Reagent sampling device of protein analyzer

Abstract

The utility model belongs to the technical field of protein analyzers, and particularly relates to a reagent sampling device of a protein analyzer, which comprises a supporting base, a rotating shaft rotationally arranged on the supporting base, a rotating driving mechanism, a reagent placing disc sleeved on the rotating shaft, and a reagent limiting disc arranged above the reagent placing disc, a plurality of outer ring placing grooves arranged along the circumferential direction of the rotating shaft are formed in the reagent placing disc, the reagent bottles are circumferentially arranged and placed in the corresponding outer ring placing grooves, the overall occupied area is smaller, and the rotating shaft is driven to rotate through the rotating driving mechanism so as to drive the reagent placing disc to rotate; a plurality of outer ring limiting grooves in one-to-one correspondence with the outer ring placing grooves are formed in the reagent limiting disc, when the reagent bottles are placed on the outer ring placing grooves, the corresponding outer ring limiting grooves are arranged on the peripheral sides of the reagent bottles in a sleeving mode, the reagent bottles are arranged in the outer ring limiting grooves in a sleeving mode, and therefore the reagent bottles can be conveniently taken out. Therefore, the reagent bottles are limited to swing in the horizontal direction, and the reagent bottles are placed stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of protein analyzers, and in particular relates to a reagent sampling device for a protein analyzer. Background Art

[0002] Protein structure refers to the spatial structure of protein molecules. Proteins are mainly composed of chemical elements such as carbon, hydrogen, oxygen, and nitrogen. They are an important class of biological macromolecules. All proteins are polymers formed by the connection of 20 different amino acids. After forming proteins, these amino acids are also called residues. As the application of proteins becomes more and more extensive, protein analysis is also an indispensable part. The current protein analyzer sampling device uses a robot to drive the sampling needle to move and extend it into the reagent bottle placed on the sampling area to achieve sampling. However, the existing reagent bottles are arranged in a square and placed on the sampling area. The sampling area is fixed and can only be sampled by moving the sampling needle by the robot. Not only does it occupy a large area, but it is also inefficient. At the same time, the reagent bottles are placed directly on the sampling area and are prone to swinging and tipping. Summary of the Invention

[0003] The purpose of the utility model is to provide a protein analyzer reagent sampling device with a smaller overall footprint, higher efficiency, and stable reagent bottle placement.

[0004] The utility model is realized by the following technical solutions:

[0005] A protein analyzer reagent sampling device, comprising:

[0006] Support base;

[0007] A rotating shaft, the rotation of which is arranged on the supporting base;

[0008] A rotary drive mechanism, which is provided between the support base and the rotary shaft and is used to drive the rotary shaft to rotate;

[0009] A reagent placement tray is sleeved on the rotating shaft and is used to place reagent bottles. The reagent placement tray is provided with a plurality of outer ring placement grooves arranged along the circumference of the rotating shaft;

[0010] The reagent limiting plate is arranged above the reagent placement plate. The reagent limiting plate is provided with multiple outer ring limiting grooves which correspond one to one with the outer ring placement grooves. When the reagent bottle is placed on the outer ring placement groove, the corresponding outer ring limiting groove is sleeved on the side of the reagent bottle to limit the swing of the reagent bottle in the horizontal direction.

[0011] In the above-mentioned reagent sampling device for a protein analyzer, the reagent placement disk is further provided with a plurality of inner ring placement grooves arranged along the circumference of the rotating shaft, and the inner ring placement grooves are staggered with the outer ring placement grooves.

[0012] In the above-mentioned reagent sampling device for a protein analyzer, the reagent limiting plate comprises:

[0013] An outer limiting ring is provided above the reagent placement tray, the outer ring limiting groove is provided on the outer limiting ring, and the inner side of the outer limiting ring is concavely provided with a plurality of first limiting notches which are arranged in a one-to-one correspondence with the inner ring placement grooves;

[0014] The inner limit ring is arranged on the inner side of the outer limit ring. The outer side of the inner limit ring is concavely provided with a plurality of second limit notches which correspond one to one with the inner ring placement groove. When the reagent bottle is placed in the inner ring placement groove, the first limit notch and the second limit notch cooperate to limit the swing of the reagent bottle in the horizontal direction.

