CN219978316U - Biochemical analyzer - Google Patents

Abstract

The utility model discloses a biochemical analyzer, which comprises a detector body, wherein the upper surface of the detector body is provided with a reagent disk, a sample disk, a reagent needle structure and a reaction disk, the sample disk is provided with a sample thread opening, the upper end surface of the detector body is provided with a reagent needle structure, and the arranged reagent needle is wrapped in a vertical sliding cylinder and a rubber cover I when not in use, so that bacteria in the air are effectively prevented from being stuck on the reagent needle, the bacteria in the air are prevented from influencing experimental results, experimental data are more accurate, and when the detector body is relatively rotated by a cover plate arranged to be closed, an upper rubber sealing edge and a lower rubber sealing edge are mutually sealed and attached, so that a solution sample in the reagent box, the reaction disk and the sample thread opening is effectively prevented from being infected by bacteria, the influence of the bacteria in the air on the experimental results is prevented, and the experimental data are more accurate.

Description

Biochemical analyzer

Technical Field

The utility model relates to the technical field of medicine detection, in particular to a biochemical analyzer.

Background

The biochemical analyzer is generally referred to as a biochemical analyzer, and is an instrument for measuring a specific chemical component in body fluid by adopting a photoelectric colorimetric principle, and is widely used in hospitals, epidemic prevention stations and family planning service stations at all levels due to high measurement accuracy and small consumption of reagent, but when the conventional reaction end point detector is used for experimental detection, a reagent needle is exposed in the air, and dust, bacteria and fine particles in the air are adhered on the reagent needle, so that the detection structure of the device is affected.

Disclosure of Invention

In order to solve at least one technical problem existing in the background art, the utility model provides a biochemical analyzer.

The utility model provides a biochemical analyzer, which comprises a detector body, wherein a reagent disk, a sample disk, a reagent needle structure and a reaction disk are arranged on the upper surface of the detector body, a sample threaded port is arranged on the sample disk, the reagent needle structure comprises a lifting rotating arm movably connected with the detector body, a lifting rotating shaft is fixedly arranged on the lower surface of one end of the lifting rotating arm, the lifting rotating arm is in lifting connection with the lifting rotating shaft, the lifting rotating shaft is in rotating connection with the detector body, a reagent needle is vertically and fixedly arranged on the lower surface of the end part of the lifting rotating arm, a fixed sliding column is fixedly arranged on the lower surface of one end of the lifting rotating arm, a plurality of second vertical sliding grooves which are arranged at equal intervals along the circumference are arranged on the edge of the fixed sliding column, a sliding block which is arranged at equal intervals along the circumference is fixedly arranged on the inner wall of the top end of the vertical sliding column, a limit ring I is fixedly arranged on the edge of the bottom end of the vertical sliding column, a rubber cover is arranged at the bottom end of the vertical sliding column, a push sleeve is fixedly arranged on the bottom end of the vertical sliding column, a push sleeve is fixedly connected with the limit sleeve, a push sleeve is arranged on the bottom end surface of the push sleeve, and a push sleeve is fixedly arranged on the push sleeve;

when the device is in a non-working state, the sliding block is positioned at the bottommost end in the second vertical sliding groove, the reagent needle is completely positioned in the vertical sliding cylinder, and the rubber cover is positioned below the reagent needle.

