PCR reaction tube sealing device

Abstract

The utility model relates to the technical field of PCR (Polymerase Chain Reaction) tubes, in particular to a PCR reaction tube sealing device which comprises an outer frame, a placing plate fixedly connected to the bottom end of the inner side of the outer frame of a reaction tube main body, an electric push rod fixedly connected to the top end of the inner side of the outer frame of the reaction tube main body, and a moving plate arranged on the inner side of the outer frame of the reaction tube main body, the reaction tube comprises a reaction tube main body outer frame, the inner side of the reaction tube main body outer frame is provided with a pressing plate, the top end of the reaction tube main body pressing plate is fixedly connected with a connecting block, and the top end of the reaction tube main body pressing plate is provided with a fixing hole. Further, a sealing cover fixed by a clamping groove formed in a rotating plate is driven to rotate by a certain radian and cover an opening in the top end of the reaction tube, so that the opening in the top end of the reaction tube is blocked, and the clogging tightness of the sealing cover to a reaction tube main body is further improved by matching with extrusion of an inserting rod.

Description

Technical Field

[0001] This utility model relates to the field of PCR tube technology, and in particular to a PCR reaction tube sealing device. Background Technology

[0002] A PCR reaction tube sealing device is a tool or device used to seal PCR reaction tubes to prevent contamination, evaporation, and cross-contamination. It includes types such as sealing films, caps, aluminum foil seals, and sealing machines. It must be sterile, heat-resistant, chemically inert, and have good sealing properties to ensure the accuracy and reproducibility of experimental results.

[0003] A search revealed that CN220618882U discloses a PCR reaction tube sealing device. This technology discloses "a PCR reaction tube sealing device, including a shell, a telescopic cylinder fixedly installed at the top inside the shell, a connecting block fixedly installed at the output end of the telescopic cylinder, a movable plate fixedly installed at the bottom of the connecting block, a driving component installed at the bottom of the movable plate, a movable frame installed at the bottom of the movable plate via the driving component, a support shaft fixedly installed inside the movable frame, a pressure roller rotatably installed on the surface of the support shaft, a pull-out component installed at the bottom inside the shell, a shelf installed at the bottom inside the shell via the pull-out component, a shelf groove opened inside the shelf, and a handle fixedly installed on the front side of the shelf. When this device seals PCR reaction tubes, it ensures that the pressure effect on the PCR reaction tubes around the shelf is consistent with the pressure effect on the center, so that all PCR reaction tubes can be completely sealed, improving the sealing quality."

[0004] Although the above-mentioned utility model solves the problem of PCR tube sealing to a certain extent, its application scope is relatively narrow. Under normal circumstances, the above-mentioned utility model can only be used to seal PCR tubes such as eight-tube arrays. For single tubes with their own caps, users need to manually flip the caps and attach them to the top opening of the reaction tube. In this case, the utility model may not be very useful or may not be effective.

[0005] To address the aforementioned issues, this application proposes a PCR reaction tube sealing device. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides a PCR reaction tube sealing device that can seal PCR tubes and, to a certain extent, prevent sealing failure.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a PCR reaction tube sealing device, comprising an outer frame, a placement plate fixedly connected to the bottom of the inner side of the outer frame, an electric push rod fixedly connected to the top of the inner side of the outer frame, a movable plate provided on the inner side of the outer frame, a pressure plate provided on the inner side of the outer frame, a connecting block fixedly connected to the top of the pressure plate, a fixing hole provided at the top of the pressure plate, a reaction tube body provided on the inner side of the placement plate, a cap fixedly connected to the reaction tube body, a placement hole provided at the top of the placement plate, the reaction tube body slidably connected to the placement hole, a fixing block fixedly connected to the top of the placement plate, a rotating plate provided between the fixing blocks, a slot provided at the top of the rotating plate, and an insertion hole provided on the rotating plate.