[0015] As described above, a protein analyzer reagent sampling device is provided on the reagent placement plate, wherein a first connecting rod for connecting and supporting an outer limiting ring is provided, and a plurality of the first connecting rods are arranged circumferentially along the rotating shaft. The reagent placement plate is also provided with a second connecting rod for connecting and supporting an inner limiting ring, and a plurality of the second connecting rods are arranged circumferentially along the rotating shaft. The inner limiting ring is fixedly sleeved on the rotating shaft.

[0016] In the above-mentioned reagent sampling device for a protein analyzer, a first through hole is provided on the bottom of the outer ring placement groove, and a second through hole is provided on the bottom of the inner ring placement groove.

[0017] In the above-mentioned protein analyzer reagent sampling device, the rotary drive mechanism includes:

[0018] A rotation drive mounting plate is provided on the support base;

[0019] a rotary drive motor, which is mounted on a rotary drive mounting plate;

[0020] A first rotating gear, which is sleeved on the rotation output end of the rotary drive motor;

[0021] A second rotating gear sleeved on the rotating shaft;

[0022] a transmission belt, which is sleeved on the first rotating gear and the second rotating gear;

[0023] An encoding disc is sleeved on the rotating shaft and is provided with a plurality of detection ends arranged along the circumferential direction;

[0024] An in-place detection baffle is provided below the encoding disc;

[0025] a first photoelectric switch, wherein the encoding disk can be rotated to a plurality of detection ends corresponding to the first photoelectric switch respectively;

[0026] The second photoelectric switch, the in-position detection baffle can rotate with the encoding disk to be opposite to the second photoelectric switch.

[0027] The above-mentioned protein analyzer reagent sampling device further includes a sampling structure provided above the reagent placement tray, wherein the sampling structure includes:

[0028] sampling bracket;

[0029] A sampling mounting plate, which is movably mounted on the sampling bracket;

[0030] A first sampling drive mechanism, which is used to drive the sampling mounting plate to move horizontally along the X-axis direction;

[0031] The second sampling drive mechanism is used to drive the sampling mounting plate to move horizontally along the Y-axis direction;

[0032] A sampling mechanism, which is movably arranged on the sampling mounting plate, and includes a sampling needle;

[0033] a third sampling drive mechanism, which is used to drive the sampling mechanism to move up and down along the Z-axis;

[0034] The anti-pollution cover is arranged on the sampling mounting plate and covers the sampling mechanism and the third sampling drive mechanism. The third sampling drive mechanism can drive the sampling needle to move up and down along the Z axis to extend out of the anti-pollution cover or retract into the anti-pollution cover.

[0035] As described above, a protein analyzer reagent sampling device is further provided with a stirring mechanism and a stirring drive mechanism for driving the stirring mechanism to move up and down along the Z-axis direction on the sampling mounting plate. The stirring mechanism includes a stirring mounting part, a stirring rod rotatably mounted on the stirring mounting part, and a stirring drive part mounted on the stirring mounting part for driving the stirring rod to rotate. The anti-fouling cover covers the stirring mechanism and the stirring drive mechanism, and the stirring drive mechanism can drive the stirring rod to move up and down along the Z-axis direction to extend out of the anti-fouling cover or retract into the anti-fouling cover. The anti-fouling cover is provided with a first cover body clearance hole and a second cover body clearance hole for respectively allowing the sampling needle and the stirring rod to pass through.

[0036] As described above, a protein analyzer reagent sampling device, the sampling mechanism also includes a sampling mounting part, a mounting needle sleeve provided on the sampling mounting part, a needle tube inserted through the mounting needle sleeve, and a sampling needle connector sleeved on one end of the sampling needle, the sampling needle inserted through the needle tube, the sampling mechanism also includes a liquid level detection device electrically connected to the sampling needle for detecting whether the sampling needle contacts the reagent liquid, and an insulating sleeve sleeved between the sampling needle and the needle tube.

[0037] As described above, a protein analyzer reagent sampling device, the liquid level detection device includes a detection mounting plate arranged on one side of the sampling mounting part, a detection circuit board arranged in the detection mounting plate, a detection end plate with one end electrically connected to the sampling needle and the other end electrically connected to the detection circuit board, and a shielding cover arranged on the detection mounting plate.

