Rotating mechanism of liquid nitrogen container sample frame

Abstract

The utility model belongs to the technical field of freezing equipment, and particularly relates to a rotating mechanism of a liquid nitrogen tank sample rack, which comprises a tank body, a supporting block is fixedly arranged at the lower end of the inner wall of the tank body, a rotating rod is rotatably arranged in the supporting block through a bearing, and the upper end of the rotating rod penetrates through the upper side wall of the tank body and extends to the outside. According to the device, through cooperation of the handle, the rotating rod and the adjusting rod, the four sample frames can be driven to rotate, when a sample needs to be taken from the upper end of the sample frame or placed at the upper end of the sample frame, the rotating rod can be rotated, the rotating rod can be rotated, and the rotating rod can be rotated to drive the four sample frames to rotate, so that the sample can be taken out from the upper end of the sample frame or placed at the upper end of the sample frame. The corresponding sample frame is rotated to the lower end of the sampling opening, and the sample frame is lifted by rotating a rotating block and matching the rotating block with a screw rod, a sliding block, a clamping plate and the sample frame, so that a sample is convenient to place or take, and the use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of freezing equipment, in particular to a rotating mechanism of a liquid nitrogen tank sample rack. Background Art

[0002] Liquid nitrogen tanks are widely used biological sample freezing equipment in the fields of biology and medicine. In order to reasonably utilize the freezing space of the liquid nitrogen tank, a rotatable sample rack is usually set in the tank, and the rotation of the sample rack is mainly carried out through cooperation with the rotating mechanism;

[0003] However, the following technical problems still exist when the rotating mechanism is used:

[0004] The existing rotating mechanism only plays the role of rotating transmission. When the sample needs to be placed on the upper end of the sample rack or taken from the upper end of the sample rack, the height of the sample rack cannot be adjusted by the rotating mechanism to facilitate taking, which makes it difficult to use.

[0005] Therefore, a rotating mechanism of a liquid nitrogen tank sample rack is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a rotating mechanism for a liquid nitrogen tank sample rack to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rotating mechanism of a liquid nitrogen tank sample rack, comprising a tank body, a supporting block is fixedly arranged at the lower end of the inner wall of the tank body, a rotating rod is rotatably arranged inside the supporting block through a bearing, an upper end of the rotating rod passes through the upper side wall of the tank body and extends to the outside, an adjusting rod is fixedly arranged on the outside of the rotating rod, and evenly arranged strip grooves are opened around the adjusting rod, and a screw rod is longitudinally rotatably arranged inside the strip groove through a bearing, the upper end of the screw rod passes through the side wall of the adjusting rod, extends to the upper end and is fixedly arranged with a rotating block, a slider is threadedly arranged on the rod wall of the screw rod, the side wall of the slider is slidably connected to the inner wall of the strip groove, a clamping plate is fixedly arranged on the side wall of the slider, a sample rack is fixedly arranged inside the clamping plate, a sampling port is fixedly arranged on the right end of the upper side wall of the tank body, and a sealing cover is provided on the upper end of the sampling port through a fixing mechanism.

[0008] Preferably, a symmetrical shock-absorbing base is fixedly provided on the lower side wall of the tank body.

[0009] Preferably, an annular groove is formed on the upper side wall of the tank body around the adjusting rod, a sealing ring is fixedly provided inside the annular groove, and an inner wall of the sealing ring contacts the side wall of the adjusting rod.

[0010] Preferably, the fixing mechanism includes two first fixing blocks, both of which are fixedly connected to the lower side wall of the sealing cover, and the side walls of the two first fixing blocks are threadedly provided with fastening bolts, and the adjacent ends of the two fastening bolts are threadedly connected to the side wall of the sampling port.

[0011] Preferably, a handle is fixedly provided on the upper end of the rotating rod.

[0012] Preferably, an annular plate is fixedly provided on the upper side wall of the tank body outside the adjusting rod, a second fixed block is fixedly provided on the left side wall of the annular plate, a cavity is provided inside the second fixed block, a moving block is slidably provided on the inner wall of the cavity, an arc-shaped clamping rod is fixedly provided on the right side wall of the moving block, the outer wall of the adjusting rod is provided with evenly arranged clamping grooves corresponding to the arc-shaped clamping rod, the other end of the arc-shaped clamping rod is clamped with the clamping groove, a spring is fixedly provided on the left side wall of the moving block, and the left end of the spring is fixedly connected to the inner wall of the second fixed block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The present application can drive four sample racks to rotate through the cooperation of the handle, the rotating rod and the adjusting rod. When it is necessary to take samples from the upper end of the sample rack or place the samples on the upper end of the sample rack, the rotating rod can be rotated to rotate the corresponding sample rack to the lower end of the sampling port, and the sample rack can be raised by rotating the rotating block, and the rotating block and the screw rod, the slider, the clamping plate and the sample rack cooperate to facilitate the placement or taking of samples and make it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0017] Figure 3 It is a schematic diagram of the structure of the slider, the card plate and the sample rack;

[0018] Figure 4 It is a schematic diagram of a top cross-sectional structure of the annular plate and the second fixing block;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the sampling port and the sealing cover.