[0008] In a preferred embodiment of the PCR reaction tube sealing device of this utility model, one end of the electric push rod sleeve is fixedly connected to the top of the inner side of the outer frame, the slide of the electric push rod is slidably connected to the moving plate, and one end of the electric push rod slide is fixedly connected to the top of the pressure plate. By setting the electric push rod, it is convenient to move the pressure plate fixed to one end of the electric push rod slide by extending the electric push rod slide.

[0009] In a preferred embodiment of the PCR reaction tube sealing device of this utility model, the movable plate is located directly above the pressure plate, a motor is fixedly connected to the bottom end of the pressure plate, and a threaded rod is fixedly connected to the output shaft of the motor. The threaded rod is rotatably connected to the pressure plate. By setting the motor, it is convenient to drive the threaded rod fixed at one end of the motor output shaft to rotate through the rotation of the motor output shaft.

[0010] In a preferred embodiment of the PCR reaction tube sealing device of this utility model, the moving plate is helically connected to the threaded rod, the motor is located directly below the connecting block, and the other end of the threaded rod is rotatably connected to the top of the inner side of the connecting block. By setting the threaded rod, it is convenient to drive the moving plate helically connected to the threaded rod to move along the threaded rod through the rotation of the threaded rod.

[0011] As a preferred embodiment of the PCR reaction tube sealing device of this utility model, the bottom end of the moving plate is fixedly connected with a rod, the cross-section of the rod is consistent with the cross-section of the fixing hole, and the rod is slidably connected to the fixing hole. By setting the rod, it is convenient to drive the rod to squeeze the cap by sliding between the rod and the hole.

[0012] In a preferred embodiment of the PCR reaction tube sealing device of this utility model, the number of fixing blocks is two, a rotating motor is fixedly connected to one side of the fixing block, the output shaft of the rotating motor is rotatably connected to the fixing block, and one end of the output shaft of the rotating motor is fixedly connected to one side of the rotating plate. By setting the rotating motor, it is convenient to drive the rotating plate fixed to the output shaft of the rotating motor to rotate by rotating the output shaft of the rotating motor.

[0013] As a preferred embodiment of the PCR reaction tube sealing device of this utility model, the cap is slidably connected to the slot, and an insertion hole is provided at the bottom of the inner side of the slot. The cross-section of the insertion hole is consistent with the cross-section of the insertion rod. The insertion hole is slidably connected to the insertion rod. By setting the slot, it is convenient to store the cap through the slot and to a certain extent prevent the cap from falling off.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The PCR reaction tube sealing device designed in this utility model combines components such as a rotating plate, a pressure plate, and a placement plate through a design and coordination. By starting the rotating motor fixed by the fixed block, the rotating plate fixed by the output shaft of the rotating motor is rotated, which in turn causes the cap fixed by the slot on the rotating plate to rotate by a certain arc and cover the opening at the top of the reaction tube, thereby blocking the opening at the top of the reaction tube. The compression of the insertion rod further improves the tightness of the sealing of the reaction tube body by the cap.

[0016] 2. The PCR reaction tube sealing device designed in this utility model combines components such as a motor, a threaded rod, and a moving plate through a design and coordination. The operation of the motor drives the threaded rod fixed to the output shaft of the motor to rotate, which in turn drives the moving plate, which is spiraled with the threaded rod, and the insertion rod fixed on the moving plate to move downward and make the bottom end of the insertion rod contact the sealing cap. This performs secondary compression on the center part of the sealing cap and prevents the sealing cap from being incompletely fixed. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the movable plate of this utility model;

[0020] Figure 3 This is an exploded structural diagram of the rotating plate of this utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the pressure plate of this utility model.

[0022] In the picture:

[0023] 1. Outer frame; 2. Placement plate; 3. Moving plate; 4. Electric push rod; 5. Connecting block; 6. Motor; 7. Threaded rod; 8. Pressure plate; 9. Placement hole; 10. Reaction tube body; 11. Cap; 12. Fixing block; 13. Rotating motor; 14. Rotating plate; 15. Slot; 16. Insertion hole; 17. Insertion rod; 18. Fixing hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figure 1 As shown;

[0027] A PCR reaction tube sealing device includes an outer frame 1, a placement plate 2 welded to the bottom of the inner side of the outer frame 1, an electric push rod 4 fixed to the top of the inner side of the outer frame 1 by screws, and a movable plate 3 provided on the inner side of the outer frame 1.