[0038] Compared with the prior art, the utility model has the following advantages:

[0039] The utility model provides a reagent sampling device for a protein analyzer, comprising a supporting base, a rotating shaft rotatably arranged on the supporting base, a rotating driving mechanism, a reagent placing disk sleeved on the rotating shaft, and a reagent limiting disk arranged above the reagent placing disk, wherein the reagent placing disk is provided with a plurality of outer ring placing grooves arranged along the circumference of the rotating shaft. During sampling, reagent bottles are arranged in a circular manner and placed in the corresponding outer ring placing grooves, so that the overall footprint is smaller. The rotating shaft is driven to rotate by the rotating driving mechanism, thereby driving the reagent placing disk to rotate, so as to cooperate with the sampling mechanism to sample the reagents in the reagent bottles on each outer ring placing groove in turn, so that the efficiency is higher, and the reagent limiting disk is provided with a plurality of outer ring limiting grooves arranged in one-to-one correspondence with the outer ring placing grooves. When the reagent bottle is placed on the outer ring placing groove, the corresponding outer ring limiting groove is sleeved on the circumference of the reagent bottle to limit the swing of the reagent bottle in the horizontal direction, so that the reagent bottle is placed stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0041] Figure 1 This is a schematic structural diagram of a reagent sampling device for a protein analyzer in a specific embodiment of the present invention;

[0042] Figure 2 This is a schematic structural diagram of a reagent sampling device for a protein analyzer in a specific embodiment of the present invention;

[0043] Figure 3 This is a schematic structural diagram of a sampling structure in a specific embodiment of the present invention;

[0044] Figure 4 This is a schematic structural diagram of a sampling structure in a specific embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the partial decomposition structure of the sampling structure in a specific embodiment of the present utility model;

[0046] Figure 6 It is a schematic diagram of the exploded structure of the sampling mechanism in a specific embodiment of the present utility model. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0048] When the embodiments of the present invention mention ordinal numbers such as "first" and "second", unless they do express the meaning of order according to the context, they should be understood as being merely for the purpose of distinction.

[0049] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0050] Specific embodiments, such as Figure 1-6 The protein analyzer reagent sampling device shown includes: a support base 31; a rotating shaft 32, which is rotatably arranged on the support base 31; a rotating drive mechanism 33, which is arranged between the support base 31 and the rotating shaft 32 and is used to drive the rotating shaft 32 to rotate; a reagent placement tray 34, which is sleeved on the rotating shaft 32 and is used to place reagent bottles, and the reagent placement tray 34 is provided with a plurality of outer ring placement grooves 341 arranged along the circumference of the rotating shaft 32; a reagent limiting tray 35, which is arranged above the reagent placement tray 34, and the reagent limiting tray 35 is provided with a plurality of outer ring limiting grooves 353 arranged one-to-one with the outer ring placement grooves 341. When the reagent bottle is placed on the outer ring placement groove 341, the corresponding outer ring limiting groove 353 is sleeved on the circumference of the reagent bottle to limit the swing of the reagent bottle in the horizontal direction. During sampling, the reagent bottles are arranged in a circle and placed in the corresponding outer ring placement grooves, which has a smaller overall footprint. The rotating shaft is driven to rotate by the rotary drive mechanism, thereby driving the reagent placement plate to rotate, so as to cooperate with the sampling mechanism to sample the reagents in the reagent bottles on each outer ring placement groove in turn, which is more efficient. The reagent limiting plate is provided with a plurality of outer ring limiting grooves which are arranged one by one corresponding to the outer ring placement grooves. When the reagent bottle is placed on the outer ring placement groove, the corresponding outer ring limiting groove is sleeved on the side of the reagent bottle to limit the swing of the reagent bottle in the horizontal direction, so that the reagent bottle can be placed stably.

[0051] Specifically, the reagent tray 34 is further provided with a plurality of inner ring placement grooves 342 arranged circumferentially along the rotating shaft 32. The inner ring placement grooves 342 are offset from the outer ring placement grooves 341. Reagent bottles are prevented from being placed in the inner ring placement grooves 342, thereby increasing the number of reagent bottles that can be placed on the reagent tray 34, reducing the number of reagent bottle replacements, improving efficiency, and reducing the footprint.

