A centrifuge rotor axial displacement detection device

Abstract

The present invention relates to the field of centrifuge rotor detection technology. The present invention discloses a centrifuge rotor axial displacement detection device, including a base, a second piston slidably connected in the oil storage pipe, one side of the second piston is connected to a moving block through a second connecting rod, an automatic marking mechanism is fixed on the other side of the upper end surface of the base, and the moving block passes through one side of the automatic marking mechanism. The centrifuge rotor axial displacement detection device clamps and fixes the centrifuge rotor, and then the handle can be reversed, the gear block can lock the rotating ring, and the clamping block can be locked, so that the clamping effect is more secure. When the centrifuge rotor undergoes axial displacement, the jacket, the rotating block, the support block, the first connecting rod and the first piston move left and right, and the second piston, the second connecting rod and the moving block move left and right, thereby pulling the left movable block to move left or pushing the right movable block to move right. The degree of axial displacement of the centrifuge rotor can be understood by measuring the distance between the final positions of the two movable blocks.

Description

Technical Field

[0001] The invention relates to the technical field of centrifuge rotor detection, in particular to a centrifuge rotor axial displacement detection device. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate liquids from solid particles or components in a mixture of liquids and liquids. Centrifuges are mainly used to separate solid particles from liquids in suspensions, or to separate two immiscible liquids of different densities in emulsions (e.g., separating cream from milk); they can also be used to remove liquids from wet solids, such as using a washing machine to spin dry wet clothes; special ultra-fast tubular separators can also separate gas mixtures of different densities; some sedimentation centrifuges can also classify solid particles by density or particle size by taking advantage of the different sedimentation speeds of solid particles of different densities or particle sizes in liquids. Centrifuges, as important separation equipment, have important applications in fields including chemical, petroleum, food, and pharmaceuticals. In the production process of centrifuges, after the rotor is assembled, the axial displacement of the rotor needs to be detected, so a detection device is needed. If the axial displacement of the rotor is too large, it means that the assembly is unqualified.

[0003] The existing detection device generally needs to clamp and fix the rotor before detecting the axial displacement of the rotor. The rotor will subsequently rotate at high speed. If the clamping is not firm, it is easy to loosen, thereby affecting the detection operation. In the process of detecting the axial displacement of the rotor, it is difficult to accurately understand the displacement degree of the rotor by naked eyes, thereby increasing the difficulty of repair. If a displacement recording component is set, the recording component needs to be reset after each rotor displacement detection operation is completed. The reset operation is not fast and convenient enough. In view of the above problems, the existing equipment needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a centrifuge rotor axial displacement detection device to solve the problem that the existing detection device proposed in the above background technology generally needs to clamp and fix the rotor before detecting the axial displacement of the rotor. The rotor will rotate at a high speed later. If the clamping is not firm, it is easy to get loose, thereby affecting the detection operation. In the process of detecting the axial displacement of the rotor, it is difficult to accurately understand the displacement degree of the rotor by naked eyes, thereby increasing the difficulty of repair. If a displacement recording component is set, the recording component needs to be reset after each displacement detection operation of the rotor is completed, and the reset operation is not fast and convenient enough.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a centrifuge rotor axial displacement detection device, comprising a base, a cylinder is fixed to one side of the upper end surface of the base, a first piston is slidably connected in the cylinder, one side of the first piston is connected to a support block through a first connecting rod, and one side of the support block is rotatably connected to a clamping mechanism.

[0006] An oil storage pipe is fixed on one side of the oil cylinder, a second piston is slidably connected in the oil storage pipe, one side of the second piston is connected to the moving block through a second connecting rod, an automatic marking mechanism is fixed on the other side of the upper end surface of the base, and the moving block passes through one side of the automatic marking mechanism.

[0007] Preferably, the clamping mechanism comprises a jacket, and a rotating block is fixed to one side of the jacket, and the rotating block is rotatably connected to one side of the supporting block.

[0008] By adopting the above technical solution, after the centrifuge rotor is clamped and fixed in the jacket, the jacket will rotate together with the centrifuge rotor.

