A flow injection analyzer

Abstract

The utility model provides a kind of flow injection analyzer, including analyzer body, telescopic support and multi-hole sample disc;Telescopic support includes telescopic component and support seat, the telescopic component is installed in the bottom of the analyzer body, the telescopic end of the telescopic component is connected with the support seat, and the support seat is driven to retract along the axial direction of the analyzer body;Multi-hole sample disc includes central shaft table and annular hole frame, the central shaft table is detachably installed on the support seat, and the annular hole frame is coaxially rotatably connected to the outside of the central shaft table.The utility model drives support seat to retract by telescopic component, and multi-hole sample disc can be erected outside experiment table surface, so as to reduce the space occupied by table surface;Multi-hole sample disc adopts the structure that central shaft positioning is positioned in central shaft table and outer peripheral annular hole frame rotates, the table surface of central shaft table can place sample bottle body, and annular hole frame normally places sample test tube, to meet the simultaneous placement demand of test tube and sample bottle body.

Description

Technical Field

[0001] This utility model relates to the technical field of flow injection analysis equipment, specifically to a flow injection analyzer. Background Technology

[0002] A flow injection analyzer is an automated analytical instrument based on flow injection analysis technology, widely used in environmental monitoring, food safety, pharmaceutical research and development, chemical engineering, and other fields. The core principle of a flow injection analyzer is to inject samples and reagents in a controlled ratio into a closed flow path through a continuously flowing carrier system. After mixing and reaction, the concentration of the target substance is measured by a detector.

[0003] Flow injection analyzers are generally equipped with multi-well sample trays for use. However, multi-well sample trays require additional space on the workbench. Some solution samples are contained in sample bottles, which further occupies workbench space. When workbench space is limited, it is necessary to move other tables to place the sample bottles. If the sample bottles are far apart, it is also necessary to pull a long suction tube, which is quite inconvenient. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a flow injection analyzer that solves the technical problems in the prior art where multi-well sample trays require additional space on the experimental bench, and where sample bottles are used to hold some solution samples, which further occupies experimental bench space.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a flow injection analyzer, comprising:

[0007] The analyzer itself;

[0008] A telescopic support includes a telescopic assembly and a support base. The telescopic assembly is mounted on the bottom of the analyzer body, and the telescopic end of the telescopic assembly is connected to the support base, driving the support base to extend and retract along the axial direction of the analyzer body.

[0009] A porous sample tray includes a central axis platform and an annular hole frame. The central axis platform is detachably mounted on the support base, and the annular hole frame is coaxially sleeved on the outside of the central axis platform and rotatably connected to the central axis platform.

[0010] In some embodiments, both the top of the analyzer body and the top of the support base are provided with connecting protrusions, and the central axis platform is provided with a connecting assembly for detachably connecting with the connecting protrusions.

[0011] In some embodiments, the connecting protrusion has a limiting block on its outer side, and the top of the connecting protrusion has a threaded hole; the connecting assembly includes a hand-operated bolt, the bottom of the central shaft platform has a through hole that matches the connecting protrusion, the through hole has a limiting groove that matches the limiting block, the connecting protrusion is inserted into the inside of the through hole, the limiting block is inserted into the inside of the limiting groove, the hand-operated bolt is inserted into the inside of the through hole and extends downward to be threadedly connected to the threaded hole.

[0012] In some embodiments, the telescopic assembly includes a guide rail, a telescopic plate, and a locking assembly. The guide rail is fixedly connected to the bottom of the analyzer body, the telescopic plate is slidably connected to the inner side of the guide rail, and the locking assembly is mounted on the guide rail and has a locking end for limiting the sliding of the telescopic plate relative to the guide rail.

[0013] In some embodiments, the locking assembly includes a locking bolt, at least one of which is threaded to one side of the guide rail, extends through and to the inside of the guide rail, and abuts against the telescopic plate.

[0014] In some embodiments, a drive mechanism is mounted on the support base, the drive mechanism having a drive end detachably connected to the annular hole frame, driving the annular hole frame to rotate at a fixed angle.