[0052] In addition, the reagent limiting disk 35 includes: an outer limiting ring 351, which is arranged above the reagent placement disk 34; the outer ring limiting groove 353 is provided on the outer limiting ring 351; the inner side of the outer limiting ring 351 is recessed with a plurality of first limiting notches 361 corresponding to the inner ring placement groove 342; and an inner limiting ring 352, which is arranged on the inner side of the outer limiting ring 351; the outer side of the inner limiting ring 352 is recessed with a plurality of second limiting notches 362 corresponding to the inner ring placement groove 342. When the reagent bottle is placed in the inner ring placement groove 342, the first limiting notches 361 and the second limiting notches 362 cooperate to limit the horizontal swing of the reagent bottle, thereby limiting the position of the reagent bottle placed in the outer ring limiting groove 353 and the inner ring placement groove 342, so that the placement is stable and not easy to tip over.

[0053] Furthermore, the reagent placement tray 34 is provided with a first connecting rod 371 for connecting and supporting the outer limiting ring 351. Multiple first connecting rods 371 are arranged circumferentially along the rotating shaft 32. The reagent placement tray 34 is also provided with a second connecting rod 372 for connecting and supporting the inner limiting ring 352. Multiple second connecting rods 372 are arranged circumferentially along the rotating shaft 32. The inner limiting ring 352 is fixedly sleeved on the rotating shaft 32. The outer limiting ring 351 is connected and supported by the first connecting rod 371, and the inner limiting ring 352 is connected and supported by the second connecting rod 372, so that the overall connection is stable.

[0054] More specifically, a first through hole 381 is provided on the bottom of the outer ring placement groove 341, and a second through hole 382 is provided on the bottom of the inner ring placement groove 342. This not only dissipates heat but also saves material.

[0055] Furthermore, the rotation drive mechanism 33 includes: a rotation drive mounting plate 331, which is provided on the support base 31; a rotation drive motor 332, which is provided on the rotation drive mounting plate 331; a first rotation gear 333, which is sleeved on the rotation output end of the rotation drive motor 332; a second rotation gear 334, which is sleeved on the rotation shaft 32; a transmission belt 335, which is sleeved on the first rotation gear 333 and the second rotation gear 334; a coding disk 336, which is sleeved on the rotation shaft 32, and the coding disk 336 is provided with a plurality of detection ends 3361 arranged along the circumferential direction; an in-position detection baffle 337, which is provided below the coding disk 336; a first photoelectric switch 338, and the coding disk 336 can be rotated to the point where the plurality of detection ends 3361 respectively correspond to the first photoelectric switch 338; a second photoelectric switch 339, and the in-position detection baffle 337 can be rotated with the coding disk 336 to be opposite to the second photoelectric switch 339. When the reagent tray 34 rotates until the detection end of the encoder disk 336 is aligned with the second photoelectric switch 339, a position signal is transmitted to the control center, which drives the rotation drive motor 332 to stop working, thereby controlling the rotation angle of the reagent tray 34 and achieving accurate sampling. When the position detection block 337 rotates with the encoder disk 336 to face the second photoelectric switch 339, sampling of all reagent bottles is completed, and an alarm device can be activated to alert.

[0056] Furthermore, the protein analyzer reagent sampling device also includes a sampling structure provided above the reagent placement tray 34, and the sampling structure includes: a sampling bracket 21; a sampling mounting plate 22, which is movably provided on the sampling bracket 21; a first sampling drive mechanism 23, which is used to drive the sampling mounting plate 22 to move horizontally along the X-axis direction; a second sampling drive mechanism 24, which is used to drive the sampling mounting plate 22 to move horizontally along the Y-axis direction; a sampling mechanism 25, which is movably provided on the sampling mounting plate 22, and the sampling mechanism 25 includes a sampling needle 251; a third sampling drive mechanism 26, which is used to drive the sampling mechanism 25 to move up and down along the Z-axis direction; an anti-fouling cover 27, which is provided on the sampling mounting plate 22 and covers the sampling mechanism 25 and the third sampling drive mechanism 26, and the third sampling drive mechanism 26 can drive the sampling needle 251 to move up and down along the Z-axis direction to extend out of the anti-fouling cover 27 or retract into the anti-fouling cover 27. During use, the first sampling drive mechanism, the second sampling drive mechanism and the third sampling drive mechanism cooperate to drive the sampling mechanism to move up and down and laterally, so that the sampling needle moves to the sampling position for sampling. In addition, by arranging an anti-fouling cover to cover the sampling mechanism and the third sampling drive mechanism, the sampling mechanism and the third sampling drive mechanism can be protected, thereby reducing contamination or damage to the sampling mechanism.

