CN220399286U

CN220399286U - Liquid pumping device of chemiluminescent instrument

Info

Publication number: CN220399286U
Application number: CN202321833908.1U
Authority: CN
Inventors: 路晓楠
Original assignee: Hangzhou Ruishi Biotechnology Co ltd
Current assignee: Hangzhou Ruishi Biotechnology Co ltd
Priority date: 2023-07-12
Filing date: 2023-07-12
Publication date: 2024-01-26
Anticipated expiration: 2033-07-12

Abstract

The utility model relates to the technical field of chemiluminescence detection and provides a liquid extraction device of a chemiluminescent instrument, which comprises a fixed block, a needle tube capable of sliding up and down, a limiting block for limiting the needle tube on the fixed block, a first spring for elastically connecting the limiting block with the fixed block, and a liquid pump joint fixed at the top of the needle tube, wherein the tail end of the needle tube is provided with a movable joint capable of moving at multiple angles, and the movable joint is elastically connected with the needle tube through a second spring; according to the utility model, when the needle tube is in an inclined state and descends, the liquid suction disc is contacted with the cup bottom before the needle tube is in an inclined state, and the movable joint can compress the second spring towards the inclined side of the needle tube along with the pressing of the needle tube, so that the movable joint rotates at the bottom of the needle tube, namely, the needle tube can still keep horizontal fit with the cup bottom in an inclined state, residual liquid at the cup bottom can be sucked, the cup bottom is prevented from being left, and the problem that the bottom of the liquid suction needle cannot be completely fit with the cup bottom of a reaction cup in the prior art is solved.

Description

Liquid pumping device of chemiluminescent instrument

Technical Field

The utility model relates to the technical field of chemiluminescence detection, in particular to a liquid pumping device of a chemiluminescent instrument.

Background

Chemiluminescent-based labeling immunoassays, also known as chemiluminescent-based immunoassays, are immunoassays in which antigens or antibodies are directly labeled with a chemiluminescent agent. Chemiluminescent immunoassay devices comprise two components, namely an immunoreaction system and a chemiluminescent assay system. The chemiluminescent instrument is multifunctional molecular imaging analysis equipment based on chemiluminescent labeling immunoassay and integrated new-generation real-time gel imaging equipment. Can complete the full-function molecular imaging analysis of ultraviolet, white light, chemiluminescence, double infrared fluorescence and the like. The method can be used for carrying out full-automatic image acquisition and qualitative and quantitative analysis on samples such as protein electrophoresis, nucleic acid electrophoresis, blotting membrane, X-ray film, tissue section, micro-pore plate, culture dish and the like.

After chemiluminescent detection is carried out through a chemiluminescent instrument, the liquid in the reaction cup is required to be pumped through an instrument operation liquid pumping device, and waste liquid is discharged, so that the liquid in the reaction cup is prevented from influencing the detection of other reaction cups.

By way of retrieval, publication No. CN203965328U discloses an extractor for chemiluminescent assay devices comprising: a driving rod; the lifting frame is fixedly connected with the driving rod and can move up and down in the vertical direction under the driving of the driving rod, a containing groove is formed in the lifting frame, and a through hole is formed in the bottom of the containing groove; the fixed block is fixedly arranged on the lifting frame and comprises a main body and a buffer part connected with the main body, the buffer part is positioned in the accommodating groove, a through hole opposite to the through hole is formed in the fixed block, and a step part is further arranged in the through hole; the liquid suction needle is movably arranged through the through hole and the through hole, a limiting piece is fixedly arranged on the liquid suction needle, and the limiting piece abuts against the bottom of the accommodating groove; and the elastic piece is sleeved on the liquid suction needle, one end of the elastic piece is propped against the step part, and the other end of the elastic piece is propped against the limiting piece. According to the liquid suction device, as the elastic piece is additionally arranged between the lifting frame and the liquid suction needle, the liquid suction needle is not in hard contact with the cup bottom, so that waste liquid can be completely pumped away, light pollution is reduced, and detection accuracy is improved.