[0015] In some embodiments, the driving mechanism includes a stepper motor, a gear set, and a ring drive frame. The input end of the gear set is connected to the output shaft of the stepper motor, and the output end of the gear set is coaxially connected to the ring drive frame. The top of the ring drive frame is provided with a plug rod, and the bottom of the ring drive frame is provided with a plug hole corresponding to the plug rod.

[0016] In some embodiments, the gear set includes a driving bevel gear, a driven bevel gear, a spur gear, and a ring gear. The driving bevel gear is connected to the output shaft of the stepper motor, the driven bevel gear meshes with the driving bevel gear, the spur gear is coaxially connected with the driven bevel gear, and the ring gear is coaxially connected to the ring drive frame and meshes with the spur gear.

[0017] In some embodiments, the top of the central axis platform is provided with an annular baffle.

[0018] In some embodiments, the top of the central axis platform is provided with an anti-slip layer.

[0019] Compared with the prior art, the flow injection analyzer provided by this utility model can extend beyond the experimental table to set up a multi-well sample tray by driving the support base to extend and retract through the telescopic component, thereby reducing the space occupied on the table. The multi-well sample tray adopts a structure with a central axis stage for central positioning and an outer ring hole frame for rotation. The table surface of the central axis stage can hold sample bottles, while the ring hole frame can normally hold sample tubes, meeting the requirement of simultaneous placement of test tubes and sample bottles. When not in use, the multi-well sample tray can be removed, stacked on top of the flow injection analyzer, and the support base can be retracted to the bottom of the flow injection analyzer for easy storage. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the flow injection analyzer provided in this embodiment of the utility model;

[0021] Figure 2 This is a three-dimensional exploded view of the flow injection analyzer provided in this embodiment of the present invention;

[0022] Figure 3 This is a three-dimensional elevation view of the porous sample disk of the flow injection analyzer provided in this embodiment of the present invention;

[0023] Figure 4 This is a diagram showing the collapsed storage of the flow injection analyzer provided in this embodiment of the present invention;

[0024] Figure 5 This is a top view of the drive mechanism of the flow injection analyzer provided in this embodiment of the present invention;

[0025] Figure 6 This is a transmission diagram of the drive mechanism of the flow injection analyzer provided in this embodiment of the utility model;

[0026] Figure 7 This is a cross-sectional view of the porous sample tray of the flow injection analyzer provided in this embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Analyzer body;

[0029] 2. Telescopic bracket; 21. Telescopic assembly; 211. Guide rail; 212. Telescopic plate; 213. Locking assembly; 213a. Locking bolt; 22. Support base; 23. Connecting protrusion; 24. Limiting block; 25. Threaded hole; 26. Connecting assembly; 261. Hand-operated bolt; 27. Drive mechanism; 271. Stepper motor; 272. Gear set; 272a. Driving bevel gear; 272b. Driven bevel gear; 272c. Spur gear; 272d. Ring gear; 273. Ring drive frame; 273a. Insert rod;

[0030] 3. Porous sample tray; 31. Central axis stage; 31a. Annular baffle; 32. Annular hole holder; 32a. Insertion hole; 33. Through hole; 34. Limiting groove;

[0031] 4. Sampling organization. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To address the technical issues of multi-well sample trays requiring additional benchtop space and sample vials further encroaching on benchtop space for some solution samples, this invention provides a flow injection analyzer that extends beyond the benchtop via a telescopic component to support the multi-well sample tray, reducing benchtop space requirements. The multi-well sample tray employs a central axis for positioning and a rotating outer ring support. The central axis can hold sample vials, while the ring support holds sample tubes, satisfying the need for simultaneous placement of both. When not in use, the multi-well sample tray can be detached, stacked on top of the flow injection analyzer, and the support can be retracted to the bottom for easy storage.