[0020] In the figure: 1 tank body, 2 support block, 3 rotating rod, 4 adjusting rod, 5 screw rod, 6 rotating block, 7 slider, 8 clamping plate, 9 sample rack, 10 sampling port, 11 sealing cover, 12 shock-absorbing base, 13 first fixed block, 14 handle, 15 annular plate, 16 second fixed block, 17 moving block, 18 arc clamping rod, 19 spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A rotating mechanism for a sample rack of a liquid nitrogen tank comprises a tank body 1, a support block 2 is fixedly arranged at the lower end of the inner wall of the tank body 1, a rotating rod 3 is rotatably arranged inside the supporting block 2 through a bearing, the upper end of the rotating rod 3 penetrates the upper side wall of the tank body 1 and extends to the outside, an adjusting rod 4 is fixedly arranged outside the rotating rod 3, and evenly arranged strip grooves are opened around the adjusting rod 4, and screw rods 5 are longitudinally rotatably arranged inside the strip grooves through bearings, the upper end of the screw rod 5 penetrates the side wall of the adjusting rod 4 and extends to the upper end and is fixedly provided with a rotating block 6, a slider 7 is threadedly arranged on the rod wall of the screw rod 5, the side wall of the slider 7 is slidably connected to the inner wall of the strip groove, a clamping plate 8 is fixedly arranged on the side wall of the clamping plate A sample rack 9 is fixedly arranged inside 8, a sampling port 10 is fixedly arranged at the right end of the upper side wall of the tank body 1, and a sealing cover 11 is arranged at the upper end of the sampling port 10 through a fixing mechanism. The present application can drive the four sample racks 9 to rotate through the cooperation of the handle 14, the rotating rod 3 and the adjusting rod 4. When it is necessary to take a sample from the upper end of the sample rack 9 or place the sample on the upper end of the sample rack, the rotating rod 3 can be rotated to rotate the corresponding sample rack 9 to the lower end of the sampling port, and the sample rack 9 can be raised by rotating the rotating block 6, the rotating block 6 and the screw 5, the slider 7, the card plate 8 and the sample rack 9, so as to facilitate the placement or taking of the sample and make it more convenient to use.

[0025] A symmetrical shock-absorbing base 12 is fixedly provided on the lower side wall of the tank body 1 .

[0026] An annular groove is provided on the upper side wall of the tank body 1 around the adjusting rod 4, and a sealing ring is fixedly arranged inside the annular groove. The inner wall of the sealing ring contacts the side wall of the adjusting rod 4, thereby increasing the sealing effect of the connection position between the adjusting rod 4 and the upper side wall of the tank body 1 and preventing leakage of liquid nitrogen inside.

[0027] The fixing mechanism includes two first fixing blocks 13, and the two first fixing blocks 13 are fixedly connected to the lower side wall of the sealing cover 11. The side walls of the two first fixing blocks 13 are threaded with fastening bolts, and the ends of the two fastening bolts that are close to each other are threadedly connected to the side wall of the sampling port 10. The fixing mechanism is used to install and fix the sealing cover 11 and the sampling port.

[0028] A handle 14 is fixedly provided on the upper end of the rotating rod 3 .

[0029] An annular plate 15 is fixedly provided on the upper side wall of the tank body 1 outside the adjusting rod 4, a second fixed block 16 is fixedly provided on the left side wall of the annular plate 15, a cavity is provided inside the second fixed block 16, a moving block 17 is slidably provided on the inner wall of the cavity, an arc-shaped clamping rod 18 is fixedly provided on the right side wall of the moving block 17, the outer wall of the adjusting rod 4 is provided with evenly arranged clamping grooves corresponding to the arc-shaped clamping rod 18, the other end of the arc-shaped clamping rod 18 is clamped with the clamping groove, a spring 19 is fixedly provided on the left side wall of the moving block 17, the left end of the spring 19 is fixedly connected to the inner wall of the second fixed block 16, a total of four clamping grooves are provided on the outer wall of the adjusting rod 4, corresponding to the four sample racks 9 respectively, and every time the arc-shaped clamping rod 18 switches a clamping slot, it means that the sample rack 9 at the lower end has rotated ninety degrees.