In the using process of the device, the lifting rotating arm rotates by taking the lifting rotating shaft as the axis, so that the reagent needle absorbs the reagent in the reagent box and the sample in the sample tray and is injected into the reaction tray for reaction, when the reagent needle moves to the position above the reagent box, the position above the reaction tray or the position above the sample screw thread opening, the lifting rotating arm descends to drive the reagent needle to descend, so that the reagent needle stretches into the interior of the reagent box screw thread opening, in the descending process of the reagent needle, the first limiting ring and the first port of the rubber cover are extruded on the port surfaces of the reagent box screw thread opening, the reaction tray and the sample screw thread opening, then the first vertical sliding barrel, the first limiting ring and the first rubber cover stop moving, the lifting rotating arm continuously drives the reagent needle to move downwards, so that the thrust spring is compressed, the vertical sliding barrel slides upwards relative to the fixed sliding column, the sliding block slides upwards in the second vertical sliding groove, then the reagent needle passes through the first connecting through hole and stretches into the interior of the threaded opening of the reagent box, the area of the third connecting through hole is enlarged by the reagent needle, when the reagent needle stretches into the interior of the reagent box through the threaded opening of the reagent box, reagent solution in the interior of the reagent box can be sucked up, then the lifting rotary arm drives the reagent needle to automatically lift up, in the process of automatically lifting the reagent needle, the vertical sliding cylinder is pushed to slide downwards relative to the fixed sliding column under the elastic restoring force of the thrust spring, during the process, the sliding block slides downwards in the second vertical sliding groove, the vertical sliding cylinder is restored to the initial position relative to the fixed sliding column, the reagent needle is retracted into the interior of the vertical sliding cylinder, the first connecting through hole is restored to the initial size, the reagent needle is wrapped in the interior of the vertical sliding cylinder and the first rubber cover, thereby effectively preventing dust, bacteria and fine particles in air from adhering to the reagent needle, therefore, dust, bacteria and fine particles in the air are prevented from affecting the experimental result, and experimental data are more accurate.

In this embodiment, one side on the detector body articulates there is the apron, the fixed rubber sealing edge that is equipped with in port department of apron, the fixed rubber sealing edge that is equipped with in edge of the up end of detector body works as rotate between the apron with when the detector body is closed, down rubber sealing edge with the adaptation laminating between the last rubber sealing edge makes and seals each other laminating between last rubber sealing edge and the lower rubber sealing edge when the relative rotation detector body of apron is closed to effectually prevent that solution sample in kit, reaction dish and the sample screw mouth from receiving bacterial infection, thereby prevent dust, bacterium and the fine particle in the air from producing the influence to the result of experiment, make experimental data more accurate.

In this embodiment, inlay on the apron and be equipped with the glass cover, when the closure prevents the bacterium between apron and the detector body, the inside working process of apron is watched to the accessible glass cover to prevent dust, bacterium and the fine particle in the air to the result of experiment produces the influence, makes experimental data more accurate.

In this embodiment, the inside of reagent dish is equipped with a plurality of reagent boxes that are circumference equidistant range, reagent box screw thread mouth has been seted up to the upper end of reagent box, the inside threaded connection of reagent box screw thread mouth has screw thread circle one, the fixed spacing ring three that is equipped with in edge of screw thread circle upper end, be equipped with the rubber cover three on the spacing ring three, the centre of the rubber cover three runs through and is equipped with the connection through-hole three, works as the reagent needle follows the lift rocking arm is moved to reagent box screw thread mouth top, connection through-hole one is located connect through-hole three directly over, the edge of three bottom of rubber cover is equipped with draw-in groove three, the three joint of spacing ring is inside the draw-in groove three, seals the up end at reagent box screw thread mouth through the rubber cover three that set up, has realized effectual inside and outside with reagent box, has effectually prevented that the bacterium from falling into the inside of reagent box to prevent that dust, bacterium and fine granule from producing the influence to experimental result in the air, make data more accurate.

In this embodiment, sample screw thread mouth internal thread is connected with the screw thread circle two, be fixed on the edge of screw thread circle two upper ends and be equipped with the spacing ring two, be equipped with the rubber cover two on the spacing ring two, the centre of the rubber cover two runs through and is equipped with the connection through-hole two, works as the reagent needle follows the lift rocking arm removes to sample screw thread mouth top, the connection through-hole one is located directly over the switch-on hole two, fixed being equipped with draw-in groove two on the edge of rubber cover two bottom, the spacing ring two card is established in draw-in groove two insidely, seals at the up end of sample dish through the rubber cover two that set up, has realized effectually isolating inside and outside the sample dish with the sample dish that the bacterium has fallen into to prevent dust, bacterium and the fine granule in the air from producing the influence to the result of experiment, make experimental data more accurate.