[0028] In this implementation plan: In order to solve the problems existing in the prior art, such as the background art disclosed above, "Although the above utility model has solved the sealing problem of PCR tubes to a certain extent, the scope of application of the above utility model is relatively narrow. Under normal circumstances, the above utility model can only be used to seal PCR tubes of the type similar to eight-tube arrays. For single tubes with their own caps, users need to manually flip the caps and fasten them to the top opening of the reaction tube. In this case, the utility model may not be very useful or may not be able to play a role."

[0029] Therefore, in order to solve this technical problem, a pressure plate 8 and a rotating plate 14 have been added to this application.

[0030] Going further:

[0031] like Figures 1 to 4 As shown:

[0032] According to the above, in order to facilitate the fixing of the top opening of the reaction tube, a pressure plate 8 is provided on the inner side of the outer frame 1, a connecting block 5 is welded to the top of the pressure plate 8, and a fixing hole 18 is opened at the top of the pressure plate 8. The reaction tube body 10 is provided on the inner side of the placement plate 2, and a cap 11 is attached to the reaction tube body 10. A placement hole 9 is opened at the top of the placement plate 2, and the reaction tube body 10 slides with the placement hole 9. A fixing block 12 is welded to the top of the placement plate 2, and a rotating plate 14 is provided between the fixing blocks 12. A slot 15 is opened at the top of the rotating plate 14, and an insertion hole 16 is opened on the rotating plate 14.

[0033] In this implementation scheme: by starting the rotating motor 13 fixed by the fixed block 12, the rotating plate 14 fixed by the output shaft of the rotating motor 13 is driven to rotate, thereby causing the cover 11 fixed by the slot 15 on the rotating plate 14 to rotate a certain arc and cover the opening at the top of the reaction tube, thereby blocking the opening at the top of the reaction tube. In conjunction with the squeezing of the insertion rod 17, the tightness of the cover 11 in blocking the reaction tube body 10 is further improved.

[0034] In an optional embodiment: one end of the electric push rod 4 is fixedly connected to the top of the inner side of the outer frame 1, the slide of the electric push rod 4 is slidably connected to the moving plate 3, and one end of the slide of the electric push rod 4 is fixedly connected to the top of the pressure plate 8.

[0035] In this embodiment: by setting an electric push rod 4, it is convenient to move the pressure plate 8 fixed at one end of the electric push rod 4 slide rod by extending the slide rod of the electric push rod 4.

[0036] In an optional embodiment: the movable plate 3 is located directly above the pressure plate 8, the bottom end of the pressure plate 8 is fixedly connected to a motor 6, the output shaft of the motor 6 is fixedly connected to a threaded rod 7, and the threaded rod 7 is rotatably connected to the pressure plate 8.

[0037] In this embodiment: by setting up a motor 6, it is convenient to drive the threaded rod 7 fixed at one end of the output shaft of the motor 6 to rotate through the rotation of the output shaft of the motor 6.

[0038] In an optional embodiment: the movable plate 3 is helically connected to the threaded rod 7, the motor 6 is located directly below the connecting block 5, and the other end of the threaded rod 7 is rotatably connected to the top end of the inner side of the connecting block 5.

[0039] In this embodiment: by setting the threaded rod 7, the rotating threaded rod 7 can drive the moving plate 3, which is spiraled by the threaded rod 7, to move along the threaded rod 7.

[0040] According to the above, the bottom end of the movable plate 3 is fixedly connected to the insertion rod 17, the cross-section of the insertion rod 17 is consistent with the cross-section of the fixing hole 18, and the insertion rod 17 is slidably connected to the fixing hole 18.

[0041] In this embodiment: by setting the insertion rod 17, it is convenient to drive the insertion rod 17 to squeeze the cover 11 by sliding between the insertion rod 17 and the insertion hole 16.