[0034] Please see Figure 1-7 This utility model provides a flow injection analyzer, including an analyzer body 1, a telescopic support 2, and a porous sample tray 3. The telescopic support 2 includes a telescopic component 21 and a support base 22. The telescopic component 21 is installed at the bottom of the analyzer body 1, and the telescopic end of the telescopic component 21 is connected to the support base 22, driving the support base 22 to extend and retract along the axial direction of the analyzer body 1, so that the support base 22 has a first position hidden in the analyzer body 1 and a second position extending out of the analyzer body 1; the porous sample tray 3... The sample tray 3 includes a central axis platform 31 and an annular hole holder 32. When the sample tray 3 is in the first position of the support base 22, it is separated from the support base 22 and stacked on the top of the analyzer body 1. When the sample tray 3 is in the second position of the support base 22, it is mounted on the support base 22. Specifically, the central axis platform 31 is detachably mounted on the support base 22. The annular hole holder 32 is coaxially sleeved on the outside of the central axis platform 31 and rotatably connected to the central axis platform 31. The central axis platform 31 restricts the annular hole holder 32 from moving axially along the central axis platform 31.

[0035] In this embodiment, when the flow injection analyzer is needed, the support base 22 can be extended beyond the desktop via the telescopic component 21 to form a bottom support, and then the porous sample tray 3 can be installed without occupying the space of the experimental desktop. Furthermore, the sample bottle can be placed on the top of the central axis stage 31 on the porous sample tray 3, while the annular hole holder 32 has multiple test tube placement holes for placing test tubes, meeting the placement needs of different sample containers. When not in use, the porous sample tray 3 can be separated from the support base 22, the support base 22 can be hidden at the bottom of the analyzer body 1, and the porous sample tray 3 can be stacked on top of the analyzer body 1 for easy storage, and storage does not require occupying the space of the experimental desktop.

[0036] Furthermore, the extension length of the telescopic bracket 2 over the support base 22 can be adapted to accommodate multi-hole sample trays 3 of different diameters for installation, and can be adjusted according to actual needs.

[0037] It should be noted that the analyzer body 1 is the existing mature equipment body of the flow injection analyzer. The sample solution is injected into the carrier through a constant flow pump or peristaltic pump to form a continuous flow segment, which is mixed and reacted with the reagent. Finally, the absorbance or other signals are measured by an optical detector. This will not be elaborated on further here.

[0038] In one embodiment, for ease of directional mounting of the porous sample tray 3 and for positioning it on top of the analyzer body 1 during stacking, please refer to [reference needed]. Figure 2 and Figure 3 The top of the analyzer body 1 and the top of the support base 22 are both provided with connecting protrusions 23, and the central axis platform 31 is provided with a connecting component 26 for detachable connection with the connecting protrusions 23.

[0039] For details, please refer to Figure 2 and Figure 3 The connecting protrusion 23 has a limiting block 24 on its outer side for directional insertion. The top of the connecting protrusion 23 has a threaded hole 25 for detachable connection with the connecting assembly 26. The connecting assembly 26 includes a hand-tight bolt 261 for threaded connection with the threaded hole 25. The bottom of the central shaft platform 31 has a through hole 33 that matches the connecting protrusion 23. The through hole 33 has a limiting groove 34 that matches the limiting block 24. The connecting protrusion 23 is inserted into the inside of the through hole 33, and the limiting block 24 is inserted into the inside of the limiting groove 34 to form an insertion positioning. The hand-tight bolt 261 is inserted into the inside of the through hole 33 and extends downward to threadedly connect with the threaded hole 25 for locking installation.

[0040] During installation, first align the limiting block 24 with the limiting groove 34, insert the connecting protrusion 23 into the through hole 33, and insert the limiting block 24 into the limiting groove 34 to form a positioning; then rotate the hand-operated bolt 261 downwards to make the hand-operated bolt 261 threadedly connected to the threaded hole 25, and press the central shaft 31 downwards onto the support seat 22 to complete the installation; during disassembly, simply reverse the above steps.

[0041] In one embodiment, please refer to Figure 2 To facilitate extension, retraction, and locking, the telescopic assembly 21 includes a guide rail 211, a telescopic plate 212, and a locking assembly 213. The guide rail 211 is fixedly connected to the bottom of the analyzer body 1. The telescopic plate 212 is slidably connected to the inner side of the guide rail 211. The locking assembly 213 is mounted on the guide rail 211 and has a locking end for limiting the sliding of the telescopic plate 212 relative to the guide rail 211. The guide rail 211 guides the extension and retraction of the telescopic plate 212, and the locking assembly 213 locks it when it reaches the required extension length.