In this embodiment, on the apron with the fixed pivot pole that is equipped with in articulated one side of detector body, the pivot pole is located keep away from on the apron with the articulated department of detector body's position, the both ends of detector body are all fixed and are equipped with first vertical spout, first vertical spout is located be close to one side of rubber sealing strip on the detector body, the pivot pole with be connected with the connecting rod between the first vertical spout, the one end of connecting rod runs through and is equipped with the pivot hole, the pivot pole passes the pivot hole with rotate between the connecting rod and be connected, the connecting rod keep away from the one end of pivot hole is fixed to be equipped with the connecting axle, the connecting axle is located inside the first vertical spout with sliding connection between the first vertical spout, be equipped with the handle on the apron, through holding the handle pulling apron and rotate on the detector body, realize the apron and close and open on the detector body, when pulling open between the relative detector body of apron, the connecting rod rotates on the pivot pole, the connecting axle slides to first vertical spout in first vertical spout, the connecting axle is located the position of the relative position of connecting rod when the relative position of the measuring instrument body is close to the position, and is close to the position when the connecting rod is formed between the relative position of the connecting rod, and is close to the position when the position is close to the position of the connecting rod, and is suitable for rotating the position to be used to be connected between the relative position of the connecting rod and the position when the position is shown in the position to be relatively between the position and the position of the vertical.

The beneficial effects brought by the utility model are as follows:

1. the reagent needle is wrapped in the vertical sliding cylinder and the first rubber cover when not in use, so that bacteria in the air are effectively prevented from being stuck on the reagent needle, the influence of the bacteria in the air on the experimental result is prevented, and experimental data are more accurate;

2. when the relative rotation detector body of apron through setting up is closed, make and go up the mutual sealing laminating between rubber sealing edge and the lower rubber sealing edge to effectually prevented that solution sample in kit, reaction dish and the sample screw thread mouth from receiving bacterial infection, thereby prevent the bacterium in the air to the result of experiment from producing the influence, make experimental data more accurate.

3. Through the up end of the three seals of rubber cover that set up at the kit screw thread mouth, realized effectually isolated the inside and the outside of kit, effectually prevented that the bacterium from falling into the inside of kit to prevent that bacterium in the air from producing the influence to the result of experiment, make experimental data more accurate.

Drawings

FIG. 1 is a schematic diagram of one aspect of the present disclosure;

FIG. 2 is an exploded view of a partial structure of the present disclosure;

FIG. 3 is an enlarged view of the structure at A of the present disclosure;

FIG. 4 is an enlarged view of the structure at B of the present disclosure;

FIG. 5 is a structural exploded view of the reagent needle structure of the present disclosure;

fig. 6 is an enlarged view of the structure at C of the present disclosure.

10. A detector body; 11. a lower rubber sealing edge; 12. a cover plate; 13. a rubber sealing edge is arranged; 14. a handle; 20. a reagent tray; 21. a kit; 22. a threaded port of the kit; 23. a first thread ring; 24. a limiting ring III; 25. a third rubber cover; 26. a third connecting through hole; 27. a clamping groove III; 30. a sample tray; 31. a sample threaded port; 32. a second thread ring; 33. a second limiting ring; 34. a second rubber cover; 35. a second connecting through hole; 36. a clamping groove II; 41. a rotating shaft lever; 42. a first vertical chute; 43. a connecting rod; 44. a rotation shaft hole; 45. a connecting shaft; 50. a reagent needle structure; 51. lifting rotating arms; 52. a reagent needle; 53. fixing the sliding column; 54. a second vertical chute; 55. a thrust spring; 56. a vertical slide cylinder; 57. a slide block; 58. a first limiting ring; 59. a lifting rotating shaft; 60. a first rubber cover; 61. a clamping groove I; 62. and connecting the first through hole.

Detailed Description

It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features in the embodiments may be combined with each other; the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled 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.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, unless explicitly stated and limited otherwise, the term "coupled" is to be interpreted broadly, as for example, the term "coupled" may be a fixed connection, a removable connection, or an integral body; the mechanical connection and the transmission connection can be adopted; either directly, indirectly through intermediaries, or through a communication between two elements or an interaction between the two elements.