[0057] Specifically, the anti-pollution cover 27 is mounted on the sampling mounting plate 22, and the edge of the anti-pollution cover 27 is provided with a plurality of cover connection holes 281 and cover connection bolts 282 that pass through the cover connection holes 281 to connect the anti-pollution cover 27 to the sampling mounting plate 22. The anti-pollution cover 27 is detachably mounted on the sampling mounting plate 22 through the cover connection bolts 282 and the cover connection holes 281. The plurality of cover connection holes 281 are arranged along the circumference of the anti-pollution cover 27 along the edge of the anti-pollution cover 27, providing a more stable connection.

[0058] In addition, the sampling mounting plate 22 is provided with a stirring mechanism 29 and a stirring drive mechanism 210 for driving the stirring mechanism 29 to move up and down along the Z-axis. The stirring mechanism 29 includes a stirring mounting member 291, a stirring rod 292 rotatably mounted on the stirring mounting member 291, and a stirring drive member 293 mounted on the stirring mounting member 291 for driving the stirring rod 292 to rotate. The anti-fouling cover 27 covers the stirring mechanism 29 and the stirring drive mechanism 210, and the stirring drive mechanism 210 can drive the stirring rod 292 to move up and down along the Z-axis to extend out of the anti-fouling cover 27 or retract into the anti-fouling cover 27. The anti-fouling cover 27 is provided with a first cover body clearance hole 271 and a second cover body clearance hole 272 for respectively passing the sampling needle 251 and the stirring rod 292. The stirring mechanism 29 can simultaneously achieve the stirring function, making it more convenient to use, more efficient, and smaller in overall size. The first cover body clearance hole 271 and the second cover body clearance hole 272 are provided so that the sampling mechanism 25 and the stirring mechanism 29 can work normally under the premise of being protected by the anti-fouling cover 27. The stirring driving member 293 can be driven by a rotary motor.

[0059] Furthermore, the sampling mechanism 25 also includes a sampling mounting member 252, a mounting needle sleeve 253 mounted on the sampling mounting member 252, a needle tube 254 inserted through the mounting needle sleeve 253, and a sampling needle connector 255 sleeved on one end of the sampling needle 251. The sampling needle 251 is inserted into the needle tube 254. The sampling mechanism 25 also includes a liquid level detection device 256 electrically connected to the sampling needle 251 for detecting whether the sampling needle 251 contacts the reagent liquid. The sampling needle connector 255 is connected to a negative pressure device, so that the sampling needle generates negative pressure to absorb the reagent liquid.

[0060] More specifically, the liquid level detection device 256 includes a detection mounting plate 2561 mounted on one side of the sampling mounting member 252, a detection circuit board 2562 mounted within the detection mounting plate 2561, a detection end plate 2563 electrically connected to the sampling needle 251 at one end and to the detection circuit board 2562 at the other end, and a shielding cover 2564 covering the detection mounting plate 2561. When the sampling end of the sampling needle contacts the reagent solution and moves only 2-3 mm below the liquid surface, a change in capacitance occurs. The detection end plate transmits a capacitance change signal to the detection circuit board, which in turn drives the third sampling drive mechanism to stop driving the sampling mechanism downward in the Z-axis direction, preventing the sampling needle from being immersed in the reagent solution over a large area and potentially contaminating it. The shielding cover 2564 also protects the detection circuit board 2562.

[0061] Furthermore, in order to make it safer to use, the sampling mechanism 25 also includes an insulating sleeve 257 which is sleeved between the sampling needle 251 and the needle tube 254.

[0062] Specifically, the first sampling drive mechanism 23 includes a first sampling drive guide post 231, which is horizontally mounted on the sampling support 21 along the X-axis; a first sampling drive guide sleeve 232, which is sleeved on the first sampling drive guide post 231; a first sampling drive mounting member 233, which is connected to the first sampling drive guide sleeve 232 and on which the sampling mounting plate 22 is movably mounted; and a first sampling drive member 234, which is mounted on the sampling support 21 and is used to drive the first sampling drive mounting member 233 to move along the X-axis. The first sampling drive member 234 can be driven by a telescopic cylinder or by a motor-driven conveyor line for reciprocating movement.