[0009] Preferably, the outer side of the sleeve is rotatably connected to a swivel, and a gear ring is fixed on the inner side of the swivel, the top of the swivel is rotatably connected to a limit claw, and the limit claw is fixed to the outer side of the handle, the top of the swivel is rotatably connected to a first screw rod, and the first screw rod is threadedly connected to the bottom of the handle, a limit block is fixed to the bottom of the first screw rod, a sliding groove is opened in the top of the swivel, the limit block is slidably connected in the sliding groove, and a gear block is fixed to the bottom of the limit block.

[0010] By adopting the above technical solution, the swivel needs to be unlocked before rotating the swivel, and then the swivel can be rotated by holding the handle.

[0011] Preferably, a first groove is formed on the top of the jacket, a rack is fixed in the first groove, and the tooth block is meshingly connected to the rack.

[0012] By adopting the above technical solution, the rotating ring can be unlocked after the tooth block moves up and leaves the rack.

[0013] Preferably, one side of the sleeve is rotatably connected to a second screw rod, and one end of the second screw rod is fixed with a gear, the gear is meshingly connected to the ring gear, the outer side of the second screw rod is threadedly connected to an extrusion block, a second groove is provided on the inner wall of the sleeve, and a first compression spring is fixed in the second groove, a clamping block is fixed to the outer end of the first compression spring, the extrusion block and the clamping block are both slidably connected in the second groove, and the clamping block and the extrusion block are wedge-fitted.

[0014] By adopting the above technical solution, when the rotating ring rotates, all the gears rotate, all the second screws rotate, all the extrusion blocks move left, and all the clamping blocks approach each other, so as to conveniently clamp and fix the centrifuge rotor.

[0015] Preferably, the automatic marking mechanism includes a support table, and the support table is fixed on the other side of the upper end surface of the base, a limiting rod is fixed in the support table, and an axial self-locking mechanism is slidably connected in the support table, the axial self-locking mechanism includes two sliders, the limiting rod passes through the two sliders, and the bottom of the two sliders are connected to the locking block through a second compression spring.

[0016] By adopting the above technical solution, when the slider moves, the locking block can automatically lock the slider to prevent the slider from moving backward.

[0017] Preferably, one of the sliders is connected to an inner wall of the support platform via a third compression spring, and the other slider is connected to another inner wall of the support platform via a third compression spring, and the third compression spring is wrapped around the outer side of the limiting rod.

[0018] By adopting the above technical solution, after the slider is unlocked, the slider will automatically reset under the action of the third compression spring.

[0019] Preferably, a movable block is fixed on the top of each of the two sliding blocks, the second connecting rod passes through one of the movable blocks, and the movable block is located between the two movable blocks.

[0020] By adopting the above technical solution, when the moving block moves to the left, it will pull the movable block on the left to move to the left, and when the moving block moves to the right, it will push the movable block on the right to move to the right.

[0021] Preferably, a fourth compression spring is fixed to the inner bottom of the support platform, and a support plate is fixed to the top of the fourth compression spring, the support plate is slidably connected in the support platform, and a card slot is provided on the upper end surface of the support plate, the card slots are evenly spaced on the support plate, the locking block is snap-connected in one of the card slots, a pull ring is fixed to the bottom of the support plate, and the pull ring passes through the bottom of the support platform.

[0022] By adopting the above technical solution, the slider can be unlocked after holding the pull ring and pulling down the support plate to make the locking block leave the slot.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The centrifuge rotor axial displacement detection device can achieve the purpose of firm clamping and axial displacement detection through the coordinated use of the first piston, the first connecting rod, the support block, the jacket, the rotating block, the rotating ring, the handle, the first screw rod, the limit block, the tooth block, the gear, the second screw rod, the extrusion block, the clamping block, the second piston, the second connecting rod, the moving block and the movable block. After the centrifuge rotor is inserted into the jacket, the handle can be rotated independently, the first screw rod, the limit block and the tooth block are moved up to unlock the rotating ring, and then the handle is held to rotate the rotating ring, and the gear and the second screw rod rotate. The extrusion block moves to the left, and all the clamping blocks are squeezed close to each other, which is convenient for clamping and fixing the centrifuge rotor. The handle can then be reversed, the tooth block can lock the swivel, and the clamping block can be locked, making the clamping effect more secure. When the centrifuge rotor undergoes axial displacement, the jacket, the rotating block, the supporting block, the first connecting rod and the first piston move left and right, and the second piston, the second connecting rod and the moving block move left and right, thereby pulling the left movable block to move left or pushing the right movable block to move right. The degree of axial displacement of the centrifuge rotor can be understood by measuring the distance between the final positions of the two movable blocks.