[0042] Specifically, the locking assembly 213 includes a locking bolt 213a, at least one of which is threaded to one side of the guide rail 211, extends through and to the inner side of the guide rail 211, and abuts against the telescopic plate 212. By rotating the locking bolt 213a, it moves inward, pressing the side of the telescopic plate 212 and restricting its slippage, thereby achieving the locking effect.

[0043] It is understandable that the telescopic component 21 may also adopt existing mature mechanisms with telescopic functions, such as hydraulic push rods, electric push rods, or lead screw guide pairs, and is not limited to one specific mechanism here.

[0044] In one embodiment, to match the automated sample introduction of a flow injection analyzer with an automated sample introduction system, a sampling mechanism 4 is installed on the analyzer body 1. The sampling mechanism 4 is a robotic arm with lifting and rotating functions, a mature existing mechanism, which drives the sampling needle to insert into the sample tube on the porous sample tray 3 for sampling. To match the sampling of the sampling mechanism, the porous sample tray 3 needs to be rotated and positioned. Specifically, a drive mechanism 27 is installed on the support base 22. The drive mechanism 27 has a drive end detachably connected to the annular orifice frame 32, which drives the annular orifice frame 32 to rotate at a certain angle, moving the sample tube to be sampled to be directly below the sampling needle of the sampling mechanism 4, and then matching the lifting and lowering of the robotic arm, inserting the sampling needle into the sample tube.

[0045] Understandably, the sampling needle is connected to a constant flow pump or peristaltic pump on the analyzer body 1 via tubing to take samples.

[0046] It should be noted that in some existing flow injection analyzers, the automatic sampling system is integrated into the analyzer body 1, and the sampling mechanism 4 is installed on the analyzer body 1, as shown in this embodiment; while some existing flow injection analyzers are equipped with a separate automatic sampler for automatic sampling, and the sampling mechanism 4 is installed on the separately equipped automatic sampler. These are all existing technologies and will not be described in detail here.

[0047] Furthermore, in order to achieve the purpose of driving the annular hole frame 32, the driving mechanism 27 includes a stepper motor 271, a gear set 272, and an annular drive frame 273. The input end of the gear set 272 is connected to the output shaft of the stepper motor 271, and the output end of the gear set 272 is coaxially connected to the annular drive frame 273. The top of the annular drive frame 273 is provided with a plug rod 273a, and the bottom of the annular hole frame 32 is provided with a plug hole 32a corresponding to the plug rod. The plug rod 273a is inserted into the plug hole 32a and driven by the stepper motor 271. Under the transmission of the gear set 272, the annular drive frame 273 is driven to rotate, and the annular drive frame 273 drives the plug rod 273a to push against the annular hole frame 32 to rotate.

[0048] Preferably, the number of insertion rods 273a and insertion holes 32a is three.

[0049] Specifically, in order to arrange the gear set 272 along the length of the telescopic plate 212, please refer to... Figure 5 and Figure 6 The gear set 272 includes a driving bevel gear 272a, a driven bevel gear 272b, a spur gear 272c, and a ring gear 272d. The driving bevel gear 272a is connected to the output shaft of the stepper motor 271. The driven bevel gear 272b meshes with the driving bevel gear 272a. The spur gear 272c is coaxially connected with the driven bevel gear 272b. The ring gear 272d is coaxially connected to the ring drive frame 273 and meshes with the spur gear 272c. The stepper motor 271 drives the driving bevel gear 272a to rotate, which in turn drives the driven bevel gear 272b to rotate. The driven bevel gear 272b then drives the spur gear 272c to rotate, which in turn drives the ring gear 272d to rotate. The ring gear 272d then drives the ring drive frame 273 to rotate.

[0050] Understandably, there is a cavity between the telescopic plate 212 and the support base 22. The stepper motor 271 and the gear set 272 are both located in this cavity, and are supported and rotated by the support member in the cavity. The conventional support structure in the art can be used, and will not be described in detail here.

[0051] In one embodiment, please refer to Figure 1The top of the central axis platform 31 is provided with an annular baffle 31a to protect the sample bottle placed on the top of the central axis platform 31 and reduce the probability of it falling off. The top of the central axis platform 31 is provided with an anti-slip layer to improve the anti-slip performance and prevent the sample bottle from sliding off the central axis platform 31.