[0063] More specifically, the second sampling drive mechanism 24 includes a second sampling drive guide post 241, which is horizontally mounted on the first sampling drive mounting member 233 along the Y-axis; a second sampling drive guide sleeve 242, which is sleeved on the second sampling drive guide post 241 and connected to the sampling mounting plate 22; and a second sampling drive member 243, which is mounted on the first sampling drive mounting member 233 and is used to drive the sampling mounting plate 22 along the Y-axis. The second sampling drive member 243 can be driven by a telescopic cylinder or by a motor-driven conveyor line for reciprocating movement.

[0064] Furthermore, the third sampling drive mechanism 26 includes a third sampling drive guide post 261 vertically mounted on the sampling mounting plate 22 along the Z-axis. The sampling mounting member 252 is movably mounted on the third sampling drive guide post 261. The third sampling drive mechanism 26 also includes a third sampling drive member 262 for driving the sampling mounting member 252. The third sampling drive member 262 can be driven by a telescopic cylinder or a motor-driven conveyor line for reciprocating movement. Similarly, the stirring drive mechanism 210 has the same structure as the third sampling drive mechanism 26 to drive the stirring mechanism 29 to move up and down along the Z-axis.

[0065] The above is an implementation method provided in conjunction with specific content, and does not necessarily mean that the specific implementation of this utility model is limited to these descriptions. At the same time, due to differences in industry nomenclature, it is not limited to the above nomenclature, nor is it limited to English nomenclature. Any method, structure, etc. similar to or identical to the method, structure, etc. of this utility model, or any technical deduction or replacement based on the concept of this utility model, shall be considered within the scope of protection of this utility model.

Claims

1. A protein analyzer reagent sampling device, characterized in that: include: Support base (31); A rotating shaft (32) rotatably mounted on the supporting base (31); A rotation drive mechanism (33) is provided between the support base (31) and the rotation shaft (32) and is used to drive the rotation shaft (32) to rotate; A reagent placement tray (34) is sleeved on the rotating shaft (32) and is used to place reagent bottles. The reagent placement tray (34) is provided with a plurality of outer ring placement grooves (341) arranged along the circumference of the rotating shaft (32); A reagent limiting plate (35) is provided above the reagent placement plate (34), and the reagent limiting plate (35) is provided with a plurality of outer ring limiting grooves (353) arranged in a one-to-one correspondence with the outer ring placement grooves (341). When the reagent bottle is placed on the outer ring placement grooves (341), the corresponding outer ring limiting grooves (353) are sleeved on the sides of the reagent bottle to limit the swing of the reagent bottle in the horizontal direction; The reagent placement disk (34) is further provided with a plurality of inner ring placement grooves (342) arranged along the circumference of the rotating shaft (32), and the inner ring placement grooves (342) and the outer ring placement grooves (341) are staggered.

2. A protein analyzer reagent sampling device according to claim 1, characterized in that, The reagent limiting disk (35) includes: An outer limiting ring (351) is provided above the reagent placement tray (34), the outer ring limiting groove (353) is provided on the outer limiting ring (351), and the inner side of the outer limiting ring (351) is concavely provided with a plurality of first limiting notches (361) corresponding to the inner ring placement grooves (342); An inner limiting ring (352) is provided on the inner side of the outer limiting ring (351), and a plurality of second limiting notches (362) are concavely provided on the outer side of the inner limiting ring (352), which are arranged in a one-to-one correspondence with the inner ring placement groove (342). When the reagent bottle is placed in the inner ring placement groove (342), the first limiting notches (361) and the second limiting notches (362) cooperate to limit the swing of the reagent bottle in the horizontal direction.

3. A protein analyzer reagent sampling device according to claim 2, characterized in that, The reagent placement tray (34) is provided with a first connecting rod (371) for connecting and supporting an outer limiting ring (351), and a plurality of the first connecting rods (371) are arranged circumferentially along the rotating shaft (32). The reagent placement tray (34) is also provided with a second connecting rod (372) for connecting and supporting an inner limiting ring (352), and a plurality of the second connecting rods (372) are arranged circumferentially along the rotating shaft (32). The inner limiting ring (352) is fixedly sleeved on the rotating shaft (32).