However, the above-mentioned liquid extraction device still has the following problems: in the actual operation process, due to the problem of placing the reaction cup or the certain precision error of the lifting frame, the fixed block or the installation of the liquid suction needle, a certain angle difference exists between the liquid suction needle and the cup bottom of the reaction cup in the vertical direction easily, so that when the liquid suction needle is driven to descend, the bottom of the liquid suction needle cannot be completely attached to the cup bottom of the reaction cup, and then a certain amount of liquid still exists in the cup bottom of the reaction cup when waste liquid is pumped, and the subsequent detection result is influenced.

Disclosure of Invention

The utility model provides a liquid pumping device of a chemiluminescent instrument, which solves the problem that the bottom of a liquid suction needle cannot be completely attached to the bottom of a reaction cup in the prior art.

The technical scheme of the utility model is as follows: the utility model provides a chemiluminescent appearance's drawing liquid device, includes the fixed block, can reciprocate the gliding needle tubing, makes the stopper that the needle tubing limited to be located the fixed block, with stopper and fixed block elastic connection's first spring and be fixed in the liquid pump joint at needle tubing top, the end of needle tubing is provided with the movable joint that can multi-angle activity, the movable joint passes through second spring and needle tubing elastic connection, the end of movable joint is fixed with the liquid absorption dish that still can laminate with the bottom of the cup when the needle tubing inclines.

Preferably, the liquid suction disc comprises a disc shell and a conical current guide body fixed in the disc shell, and a liquid inlet cavity is formed in the disc shell at the periphery of the conical current guide body.

Preferably, the bottom of the disc shell is fixedly provided with liquid inlets which are distributed annularly around the conical current-conducting body and are communicated with the liquid inlet cavity, and the top of the disc shell is provided with a through hole communicated with the liquid inlet cavity.

Preferably, the movable joint comprises a connecting pipe, an upper conical cavity section and a lower conical cavity section communicated with the upper conical cavity section are arranged at the bottom of the inner cavity of the connecting pipe, and the lower conical cavity section is communicated with the through hole.

Preferably, the diameter of the top opening of the upper conical cavity section is equal to the diameter of the inner cavity of the upper part of the connecting pipe, the diameter of the upper conical cavity section gradually decreases from top to bottom, the diameter of the lower conical cavity section gradually increases from top to bottom, a ball plug is arranged in the upper conical cavity section, the diameter of the ball plug is larger than the diameter of the intersection of the upper conical cavity section and the lower conical cavity section, and the diameter of the ball plug is smaller than the diameter of the top opening of the upper conical cavity section.

Preferably, the top of connecting pipe is fixed with down the pressure disk, the top of pressure disk is fixed with the stay tube down, the top of stay tube is fixed with the bulb, stay tube and bulb are hollow structure, set up on the pressure disk down with stay tube, bulb inner chamber communicating guide hole.

Preferably, the inner side of the needle tube is sequentially provided with a tube cavity, a through cavity and a spherical movable groove which are communicated from top to bottom, the diameter of the tube cavity is smaller than that of the through cavity, and the ball head is movably embedded in the spherical movable groove.

Preferably, an upper pressure plate is fixed at the tail end of the needle tube, the second spring is sleeved on the outer side of the supporting tube, and two ends of the second spring are respectively abutted to the upper pressure plate and the lower pressure plate.