[0052] To better understand this utility model, the following is combined with... Figures 1 to 6 The technical solution of this utility model is described in detail as follows: When in use, pull the telescopic plate 212 to pull out the support base 22, then tighten the locking bolt 213a for positioning, and then install the multi-hole sample tray 3. Move the insertion rod 273a to the initial position, and align and insert the connecting protrusion 23 and the limiting block 24 with the through hole 33 and the limiting groove 34 respectively, and align and insert the insertion rod 273a with the insertion hole 32a. Then thread the hand-tight bolt 261 to the threaded hole 25 to lock the central axis platform 31 onto the support base 22, completing the installation. When not in use, loosen the hand-tight bolt 261, remove the multi-hole sample tray 3, and then install it onto the connecting protrusion 23 on the top of the analyzer body 1. Then loosen the locking bolt 213a, push the telescopic plate 212 back, hide the support base 22 to the bottom of the analyzer body 1, and finally tighten the locking bolt 213a to complete the storage.

[0053] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A flow injection analyzer characterized in that, include: The analyzer itself; A telescopic support includes a telescopic component and a support base. The telescopic component is installed at the bottom of the analyzer body, and the telescopic end of the telescopic component is connected to the support base, driving the support base to extend and retract along the axial direction of the analyzer body. as well as A porous sample tray includes a central axis stage and an annular hole frame. The central axis stage is detachably mounted on the support base, and the annular hole frame is coaxially rotatably connected to the outside of the central axis stage.

2. The flow injection analyzer of claim 1, wherein, The top of the analyzer body and the top of the support base are both provided with connecting protrusions, and the central axis platform is provided with a connecting component for detachable connection with the connecting protrusions.

3. The flow injection analyzer of claim 2, wherein, The connecting protrusion has a limiting block on its outer side, and a threaded hole is provided on the top of the connecting protrusion; the connecting assembly includes a hand-operated bolt, and a through hole matching the connecting protrusion is provided on the bottom of the central shaft platform. A limiting groove matching the limiting block is provided on the through hole. The connecting protrusion is inserted into the inside of the through hole, the limiting block is inserted into the inside of the limiting groove, and the hand-operated bolt is inserted into the inside of the through hole and extends downward to be threadedly connected to the threaded hole.

4. The flow injection analyzer of claim 1, wherein, The telescopic assembly includes a guide rail, a telescopic plate, and a locking assembly. The guide rail is fixedly connected to the bottom of the analyzer body, the telescopic plate is slidably connected to the inner side of the guide rail, and the locking assembly is mounted on the guide rail and has a locking end for limiting the sliding of the telescopic plate relative to the guide rail.

5. The flow injection analyzer of claim 4, wherein, The locking assembly includes a locking bolt, at least one of which is threaded to one side of the guide rail, extends through and to the inside of the guide rail, and abuts against the telescopic plate.

6. The flow injection analyzer of claim 1, wherein, A drive mechanism is installed on the support base. The drive mechanism has a drive end that is detachably connected to the annular hole frame, and drives the annular hole frame to rotate at a fixed angle.

7. The flow injection analyzer of claim 6, wherein, The drive mechanism includes a stepper motor, a gear set, and a ring drive frame. The input end of the gear set is connected to the output shaft of the stepper motor, and the output end of the gear set is coaxially connected to the ring drive frame. The top of the ring drive frame is provided with a plug rod, and the bottom of the ring drive frame is provided with plug holes corresponding to the plug rod.

8. The flow injection analyzer of claim 7, wherein, The gear set includes a driving bevel gear, a driven bevel gear, a spur gear, and a ring gear. The driving bevel gear is connected to the output shaft of the stepper motor. The driven bevel gear meshes with the driving bevel gear. The spur gear is coaxially connected with the driven bevel gear. The ring gear is coaxially connected to the ring drive frame and meshes with the spur gear.

9. The flow injection analyzer of claim 1, wherein, The top of the central axis platform is provided with an annular baffle.

10. The flow injection analyzer of claim 1, wherein, The top of the central axis platform is provided with an anti-slip layer.

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