[0030] Working principle:

[0031] When it is necessary to place the sample on the sample rack 9 or take the sample from the upper end of the sample rack 9, turn the handle 14, the handle 14 drives the rotating rod 3 to rotate, the rotating rod 3 drives the adjusting rod 4 to rotate, the adjusting rod 4 drives the sample rack 9 to rotate to the lower end of the sampling port 10, and the corresponding rotating block 6 is rotated. The rotating block 6 drives the screw rod 5 to rotate, the screw rod 5 drives the slider 7 threadedly connected to the rod wall to rise, and the slider 7 drives the clamping plate 8 of the side wall and the sample rack 9 to rise, thereby moving to the lower end of the sampling port 10 to place or take the sample. After the operation is completed, the sealing cover 11 is closed and fixed by the fixing mechanism. When not in use, the adjusting rod 4 is limited and fixed by the cooperation of the annular plate 15, the second fixing block 16, the moving block 17, the arc clamping rod 18 and the spring 19.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotating mechanism for a liquid nitrogen tank sample rack, comprising a tank body (1), characterized in that: A support block (2) is fixedly provided at the lower end of the inner wall of the tank body (1), a rotating rod (3) is rotatably provided inside the support block (2) via a bearing, the upper end of the rotating rod (3) passes through the upper side wall of the tank body (1) and extends to the outside, an adjusting rod (4) is fixedly provided outside the rotating rod (3), the adjusting rod (4) is provided with evenly arranged strip grooves around its periphery, a screw rod (5) is longitudinally rotatably provided inside each of the strip grooves via a bearing, the upper end of the screw rod (5) passes through the adjusting rod ( The side wall of the tank body (4) extends to the upper end and is fixedly provided with a rotating block (6), the rod wall of the screw rod (5) is threadedly provided with a slider (7), the side wall of the slider (7) is slidably connected to the inner wall of the strip groove, the side wall of the slider (7) is fixedly provided with a clamping plate (8), the interior of the clamping plate (8) is fixedly provided with a sample holder (9), the right end of the upper side wall of the tank body (1) is fixedly provided with a sampling port (10), and the upper end of the sampling port (10) is provided with a sealing cover (11) through a fixing mechanism.

2. The rotating mechanism of the liquid nitrogen tank sample rack according to claim 1, characterized in that: A symmetrical shock-absorbing base (12) is fixedly provided on the lower side wall of the tank body (1).

3. The rotating mechanism of the liquid nitrogen tank sample rack according to claim 1, characterized in that: An annular groove is provided on the upper side wall of the tank body (1) around the adjusting rod (4), a sealing ring is fixedly arranged inside the annular groove, and the inner wall of the sealing ring contacts the side wall of the adjusting rod (4).

4. The rotating mechanism of the liquid nitrogen tank sample rack according to claim 1, characterized in that: The fixing mechanism comprises two first fixing blocks (13), the two first fixing blocks (13) are fixedly connected to the lower side wall of the sealing cover (11), the side walls of the two first fixing blocks (13) are threadedly provided with fastening bolts, and the ends of the two fastening bolts that are close to each other are threadedly connected to the side wall of the sampling port (10).

5. The rotating mechanism of the liquid nitrogen tank sample rack according to claim 1, characterized in that: A handle (14) is fixedly provided on the upper end of the rotating rod (3).

6. The rotating mechanism of the liquid nitrogen tank sample rack according to claim 1, characterized in that: An annular plate (15) is fixedly provided on the upper side wall of the tank body (1) outside the adjusting rod (4), a second fixed block (16) is fixedly provided on the left side wall of the annular plate (15), a cavity is provided inside the second fixed block (16), a moving block (17) is slidably provided on the inner wall of the cavity, an arc-shaped clamping rod (18) is fixedly provided on the right side wall of the moving block (17), the outer wall of the adjusting rod (4) is provided with evenly arranged clamping grooves corresponding to the arc-shaped clamping rod (18), the other end of the arc-shaped clamping rod (18) is clamped with the clamping groove, a spring (19) is fixedly provided on the left side wall of the moving block (17), and the left end of the spring (19) is fixedly connected to the inner wall of the second fixed block (16).

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