Referring to fig. 1-5, the biochemical analyzer provided by the utility model comprises a detector body 10, a reagent disk 20, a sample disk 30, a reagent needle structure 50 and a reaction disk 80 are arranged on the upper surface of the detector body 10, a sample threaded port 31 is arranged on the sample disk 30, the reagent needle structure 50 comprises a lifting rotating arm 51 movably connected with the detector body 10, a lifting rotating shaft 59 is fixedly arranged on the lower surface of one end of the lifting rotating arm 51, the lifting rotating arm 51 is in lifting connection with the lifting rotating shaft 59, the lifting rotating shaft 59 is in rotary connection with the detector body 10, a reagent needle 52 is vertically and fixedly arranged on the lower surface of one end of the lifting rotating arm 51, a fixed sliding column 53 is fixedly arranged on the lower surface of one end of the lifting rotating arm 51, a plurality of second vertical sliding grooves 54 which are arranged at equal intervals along the circumference are arranged on the edge of the fixed sliding column 53, a sliding block 57 which is fixedly arranged on the inner wall of the top end of the vertical sliding column 56, a sliding block 57 which is positioned at equal intervals is fixedly arranged on the inner wall of the top end of the detector body 10, a rubber sleeve 60 which is fixedly arranged on the bottom end surface of the fixed sliding column 53, a rubber sleeve 60 which is fixedly arranged on the bottom end surface of the fixed sliding column 55, a rubber sleeve 55 which is fixedly arranged on the sliding sleeve 55, a thrust sleeve 60 which is fixedly arranged on the bottom end surface of the sliding sleeve, a thrust sleeve 60 which is fixedly arranged on the sliding sleeve 55, the top end of the thrust spring 55 is pressed on the lower end surface of the lifting rotating arm 51;

in the non-operating state, the slider 57 is located at the bottommost end in the second vertical chute 54, the reagent needle 52 is completely located inside the vertical slide tube 56, and the first rubber cover 60 is located below the reagent needle 52.

In the use process of the device, the lifting rotating arm 51 rotates by taking the lifting rotating shaft 59 as the axis, so that the reagent needle 52 sucks the reagent in the reagent box 21 and the sample in the sample tray 30 and is injected into the reaction tray 80 for reaction, when the reagent needle 52 moves to the position above the reagent box 21, the position above the reaction tray 80 or the position above the sample screw hole 31, the lifting rotating arm 51 descends to drive the reagent needle 52 to descend, the reagent needle 52 stretches into the interior of the reagent box screw hole 22, in the descending process of the reagent needle 52, the first limiting ring 58 and the first limiting ring 60 are extruded on the surfaces of the reagent box screw hole 22, the reaction tray 80 and the sample screw hole 31, then the vertical sliding cylinder 56, the first limiting ring 58 and the first limiting ring 60 stop moving, the lifting rotating arm 51 continues to drive the reagent needle 52 to move downwards to compress the thrust spring 55, the vertical slide cylinder 56 slides upwards relative to the fixed slide column 53, the slide block 57 slides upwards in the second vertical slide groove 54, then the reagent needle 52 penetrates through the first connecting through hole 62 to extend into the inside of the reagent box threaded opening 22, the reagent needle 52 expands the area of the third connecting through hole 26, reagent solution in the reagent box 21 can be sucked up when the reagent needle 52 extends into the reagent box 21 through the reagent box threaded opening 22, then the lifting rotary arm 51 drives the reagent needle 52 to automatically lift, the vertical slide cylinder 56 is pushed to slide downwards relative to the fixed slide column 53 under the elastic restoring force of the thrust spring 55 in the process of automatically lifting the reagent needle 52, the slide block 57 slides downwards in the second vertical slide groove 54 during the process, the vertical slide cylinder 56 is restored to the initial position relative to the fixed slide column 53, the reagent needle 52 is retracted into the inside of the vertical slide cylinder 56, the first connecting through hole 62 is restored to the initial size, the reagent needle 52 is wrapped in the vertical sliding cylinder 56 and the first rubber cover 60, so that dust, bacteria and fine particles in the air are effectively prevented from adhering to the reagent needle 52, the influence of the dust, the bacteria and the fine particles in the air on the experimental result is prevented, and experimental data are more accurate.

