibration.

[0046] In practical use, the centrifuge tube 14 containing mineral powder is placed in the centrifuge tube holder 13. The locking strip and the slot are engaged and positioned to ensure that the top of the centrifuge tube is close to the center of the centrifuge frame 3 after installation. The centrifuge tube 14 presses the top plate 21 downward. During the descent of the top plate 21, the third spring 31 drives the third sliding rod 29 to generate an outward force, causing the end of the third sliding rod 29 to insert into the locking groove 36. The top plate 21 fits into the groove 37. The bottom of the centrifuge tube holder 13 is a flat surface. To lock the centrifuge tube 14, when it is necessary to rotate the central rotating rod 7, first lift the central rotating rod 7 upwards using the pull ring 20. At this time, the bottom end of the central rotating rod 7 will disengage from the square hole. Then, after rotating 90°, release the pull ring 20 again. The central rotating rod 7 will automatically descend and insert into the square hole, thus locking the central rotating rod 7. After releasing the pull ring 20, the central rotating rod 7 automatically descends and inserts into the square hole, locking the central rotating rod 7. During this process, the slot 25 and the locking block 27 are not engaged. After the mineral powder centrifugation is completed, the centrifuge tube 14 needs to be removed. At this time, pull the pull ring 20 upwards, then turn and release the pull ring 20. During this process, the protrusion 10 rotates, causing the first sliding rod 15 to slide inwards. The first sliding rod 15 no longer abuts against the centrifuge tube 14. As the first sliding rod 15 slides inwards, the slot 25 and the locking block 27... When in the engaged state, the first sliding rod 15 drives the third sliding rod 29 to move inward through the connecting rod 24. At this time, the locking groove 36 at the end of the third sliding rod 29 causes the top plate 21 to be lifted upward under the action of the fourth spring 39, so that the centrifuge tube 14 is lifted upward a certain distance, making it easier to take out the centrifuge tube 14. Since the engaging end of the third sliding rod 29 and the locking groove 36 has an inclined surface, when the third sliding rod 29 is passively retracted, the lifting rod 35 can rise slowly to avoid vibration and make it easier to take out the centrifuge tube 14.

[0047] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any changes, modifications, substitutions, integrations, and parameter alterations to these embodiments within the spirit and principles of the present invention, achieved through conventional substitutions or by achieving the same function without departing from the principles and spirit of the present invention, fall within the scope of protection of the present invention.

Claims

1. A benchtop mineral powder centrifuge for testing engineering materials, characterized in that: It includes an outer shell (1), a controller (2), a centrifuge rack (3), an inner liner (4), a motor (38), and a cover plate (5); The inner liner (4) is installed inside the outer shell (1), the controller (2) is installed on the front of the outer shell (1), the centrifuge rack (3) is installed inside the inner liner (4), the motor (38) is installed at the bottom of the inner liner (4), the output shaft of the motor (38) is connected to the centrifuge rack (3) for transmission, and the cover plate (5) is installed at the top of the outer shell (1). The centrifuge rack (3) includes a rotating column (8), a centrifuge tube holder (13), and a connecting rod (9). The connecting rod (9) is mounted around the side of the rotating column (8). The centrifuge tube holder (13) is fixedly connected to the connecting rod (9). The connecting rod (9) is slidably connected to a first sliding rod (15). One end of the first sliding rod (15) extends into the interior of the centrifuge tube holder (13). A cavity (19) is provided inside the rotating column (8). The other end of the first sliding rod (15) extends into the cavity (19). The middle part of the first sliding rod (15) A first stop (11) is fixedly connected, and the first stop (11) and the connecting rod (9) are elastically connected by a first spring (12). A fixing block (18) is fixedly connected to the middle of the cavity (19). A fixing block (18) is fixedly connected to the middle of the cavity (19). A central rotating rod (7) is rotatably connected to the fixing block (18). A protrusion (10) is fixedly connected to the surface of the central rotating rod (7). The protrusion (10) is in contact with the end face of the first sliding rod (15). A pull ring (20) is fixedly connected to the top of the central rotating rod (7). The center rotating rod (7) is fixedly connected to a second stop (17), and the second stop (17) and the fixed block (18) are elastically connected by a second spring (16); The first sliding rod (15) extends into the centrifuge tube seat (13) at one end, which is set to be concave, and the longitudinal section of the protrusion (10) is semi-circular; A sealing ring (6) is provided on the inner side of the cover plate (5), and the sealing ring (6) is in contact with the top of the inner liner (4).

2. The benchtop mineral powder centrifuge for testing engineering materials as described in claim 1, characterized in that: The cavity (19) has a square hole at the bottom, and the cross-section of the bottom of the central rotating rod (7) is square. The bottom of the central rotating rod (7) engages with the square hole.

3. The benchtop mineral powder centrifuge for testing engineering materials as described in claim 1, characterized in that: The centrifuge tube holder (13) is internally connected to a centrifuge tube (14), and the centrifuge tube (14) has an inclined centrifuge groove inside.

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