[0025] 2. The centrifuge rotor axial displacement detection device can achieve the purpose of self-locking through the coordinated use of the slider, lock block, movable block and slot. When the movable block moves, the corresponding slider moves, and the lock block will automatically snap into the corresponding slot. The slider on the left can only move left, and the slider on the right can only move right, which is convenient for achieving the self-locking effect and can effectively prevent the slider and the movable block from moving backward.

[0026] 3. The centrifuge rotor axial displacement detection device can achieve the purpose of rapid unlocking and resetting through the coordinated use of the slider, lock block, support plate, slot and pull ring. The slider can be unlocked by holding the pull ring, pulling down the support plate and making the lock block leave the slot, and the slider will automatically rebound and reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0030] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0031] Figure 5 It is a schematic diagram of the connection structure of the jacket, the rotating block, the first groove, the rack and the gear of the present invention;

[0032] Figure 6It is a schematic diagram of the connection structure of the handle, the limiting claw, the first screw rod and the gear block of the present invention;

[0033] Figure 7 It is a schematic diagram of the connection structure of the first screw rod, the limit block and the tooth block of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the automatic marking mechanism of the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the axial self-locking mechanism of the present invention.

[0036] In the figure: 1, base; 2, oil cylinder; 3, first piston; 4, first connecting rod; 5, support block; 6, clamping mechanism; 601, jacket; 602, rotating block; 603, rotating ring; 604, gear ring; 605, handle; 606, limit claw; 607, first screw rod; 608, limit block; 609, slide groove; 610, gear block; 611, first groove; 612, rack; 613, gear; 614, second screw rod; 615, extrusion block; 616, second groove; 617, first A compression spring; 618, a clamping block; 7, an oil storage pipe; 8, a second piston; 9, a second connecting rod; 10, a moving block; 11, an automatic marking mechanism; 1101, a support table; 1102, a limiting rod; 1103, an axial self-locking mechanism; 11031, a slider; 11032, a second compression spring; 11033, a locking block; 1104, a third compression spring; 1105, a movable block; 1106, a fourth compression spring; 1107, a support plate; 1108, a slot; 1109, a pull ring. DETAILED DESCRIPTION

[0037] 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 described embodiments 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 9 The present invention provides a technical solution: a centrifuge rotor axial displacement detection device, comprising a base 1, a cylinder 2 is fixed to one side of the upper end surface of the base 1, a first piston 3 is slidably connected in the cylinder 2, one side of the first piston 3 is connected to a support block 5 through a first connecting rod 4, and one side of the support block 5 is rotatably connected to a clamping mechanism 6.

[0039] An oil storage pipe 7 is fixed to one side of the oil cylinder 2, and a second piston 8 is slidably connected inside the oil storage pipe 7. One side of the second piston 8 is connected to the moving block 10 through a second connecting rod 9. An automatic marking mechanism 11 is fixed to the other side of the upper end surface of the base 1, and the moving block 10 passes through one side of the automatic marking mechanism 11.

[0040] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the clamping mechanism 6 includes a jacket 601, and a rotating block 602 is fixed on one side of the jacket 601. The rotating block 602 is rotatably connected to one side of the support block 5. After the centrifuge rotor is clamped and fixed by the jacket 601, the jacket 601 and the rotating block 602 can rotate together with the centrifuge rotor, and the support block 5 plays a role of supporting and limiting the rotating block 602.