In this embodiment, one side on the detector body 10 articulates there is apron 12, the fixed upper rubber sealing edge 13 that is equipped with in port department of apron 12, the fixed lower rubber sealing edge 11 that is equipped with in edge of the up end of detector body 10, works as when rotate between apron 12 with the detector body 10 and close, lower rubber sealing edge 11 with the adaptation laminating between the upper rubber sealing edge 13 makes and seals each other laminating between upper rubber sealing edge 13 and the lower rubber sealing edge 11 when the relative rotation detector body 10 of apron 12 is closed to effectually prevent that solution sample in kit 21, reaction dish 80 and the sample screw mouth 31 from receiving bacterial infection, thereby prevent dust, bacterium and the fine particle in the air from producing the influence to the result of experiment, make experimental data more accurate.

In this embodiment, the cover plate 12 is embedded with the glass cover 70, when the cover plate 12 and the detector body 10 are closed to prevent bacteria, the working process inside the cover plate 12 can be watched through the glass cover 70, so that dust, bacteria and fine particles in air are prevented from affecting the experimental result, and experimental data are more accurate.

In this embodiment, the inside of reagent dish 20 is equipped with a plurality of reagent boxes 21 that are circumference equidistant range, reagent box screw thread mouth 22 has been seted up to the upper end of reagent box 21, the inside threaded connection of reagent box screw thread mouth 22 has screw thread circle one 23, the fixed spacing collar three 24 that is equipped with in edge of screw thread circle one 23 upper end, be equipped with the rubber cover three 25 on the spacing collar three 24, the centre of rubber cover three 25 runs through and is equipped with the connection through-hole three 26, works as reagent needle 52 follows the lift rocking arm 51 removes to reagent box screw thread mouth 22 top, connection through-hole one 62 is located directly over the connection through-hole three 26, the edge of rubber cover three 25 bottom is equipped with draw-in groove three 27, the spacing collar three 24 joint is inside the draw-in groove three 27, through the rubber cover three 25 that sets up seals the up in reagent box screw thread mouth 22's up terminal surface, has realized effectual inside and outside with reagent box 21 isolated, has effectually prevented that the bacterium from falling into the inside of reagent box 21 to prevent that dust in the experimental air and the accurate data of production of fine particle from influencing experimental result more.

In this embodiment, the internal thread of sample screw thread mouth 31 is connected with screw thread circle two 32, fixed limiting ring two 33 that is equipped with on the edge of screw thread circle two 32 upper end, be equipped with rubber cover two 34 on the limiting ring two 33, the centre of rubber cover two 34 runs through and is equipped with the connection through-hole two 35, when reagent needle 52 follows lift rocking arm 51 removes to sample screw thread mouth 31 top, connection through-hole one 62 is located directly over the switch-on hole two 35, fixed draw-in groove two 36 that is equipped with on the edge of rubber cover two 34 bottom, limiting ring two 33 card is established in draw-in groove two 36 inside, seals the up end at sample dish 30 through the rubber cover two 34 that set up, has realized effectually isolating the inside and the outside of sample dish 30, has prevented that the bacterium from falling into the inside of sample dish 30 to prevent dust, bacterium and the fine particle in the air from influencing the result of experiment, make experimental data more accurate.