[0042] In an optional embodiment: there are two fixing blocks 12, and a rotating motor 13 is fixedly connected to one side of the fixing block 12. The output shaft of the rotating motor 13 is rotatably connected to the fixing block 12, and one end of the output shaft of the rotating motor 13 is fixedly connected to one side of the rotating plate 14.

[0043] In this embodiment: by setting a rotary motor 13, the rotary plate 14 fixed to the output shaft of the rotary motor 13 can be rotated by the rotation of the output shaft of the rotary motor 13.

[0044] In an optional embodiment: the cover 11 is slidably connected to the slot 15, and the bottom of the inner side of the slot 15 is provided with an insertion hole 16. The cross-section of the insertion hole 16 is consistent with the cross-section of the insertion rod 17, and the insertion hole 16 is slidably connected to the insertion rod 17.

[0045] In this embodiment: by setting the card slot 15, it is convenient to store the cap 11 through the card slot 15, and to a certain extent prevent the cap 11 from falling off.

[0046] The working principle and usage process of this utility model are as follows: When using this utility model, first place the reaction tube body 10 inside the placement hole 9 opened at the top of the plate. At the same time as placing the reaction tube body 10, place the cap 11 fixed to the reaction tube body 10 inside the slot 15 opened at the top of the rotating plate 14 set at the top of the placement plate 2. The left and right sides of the rotating plate 14 are in contact with the fixing blocks 12. The bottom end of the fixing block 12 is fixedly connected to the top of the placement plate 2. A rotating motor 13 is fixedly connected to one side of the fixing block 12. The output shaft of the rotating motor 13 is rotatably connected to the fixing block 12, and one end of the output shaft of the rotating motor 13 is fixedly connected to one side of the rotating plate 14. At this time, by starting the rotating motor 13, the rotating motor 13 is driven to output... The rotating plate 14, fixed to the output shaft, rotates, thereby causing the cover 11, placed inside the slot 15 at the top of the rotating plate 14, to lock onto the opening at the top of the reaction tube body 10 after rotating a certain angle. At this time, the cover 11 is only in contact with the opening at the top of the reaction tube body 10. Next, the electric push rod 4 should be activated. One end of the sleeve of the electric push rod 4 is fixedly connected to the top of the inner side of the outer frame 1, and the bottom end of the inner side of the outer frame 1 is fixedly connected to the bottom end of the placement plate 2. One end of the slide of the electric push rod 4 is fixedly connected to the top of the pressure plate 8 set above the placement plate 2. The extension of the slide of the electric push rod 4 causes the pressure plate 8, which is fixed to the slide of the electric push rod 4, to move downward. The pressure plate 8 is located directly above the placement plate 2, and thus... The bottom end of the moving pressure plate 8 contacts the top end of the rotating plate 14. The downward pressing force of the pressure plate 8 causes one side of the rotating plate 14, suspended in mid-air, to contact the top end of the placement plate 2. This causes the rotating plate 14 to completely fix the opening at the top of the reaction tube body 10 through the sealing cap 11 fixed by the slot 15. A movable plate 3 is positioned above the pressure plate 8. A connecting block 5 is fixedly connected to the top end of the pressure plate 8, and a motor 6 is fixedly connected to the bottom end of the pressure plate 8. The motor 6 is located directly below the connecting block 5, and its output shaft is rotatably connected to the pressure plate 8. A threaded rod 7 is fixedly connected to one end of the motor 6's output shaft, and this threaded rod 7 is rotatably connected to the pressure plate 8. One end of the threaded rod 7 rotates towards the top end inside the connecting block 5. A movable plate 3 is spirally connected, and a rod 17 is fixedly connected to the bottom end of the movable plate 3. A fixing hole 18 is provided on the pressure plate 8. The cross-section of the rod 17 is consistent with that of the fixing hole 18, and the rod 17 is slidably connected to the fixing hole 18. After the pressure plate 8 completes the pressing of the rotating plate 14, the motor 6 located on both sides of the bottom end of the pressure plate 8 is activated to drive the threaded rod 7 fixed to the output shaft of the motor 6 to rotate. The rotation of the threaded rod 7 drives the movable plate 3 to move downward, thereby driving the rod 17 fixed at the bottom end of the movable plate 3 to slide along the fixing hole 18 on the pressure plate 8 to the bottom of the pressure plate 8, and slide to connect with the insertion hole 16 located on the other side of the rotating plate 14 and fixedly connected to the slot 15. At this time, the cover 11 is located inside the insertion hole 16.The downward movement of the insertion rod 17 causes its bottom end to press against the center of the cover 11. This, combined with the fixing of the cover 11's perimeter by the rotating plate 14, further enhances the cover 11's fixing strength. This prevents uneven force during engagement, which could lead to partial incomplete engagement. The motor 6 is located on the left and right sides of the placement plate 2 and does not contact it.