[0041] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the outer side of the jacket 601 is rotatably connected to a swivel 603, and a gear ring 604 is fixed on the inner side of the swivel 603. The top of the swivel 603 is rotatably connected to a limit claw 606, and the limit claw 606 is fixed on the outer side of the handle 605. The top of the swivel 603 is rotatably connected to a first screw rod 607, and the first screw rod 607 is threadedly connected to the bottom of the handle 605. A limit block 608 is fixed to the bottom of the first screw rod 607. A slide groove 609 is provided in the top of the swivel 603. The limit block 608 is slidably connected in the slide groove 609, and a tooth block 610 is fixed at the bottom of the limit block 608. Before holding the handle 605 to rotate the swivel 603, the handle 605 needs to be rotated separately. The limit block 608 is limited by the first screw rod 607 and the slide groove 609. When the handle 605 is rotated, the limit block 608 slides upward, thereby driving the tooth block 610 to move upward, which is convenient for unlocking the swivel 603. The limit claw 606 can rotate with the handle 605 to conveniently play a limiting role.

[0042] In this embodiment, Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a first groove 611 is provided at the top of the jacket 601, and a rack 612 is fixed in the first groove 611, and a tooth block 610 is meshed and connected to the rack 612. The tooth block 610 is initially meshed and connected to the rack 612, and the swivel 603 is in a locked state. Before rotating the swivel 603, the tooth block 610 needs to move up and leave the rack 612 to unlock the swivel 603. After rotating the swivel 603, the tooth block 610 moves down again and meshes and connects to the corresponding rack 612 to facilitate locking of the swivel 603.

[0043] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, one side of the jacket 601 is rotatably connected to a second screw rod 614, and one end of the second screw rod 614 is fixed with a gear 613, the gear 613 is meshed and connected to the gear ring 604, the outer side of the second screw rod 614 is threadedly connected to an extrusion block 615, a second groove 616 is provided on the inner wall of the jacket 601, and a first compression spring 617 is fixed in the second groove 616, a clamping block 618 is fixed at the outer end of the first compression spring 617, the extrusion block 615 and the clamping block 618 are both slidably connected in the second groove 616, and the clamping block 618 and the extrusion block 615 are slidably connected. The pressing block 615 is wedge-fitted, and after unlocking the rotating ring 603, the handle 605 can be held to rotate the rotating ring 603. Since the gear 613 is meshed and connected with the ring gear 604, the ring gear 604 rotates with the rotation of the rotating ring 603, thereby driving the second screw rod 614 to rotate. The squeezing block 615 is limited by the second screw rod 614 and the second groove 616 and moves to the left, thereby squeezing the clamping block 618 to move. The clamping blocks 618 are evenly distributed on the jacket 601 in the circumferential direction, and all the clamping blocks 618 are close to each other, which is convenient for clamping and fixing the centrifuge rotor.

[0044] In this embodiment, Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the automatic marking mechanism 11 includes a support platform 1101, and the support platform 1101 is fixed on the other side of the upper end surface of the base 1, a limiting rod 1102 is fixed in the support platform 1101, and an axial self-locking mechanism 1103 is slidably connected in the support platform 1101, and the axial self-locking mechanism 1103 includes two sliders 11031, the limiting rod 1102 passes through the two sliders 11031, and the bottoms of the two sliders 11031 are connected to the locking block 11033 through the second compression spring 11032, the limiting rod 1102 plays a supporting and limiting role in the sliding process of the slider 11031, when the slider 11031 slides outward, the locking block 11033 will automatically lock the slider 11031, so as to achieve the self-locking effect, the slider 11031 can only move outward but not inward, so as to effectively prevent the slider 11031 from moving backward.

[0045] In this embodiment, Figure 1 , Figure 2 and Figure 8 As shown, one of the sliders 11031 is connected to an inner wall of the support platform 1101 through a third compression spring 1104, and the other slider 11031 is connected to the other inner wall of the support platform 1101 through a third compression spring 1104. The third compression spring 1104 is wrapped around the outer side of the limiting rod 1102. The third compression spring 1104 supports the slider 11031, thereby facilitating the reset of the auxiliary slider 11031.