In this embodiment, a rotating shaft lever 41 is fixedly arranged on one side of the cover plate 12 hinged to the detector body 10, the rotating shaft lever 41 is located at a position on the cover plate 12 away from a position where the cover plate 12 is hinged to the detector body 10, first vertical sliding grooves 42 are fixedly arranged at two ends of the detector body 10, the first vertical sliding grooves 42 are located at one side of the detector body 10 close to the upper rubber sealing edge 13, a connecting rod 43 is connected between the rotating shaft lever 41 and the first vertical sliding grooves 42, one end of the connecting rod 43 is provided with a rotating shaft hole 44 in a penetrating manner, the rotating shaft lever 41 is rotatably connected with the connecting rod 43 through the rotating shaft hole 44, one end of the connecting rod 43 away from the rotating shaft hole 44 is fixedly provided with a connecting shaft 45, the connecting shaft 45 is located inside the first vertical sliding grooves 42 and is slidably connected with the first vertical sliding grooves 42, the cover plate 12 is provided with a handle 14, the cover plate 12 is pulled by holding the handle 14 to rotate on the detector body 10, the cover plate 12 is closed and opened on the detector body 10, when the cover plate 12 is pulled to open relative to the detector body 10, the connecting rod 43 rotates on the rotating shaft rod 41, the connecting shaft 45 slides in the first vertical sliding groove 42 to the position of the bottom end of the first vertical sliding groove 42, the edge of the cover plate 12, the edge of the detector body 10 and the connecting rod 43 form a triangle as shown in figure 1, so that the cover plate 12 is supported in the vertical position, when the cover plate 12 is rotated to be closed relative to the detector body 10, the connecting rod 43 rotates relative to the rotating shaft rod 41, the connecting shaft 45 moves to the position of the first vertical sliding groove 42 close to the upper end, and the connecting rod 43 is positioned in the vertical position, the cover plate 12 is stopped at the most suitable position after being pulled, the device is more convenient in the experiment.

Specific examples: when the cover plate 12 is pulled to be closed relative to the detector body 10, the connecting shaft 45 moves to a position where the first vertical sliding groove 42 is close to the upper end, and the connecting shaft 43 is positioned at the vertical position, so that reagents or samples can be added into the device, and then when the cover plate 12 is relatively rotated to be closed to the detector body 10, the upper rubber sealing edge 13 and the lower rubber sealing edge 11 are mutually sealed and attached, so that the solution samples in the reagent box 21, the reaction disk 80 and the sample screw thread port 31 are effectively prevented from being subjected to dust, bacteria and experiment particles, and errors caused by falling are reduced;