The working principle and the beneficial effects of the utility model are as follows:

1. according to the utility model, when the needle tube is in an inclined state and descends, the liquid suction disc is contacted with the cup bottom first, and the movable joint can compress the second spring towards the inclined side of the needle tube along with the pressing of the needle tube, so that the movable joint rotates at the bottom of the needle tube, namely, the liquid suction disc can still be horizontally attached to the cup bottom under the inclined state of the needle tube, residual liquid at the cup bottom can be sucked, the cup bottom is prevented from being left, and the problem that the bottom of the liquid suction needle cannot be completely attached to the cup bottom of a reaction cup in the prior art is solved;

2. according to the utility model, the upper conical cavity section and the lower conical cavity section communicated with the upper conical cavity section are arranged at the bottom of the inner cavity of the connecting pipe, and the ball plug is arranged in the upper conical cavity section, so that when an external liquid pump works to generate suction, the ball plug can move upwards to enable the upper conical cavity section and the lower conical cavity section to be communicated up and down, liquid pumped by the liquid suction disc can smoothly enter the inner cavity of the connecting pipe, and when the suction is stopped, the ball plug automatically descends under the action of gravity to seal the pipe cavity.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic view of a liquid extraction device of a chemiluminescent apparatus of the present utility model;

FIG. 2 is a schematic view of a liquid-pumping device of a chemiluminescent apparatus according to the present utility model at another view angle;

FIG. 3 is a schematic view of a cross-sectional structure of a needle tube according to the present utility model in a normal posture;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A;

FIG. 5 is an enlarged schematic view of the structure of FIG. 3B;

FIG. 6 is a schematic view of a cross-sectional structure of a needle tube according to the present utility model in an inclined position;

in the figure: 1. a needle tube; 11. an upper platen; 12. a spherical movable groove; 13. a cavity is communicated; 14. a lumen; 2. a limiting block; 3. a first spring; 4. a liquid pump joint; 5. a movable joint; 51. a connecting pipe; 511. an upper conical cavity section; 512. a lower conical cavity section; 52. a lower platen; 521. a guide hole; 53. a support tube; 54. ball head; 6. a liquid suction disc; 61. a disc housing; 611. a liquid inlet; 612. a through hole; 62. a conical flow conductor; 7. a second spring; 8. ball plug.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, 2 and 3, the present embodiment provides a technical solution: the utility model provides a liquid extraction device of chemiluminescence appearance, including the fixed block, can reciprocate the gliding needle tubing 1, make the stopper 2 of needle tubing 1 spacing on the fixed block, with stopper 2 and fixed block elastic connection's first spring 3, and be fixed in the liquid pump joint 4 at needle tubing 1 top, the fixed block can consult the contrast file, the fixed block passes through the fix with screw on the crane, and crane sliding arrangement is on the chemiluminescence appearance, the crane bottom has the actuating lever through the fix with screw, drive arrangement who drives the actuating lever and reciprocate is set up on the chemiluminescence appearance, and then realize the osculum of needle tubing 1, can get into in the reaction cup and accomplish the action of drawing liquid, liquid pump joint 4 can be connected with the suction pump, be used for the extraction of liquid, needle tubing 1's end is provided with the movable joint 5 that can multi-angle moves, movable joint 5 is fixed with 1 elastic connection through second spring 7, the liquid suction disc 6 that still can laminate with the cup bottom when needle tubing 1 inclines, under normal condition, 1 keeps the vertical state that is shown in figure 3 under this state, can accomplish the similar drawing liquid of contrast file bottom through the fix with screw, drive arrangement that drives the actuating lever goes up and down at the moment, and can make the cup bottom 1 incline to the cup bottom 1 when the inclined state that the needle tubing 1 is in order to make the cup bottom 1, and then the liquid suction disc is left in the state that can be in the inclined state, the cup 1 can be in order to make the bottom 1 is left to be in the contact with the cup 1, and the cup 1 is left.