[0046] In this embodiment, Figure 1 , Figure 2 and Figure 8 As shown, movable blocks 1105 are fixed on the tops of the two sliders 11031, the second connecting rod 9 passes through one of the movable blocks 1105, and the movable block 10 is located between the two movable blocks 1105. When the centrifuge rotor undergoes axial displacement, the jacket 601, the rotating block 602, the first piston 3, the first connecting rod 4 and the supporting block 5 move left and right, and hydraulic oil is stored in the oil cylinder 2 and the oil storage pipe 7. The second piston 8 moves left and right under the action of the oil pressure, thereby driving the second connecting rod 9 and the movable block 10 to move left and right, thereby pulling the movable block 1105 on the left to move left or pushing the movable block 1105 on the right to move right, and the corresponding slider 11031 slides accordingly.

[0047] In this embodiment, Figure 1 , Figure 2 and Figure 8 As shown, a fourth compression spring 1106 is fixed to the inner bottom of the support platform 1101, and a support plate 1107 is fixed to the top of the fourth compression spring 1106. The support plate 1107 is slidably connected in the support platform 1101, and a card slot 1108 is provided on the upper end surface of the support plate 1107. The card slots 1108 are evenly spaced on the support plate 1107. The locking block 11033 is engaged and connected in one of the card slots 1108. A pull ring 1109 is fixed to the bottom of the support plate 1107, and the pull ring 1109 runs through the bottom of the support platform 1101. The fourth compression spring 1106 supports the support plate 1107. When the slider 11031 moves outward, the locking block 11033 will automatically bounce into the corresponding card slot 1108. The slider 11031 can be unlocked by holding the pull ring 1109 to pull the support plate 1107 downward and make the locking block 11033 leave the card slot 1108.

[0048] The use method and advantages of the present invention: The centrifuge rotor axial displacement detection device has the following working process:

[0049] like Figures 1 to 9As shown: first, insert the centrifuge rotor into the jacket 601, then rotate the handle 605, the first screw rod 607, the limit block 608 and the tooth block 610 move upward, and the tooth block 610 leaves the rack 612 to unlock the swivel 603, then hold the handle 605 and rotate the swivel 603, so as to drive all the gears 613 to rotate, all the second screw rods 614 rotate, and all the extrusion blocks 615 move to the left, so as to squeeze all the clamping blocks 618 to move, and all the clamping blocks 618 approach each other to clamp and fix the centrifuge rotor, then reverse the handle 605, the first screw rod 607, the limit block 608 and the tooth block 610 move downward, and the tooth block 610 is meshed and connected to the corresponding rack 612 to lock the swivel 603, when the centrifuge rotor is in operation and rotation, the jacket 601 and the rotating block 602 rotate, if the centrifuge rotor does not move, the two movable blocks 1105 do not move, if the centrifuge rotor moves axially , the jacket 601, the rotating block 602, the first piston 3, the first connecting rod 4 and the supporting block 5 move axially, the hydraulic oil is stored in the oil cylinder 2 and the oil storage pipe 7, and the second piston 8 moves left and right under the action of the oil pressure, thereby driving the second connecting rod 9 and the moving block 10 to move left and right, and the moving block 10 pulls the movable block 1105 on the left to move left or pushes the movable block 1105 on the right to move right, and the corresponding slider 11031 moves, and the locking block 11033 automatically bounces into the corresponding slot 1108. The slider 11031 on the left can only slide to the left, and the slider 11031 on the right can only slide to the right. The axial displacement degree of the centrifuge rotor can be understood by measuring the distance between the final positions of the two movable blocks 1105. After holding the pull ring 1109 to pull the supporting plate 1107 downward and make the locking block 11033 leave the slot 1108, the slider 11031 automatically rebounds under the action of the third compression spring 1104.

[0050] In summary, the centrifuge rotor axial displacement detection device achieves the purposes of clamping and fixing, axial displacement detection, self-locking and rapid unlocking and resetting, and meets people's usage needs.