4. A protein analyzer reagent sampling device according to claim 1, characterized in that, A first through hole (381) is provided on the bottom of the outer ring placement groove (341), and a second through hole (382) is provided on the bottom of the inner ring placement groove (342).

5. A protein analyzer reagent sampling device according to claim 1, characterized in that, The rotary drive mechanism (33) comprises: A rotation drive mounting plate (331) is provided on the support base (31); A rotary drive motor (332) is provided on the rotary drive mounting plate (331); a first rotating gear (333) sleeved on a rotating output end of the rotating drive motor (332); A second rotating gear (334) sleeved on the rotating shaft (32); A transmission belt (335) is sleeved on the first rotating gear (333) and the second rotating gear (334); An encoding disk (336) is sleeved on the rotating shaft (32), and the encoding disk (336) is provided with a plurality of detection ends (3361) arranged along the circumferential direction; An in-place detection baffle (337) is provided below the encoding disc (336); a first photoelectric switch (338), wherein the encoding disk (336) is capable of rotating to a plurality of detection ends (3361) corresponding to the first photoelectric switch (338); The second photoelectric switch (339) is configured such that the in-position detection baffle (337) can rotate along with the encoding disk (336) to face the second photoelectric switch (339).

6. A protein analyzer reagent sampling device according to claim 1, characterized in that: It also includes a sampling structure arranged above the reagent placement tray (34), the sampling structure including: sampling bracket (21); A sampling mounting plate (22) is movably mounted on the sampling bracket (21); A first sampling drive mechanism (23) is used to drive the sampling mounting plate (22) to move horizontally along the X-axis direction; A second sampling drive mechanism (24) is used to drive the sampling mounting plate (22) to move horizontally along the Y-axis direction; A sampling mechanism (25) is movably mounted on the sampling mounting plate (22), wherein the sampling mechanism (25) includes a sampling needle (251); A third sampling drive mechanism (26), which is used to drive the sampling mechanism (25) to move up and down along the Z-axis direction; An anti-fouling cover (27) is provided on the sampling mounting plate (22) and covers the sampling mechanism (25) and the third sampling drive mechanism (26). The third sampling drive mechanism (26) is capable of driving the sampling needle (251) to move up and down along the Z-axis direction to extend out of the anti-fouling cover (27) or retract into the anti-fouling cover (27).

7. A protein analyzer reagent sampling device according to claim 6, characterized in that: The sampling mounting plate (22) is further provided with a stirring mechanism (29) and a stirring drive mechanism (210) for driving the stirring mechanism (29) to move up and down along the Z-axis direction. The stirring mechanism (29) includes a stirring mounting member (291), a stirring rod (292) rotatably mounted on the stirring mounting member (291), and a stirring drive member (293) mounted on the stirring mounting member (291) for driving the stirring rod (292) to rotate. The anti-fouling cover (27) covers the stirring mechanism (29) and the stirring drive mechanism (210), and the stirring drive mechanism (210) can drive the stirring rod (292) to move up and down along the Z-axis direction to extend out of the anti-fouling cover (27) or retract into the anti-fouling cover (27). The anti-fouling cover (27) is provided with a first cover body clearance hole (271) and a second cover body clearance hole (272) for respectively allowing the sampling needle (251) and the stirring rod (292) to pass through.

8. A protein analyzer reagent sampling device according to claim 6, characterized in that: The sampling mechanism (25) further comprises a sampling mounting member (252), a mounting needle sleeve (253) provided on the sampling mounting member (252), a needle tube (254) inserted through the mounting needle sleeve (253), and a sampling needle connector (255) sleeved on one end of the sampling needle (251), wherein the sampling needle (251) is inserted through the needle tube (254). The sampling mechanism (25) further comprises a liquid level detection device (256) electrically connected to the sampling needle (251) for detecting whether the sampling needle (251) contacts a reagent liquid, and an insulating sleeve (257) sleeved between the sampling needle (251) and the needle tube (254).

9. A protein analyzer reagent sampling device according to claim 8, characterized in that: The liquid level detection device (256) comprises a detection mounting plate (2561) provided on one side of the sampling mounting member (252), a detection circuit board (2562) provided in the detection mounting plate (2561), a detection end plate (2563) having one end electrically connected to the sampling needle (251) and the other end electrically connected to the detection circuit board (2562), and a shielding cover (2564) provided on the detection mounting plate (2561).

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