Referring to fig. 3 and 4, the liquid absorbing tray 6 includes a tray shell 61 and a conical current-conducting body 62 fixed in the tray shell 61, wherein a liquid inlet cavity is formed in the tray shell 61 at the periphery of the conical current-conducting body 62, a liquid inlet 611 which is distributed annularly around the conical current-conducting body 62 and is communicated with the liquid inlet cavity is fixed at the bottom of the tray shell 61, a through hole 612 which is communicated with the liquid inlet cavity is formed at the top of the tray shell 61, and after the tray shell 61 descends to be contacted with the bottom of a cup, residual liquid at the bottom of the cup can enter the through hole 612 through the liquid inlet cavity under the suction of an external liquid pump, and then is continuously discharged through the through hole 612.

Referring to fig. 3 and 5, the movable joint 5 includes a connecting pipe 51, an upper conical cavity section 511 and a lower conical cavity section 512 communicating with the upper conical cavity section 511 are provided at the bottom of the inner cavity of the connecting pipe 51, the lower conical cavity section 512 communicates with the through hole 612, the top diameter of the upper conical cavity section 511 is equal to the inner cavity diameter of the upper part of the connecting pipe 51, the diameter of the upper conical cavity section 511 gradually decreases from top to bottom, the diameter of the lower conical cavity section 512 gradually increases from top to bottom, a ball plug 8 is provided in the upper conical cavity section 511, the diameter of the ball plug 8 is larger than the diameter of the intersection between the upper conical cavity section 511 and the lower conical cavity section 512, and the diameter of the ball plug 8 is smaller than the top diameter of the upper conical cavity section 511, when the external liquid pump works to generate suction force, the ball plug 8 can move upwards to enable the upper conical cavity section 511 and the lower conical cavity section 512 to be communicated up and down, so that the liquid of the liquid suction disc 6 can smoothly enter the inner cavity of the connecting pipe 51.

Referring to fig. 3 and 5, a lower platen 52 is fixed at the top of the connecting tube 51, a supporting tube 53 is fixed at the top of the lower platen 52, a ball head 54 is fixed at the top of the supporting tube 53, the supporting tube 53 and the ball head 54 are hollow structures, a guide hole 521 is formed in the lower platen 52 and communicated with the inner cavities of the supporting tube 53 and the ball head 54, liquid in the inner cavity of the connecting tube 51 can continuously drain upwards through the guide hole 521 and the inner cavities of the supporting tube 53 and the ball head 54 sequentially, a tube cavity 14, a through cavity 13 and a spherical movable groove 12 which are vertically penetrated are sequentially formed in the inner side of the needle tube 1 from top to bottom, the diameter of the tube cavity 14 is smaller than that of the through cavity 13, the movable range of the bore of the ball head 54 is enlarged by the through cavity 13, the influence on the liquid flow when the ball head 54 moves to a large inclined angle is avoided, the ball head 54 is movably embedded in the spherical movable groove 12, the connecting tube 51 can freely move around the ball head 54 to adjust the angle of the lower liquid absorbing disc 6, the liquid absorbing disc 6 can be attached to the cup bottom, the end of the needle tube 1 is fixedly provided with an upper 11, a second spring 7 is sleeved on the outer side of the inner cavity of the supporting tube 53, the pressure plates are respectively, the two ends of the pressure plates 7 are respectively abutted against the upper 11 and lower platen 52.

The working principle and the use flow of the embodiment are as follows: under normal state, the needle tube 1 is kept in a vertical state shown in fig. 3, the liquid suction action similar to that of a comparison document can be completed in the state, when the needle tube 1 is in an inclined state, at the moment, when the needle tube 1 descends, the liquid suction disc 6 is contacted with the cup bottom in advance, along with the pressing of the needle tube 1, the movable joint 5 can compress the second spring 7 to the inclined side of the needle tube 1, the movable joint 5 can further rotate to the state shown in fig. 6 at the bottom of the needle tube 1, the liquid suction disc 6 can still keep horizontal fit with the cup bottom under the inclined state of the needle tube 1, residual liquid at the cup bottom can be sucked, and the residual phenomenon at the cup bottom is prevented;