[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifuge rotor axial displacement detection device, comprising a base (1), characterized in that: An oil cylinder (2) is fixed to one side of the upper end surface of the base (1), a first piston (3) is slidably connected inside the oil cylinder (2), one side of the first piston (3) is connected to a support block (5) via a first connecting rod (4), and one side of the support block (5) is rotatably connected to a clamping mechanism (6); An oil storage pipe (7) is fixed to one side of the oil cylinder (2), a second piston (8) is slidably connected in the oil storage pipe (7), one side of the second piston (8) is connected to a moving block (10) via a second connecting rod (9), an automatic marking mechanism (11) is fixed to the other side of the upper end surface of the base (1), the moving block (10) passes through one side of the automatic marking mechanism (11), the clamping mechanism (6) comprises a clamping sleeve (601), and a rotating block (602) is fixed to one side of the clamping sleeve (601), and the rotating block (602) is rotatably connected to the support block (5), the outer side of the jacket (601) is rotatably connected to a swivel (603), and the inner side of the swivel (603) is fixed with a gear ring (604), the top of the swivel (603) is rotatably connected to a limit claw (606), and the limit claw (606) is fixed to the outer side of the handle (605), the top of the swivel (603) is rotatably connected to a first screw rod (607), and the first screw rod (607) is threadedly connected to the bottom of the handle (605), and a limit block (608) is fixed to the bottom of the first screw rod (607), and the swivel (603) is connected to the inner side of the swivel (603). A slide groove (609) is provided in the top of the sleeve (603), the limit block (608) is slidably connected in the slide groove (609), and a tooth block (610) is fixed at the bottom of the limit block (608), a first groove (611) is provided in the top of the sleeve (601), and a rack (612) is fixed in the first groove (611), the tooth block (610) is meshedly connected to the rack (612), and a second screw rod (614) is rotatably connected to one side of the sleeve (601), and a gear (613) is fixed to one end of the second screw rod (614). The gear (613) is meshingly connected to the gear ring (604); the outer side of the second screw rod (614) is threadedly connected to an extrusion block (615); a second groove (616) is provided on the inner wall of the sleeve (601); a first compression spring (617) is fixed in the second groove (616); a clamping block (618) is fixed at the outer end of the first compression spring (617); the extrusion block (615) and the clamping block (618) are both slidably connected in the second groove (616); and the clamping block (618) and the extrusion block (615) are wedge-fitted.

2. A centrifuge rotor axial displacement detection device according to claim 1, characterized in that: The automatic marking mechanism (11) comprises a support platform (1101), and the support platform (1101) is fixed to the other side of the upper end surface of the base (1), a limit rod (1102) is fixed in the support platform (1101), and an axial self-locking mechanism (1103) is slidably connected in the support platform (1101), and the axial self-locking mechanism (1103) comprises two sliders (11031), the limit rod (1102) passes through the two sliders (11031), and the bottoms of the two sliders (11031) are connected to the locking block (11033) via a second compression spring (11032).

3. A centrifuge rotor axial displacement detection device according to claim 2, characterized in that: One of the sliders (11031) is connected to an inner wall of the support platform (1101) via a third compression spring (1104), and the other slider (11031) is connected to another inner wall of the support platform (1101) via a third compression spring (1104), and the third compression spring (1104) is wrapped around the outer side of the limiting rod (1102).

4. The centrifuge rotor axial displacement detection device according to claim 2, characterized in that: A movable block (1105) is fixed on the top of each of the two sliding blocks (11031); the second connecting rod (9) passes through one of the movable blocks (1105); and the moving block (10) is located between the two movable blocks (1105).

5. The centrifuge rotor axial displacement detection device according to claim 3, characterized in that: A fourth compression spring (1106) is fixed to the inner bottom of the support platform (1101), and a support plate (1107) is fixed to the top of the fourth compression spring (1106); the support plate (1107) is slidably connected in the support platform (1101), and a slot (1108) is provided on the upper end surface of the support plate (1107); the slots (1108) are evenly spaced on the support plate (1107); the locking block (11033) is snap-connected in one of the slots (1108); a pull ring (1109) is fixed to the bottom of the support plate (1107), and the pull ring (1109) passes through the bottom of the support platform (1101).

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