[0047] In this utility model, the motor 6, threaded rod 7, electric push rod 4 and other components are all existing technologies, and their working principle is consistent with that of similar products on the market, so they will not be described in detail here.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A PCR reaction tube sealing device, comprising an outer frame (1), characterized in that: A placement plate (2) is fixedly connected to the bottom of the inner side of the outer frame (1), an electric push rod (4) is fixedly connected to the top of the inner side of the outer frame (1), a movable plate (3) is provided on the inner side of the outer frame (1), a pressure plate (8) is provided on the inner side of the outer frame (1), a connecting block (5) is fixedly connected to the top of the pressure plate (8), a fixing hole (18) is opened on the top of the pressure plate (8), and a reaction tube body (10) is provided on the inner side of the placement plate (2). The reaction tube body (10) is fixedly connected to a cap (11), and the top of the placement plate (2) is provided with a placement hole (9). The reaction tube body (10) is slidably connected to the placement hole (9). The top of the placement plate (2) is fixedly connected to a fixing block (12). A rotating plate (14) is provided between the fixing blocks (12). The top of the rotating plate (14) is provided with a slot (15), and the rotating plate (14) is provided with an insertion hole (16).

2. The PCR reaction tube sealing device according to claim 1, characterized in that: One end of the electric push rod (4) sleeve is fixedly connected to the top of the inner side of the outer frame (1), the slide rod of the electric push rod (4) is slidably connected to the moving plate (3), and one end of the slide rod of the electric push rod (4) is fixedly connected to the top of the pressure plate (8).

3. The PCR reaction tube sealing device according to claim 1, characterized in that: The movable plate (3) is located directly above the pressure plate (8). The bottom end of the pressure plate (8) is fixedly connected to a motor (6). The output shaft of the motor (6) is fixedly connected to a threaded rod (7). The threaded rod (7) is rotatably connected to the pressure plate (8).

4. The PCR reaction tube sealing device according to claim 3, characterized in that: The movable plate (3) is helically connected to the threaded rod (7), the motor (6) is located directly below the connecting block (5), and the other end of the threaded rod (7) is rotatably connected to the top of the inner side of the connecting block (5).

5. A PCR reaction tube sealing device according to claim 1, characterized in that: The bottom end of the movable plate (3) is fixedly connected to a plug rod (17), the cross-section of the plug rod (17) is consistent with the cross-section of the fixing hole (18), and the plug rod (17) is slidably connected to the fixing hole (18).

6. The PCR reaction tube sealing device according to claim 1, characterized in that: There are two fixed blocks (12). A rotating motor (13) is fixedly connected to one side of the fixed block (12). The output shaft of the rotating motor (13) is rotatably connected to the fixed block (12). One end of the output shaft of the rotating motor (13) is fixedly connected to one side of the rotating plate (14).

7. A PCR reaction tube sealing device according to claim 1, characterized in that: The cover (11) is slidably connected to the slot (15). The bottom of the inner side of the slot (15) is provided with an insertion hole (16). The cross-section of the insertion hole (16) is consistent with the cross-section of the insertion rod (17). The insertion hole (16) is slidably connected to the insertion rod (17).

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