under the suction of an external liquid pump, the ball plug 8 can move upwards to vertically penetrate the upper conical cavity section 511 and the lower conical cavity section 512, so that residual liquid at the bottom of the cup can enter the through hole 612 through the liquid inlet cavity, then smoothly enter the inner cavity of the connecting pipe 51 through the through hole 612, enter the pipe cavity 14 through the guide hole 521, the supporting pipe 53, the inner cavity of the ball head 54 and the through cavity 13, finally be discharged outwards for collection, the absorption of the residual liquid at the bottom of the cup is realized, the light pollution caused by the residual liquid is reduced, and the detection accuracy is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a chemiluminescent appearance's drawing liquid device, includes fixed block, can gliding needle tubing (1) from top to bottom, makes stopper (2) on the fixed block of needle tubing (1) spacing, first spring (3) with stopper (2) and fixed block elastic connection to and be fixed in liquid pump joint (4) at needle tubing (1) top, its characterized in that, the end of needle tubing (1) is provided with movable joint (5) that can multi-angle activity, movable joint (5) pass through second spring (7) and needle tubing (1) elastic connection, the end of movable joint (5) is fixed with liquid suction disc (6) that still can laminate with the bottom of the cup when needle tubing (1) slope.

2. The liquid suction device of a chemiluminescent apparatus according to claim 1 wherein the liquid suction disc (6) comprises a disc housing (61) and a conical flow conductor (62) fixed in the disc housing (61), wherein a liquid inlet cavity is formed in the disc housing (61) at the periphery of the conical flow conductor (62).

3. The liquid pumping device of the chemiluminescent apparatus as set forth in claim 2, wherein the bottom of the tray housing (61) is fixed with liquid inlets (611) annularly distributed around the conical current collector (62) and communicated with the liquid inlet cavity, and a through hole (612) communicated with the liquid inlet cavity is opened at the top of the tray housing (61).

4. A chemiluminescent apparatus according to claim 3 wherein the movable joint (5) comprises a connecting tube (51), an upper conical cavity section (511) and a lower conical cavity section (512) communicated with the upper conical cavity section (511) are provided at the bottom of the inner cavity of the connecting tube (51), and the lower conical cavity section (512) is communicated with the through hole (612).

5. The liquid pumping device of a chemiluminescent apparatus of claim 4 wherein a top diameter of the upper conical cavity section (511) is equal to a top inner cavity diameter of the connecting pipe (51), the diameter of the upper conical cavity section (511) gradually decreases from top to bottom, the diameter of the lower conical cavity section (512) gradually increases from top to bottom, a ball plug (8) is arranged in the upper conical cavity section (511), the diameter of the ball plug (8) is larger than a diameter of an intersection of the upper conical cavity section (511) and the lower conical cavity section (512), and the diameter of the ball plug (8) is smaller than the top diameter of the upper conical cavity section (511).

6. The liquid pumping device of the chemiluminescent apparatus of claim 5 wherein a lower platen (52) is fixed at the top of the connecting tube (51), a supporting tube (53) is fixed at the top of the lower platen (52), a ball head (54) is fixed at the top of the supporting tube (53), the supporting tube (53) and the ball head (54) are hollow structures, and guide holes (521) communicated with the inner cavities of the supporting tube (53) and the ball head (54) are formed in the lower platen (52).

7. The liquid pumping device of the chemiluminescent apparatus of claim 6 wherein the inner side of the needle tube (1) is sequentially provided with a tube cavity (14), a through cavity (13) and a spherical movable groove (12) from top to bottom, wherein the diameter of the tube cavity (14) is smaller than that of the through cavity (13), and the ball head (54) is movably embedded in the spherical movable groove (12).

8. The liquid pumping device of the chemiluminescent apparatus of claim 6 wherein an upper platen (11) is fixed at the end of the needle tube (1), the second spring (7) is sleeved outside the support tube (53), and two ends of the second spring (7) are respectively abutted against the upper platen (11) and the lower platen (52).