in the use process of the device, the lifting rotating arm 51 rotates by taking the lifting rotating shaft 59 as the axis, so that the reagent needle 52 sucks the reagent in the reagent box 21 and the sample in the sample tray 30 and is injected into the reaction tray 80 for reaction, when the reagent needle 52 moves to the position above the reagent box 21, the position above the reaction tray 80 or the position above the sample screw hole 31, the lifting rotating arm 51 descends to drive the reagent needle 52 to descend, the reagent needle 52 stretches into the interior of the reagent box screw hole 22, in the descending process of the reagent needle 52, the first limiting ring 58 and the first limiting ring 60 are extruded on the surfaces of the reagent box screw hole 22, the reaction tray 80 and the sample screw hole 31, then the vertical sliding cylinder 56, the first limiting ring 58 and the first limiting ring 60 stop moving, the lifting rotating arm 51 continues to drive the reagent needle 52 to move downwards to compress the thrust spring 55, the vertical slide cylinder 56 slides upwards relative to the fixed slide column 53, the slide block 57 slides upwards in the second vertical slide groove 54, then the reagent needle 52 penetrates through the first connecting through hole 62 to extend into the inside of the reagent box threaded opening 22, the reagent needle 52 expands the area of the third connecting through hole 26, reagent solution in the reagent box 21 can be sucked up when the reagent needle 52 extends into the reagent box 21 through the reagent box threaded opening 22, then the lifting rotary arm 51 drives the reagent needle 52 to automatically lift, the vertical slide cylinder 56 is pushed to slide downwards relative to the fixed slide column 53 under the elastic restoring force of the thrust spring 55 in the process of automatically lifting the reagent needle 52, the slide block 57 slides downwards in the second vertical slide groove 54 during the process, the vertical slide cylinder 56 is restored to the initial position relative to the fixed slide column 53, the reagent needle 52 is retracted into the inside of the vertical slide cylinder 56, the first connecting through hole 62 is restored to the initial size, during this time, the working process inside the cover plate 12 can be viewed through the glass cover 70.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The biochemical analyzer comprises a detector body (10), and is characterized in that the upper surface of the detector body (10) is provided with a reagent disk (20), a sample disk (30), a reagent needle structure (50) and a reaction disk (80), the sample disk (30) is provided with a sample threaded port (31), the reagent needle structure (50) comprises a lifting rotating arm (51) movably connected with the detector body (10), the lower surface of one end of the lifting rotating arm (51) is fixedly provided with a lifting rotating shaft (59), the lifting rotating arm (51) is connected with the lifting rotating shaft (59) in a lifting manner, the lifting rotating shaft (59) is in rotary connection with the detector body (10), the lower surface of the end part of the lifting rotating arm (51) is vertically and fixedly provided with a reagent needle (52), the lower surface of one end of the lifting rotating arm (51) is fixedly provided with a fixed sliding column (53), the edge of the fixed sliding column (53) is provided with a plurality of second vertical sliding grooves (54) which are arranged at equal intervals along the circumference, the fixed sliding column (53) is sleeved with a vertical sliding shaft (56), the upper sliding column (56) is fixedly arranged at the inner wall (57) of the sliding column (57) at equal intervals, a first limiting ring (58) is fixedly arranged on the edge of the bottom end of the vertical sliding cylinder (56), a first rubber cover (60) is arranged at the bottom end of the vertical sliding cylinder (56), a first clamping groove (61) is arranged on the edge of the first rubber cover (60), the first limiting ring (58) is clamped inside the first clamping groove (61), a first connecting through hole (62) is formed in the middle of the first rubber cover (60) in a penetrating manner, a thrust spring (55) is sleeved on the fixed sliding column (53) and the vertical sliding cylinder (56), the bottom end of the thrust spring (55) is extruded on the upper end face of the first limiting ring (58), and the top end of the thrust spring (55) is extruded on the lower end face of the lifting rotating arm (51);

when the device is in a non-working state, the sliding block (57) is positioned at the bottommost end in the second vertical sliding groove (54), the reagent needle (52) is completely positioned in the vertical sliding cylinder (56), and the first connecting through hole (62) is positioned below the reagent needle (52).

2. The biochemical analyzer according to claim 1, wherein a cover plate (12) is hinged to one side of the detector body (10), an upper rubber sealing edge (13) is fixedly arranged at a port of the cover plate (12), a lower rubber sealing edge (11) is fixedly arranged at an edge of an upper end face of the detector body (10), and when the cover plate (12) and the detector body (10) are rotationally closed, the lower rubber sealing edge (11) is matched and attached with the upper rubber sealing edge (13).

3. A biochemical analyzer according to claim 2, characterized in that the cover plate (12) is embedded with a glass cover (70).

4. The biochemical analyzer according to claim 1, wherein a plurality of reagent boxes (21) which are arranged at equal intervals are arranged in the reagent disc (20), reagent box screw thread openings (22) are formed in the upper ends of the reagent boxes (21), screw thread rings (23) are connected to the inner screw threads of the reagent box screw thread openings (22), a limit ring three (24) is fixedly arranged at the edge of the upper ends of the screw thread rings (23), a rubber cover three (25) is arranged on the limit ring three (24), a connecting through hole three (26) is formed in the middle of the rubber cover three (25) in a penetrating mode, and when the reagent needle (52) moves above the reagent box screw thread openings (22) along with the lifting rotating arm (51), the connecting through hole one (62) is located right above the connecting through hole three (26), a clamping groove three (27) is formed in the edge of the bottom end of the rubber cover three (25), and the limit ring three (24) is clamped inside the clamping groove three (27).

5. The biochemical analyzer according to claim 1, wherein the sample screw hole (31) is internally connected with a second screw ring (32), a second limit ring (33) is fixedly arranged on the edge of the upper end of the second screw ring (32), a second rubber cover (34) is arranged on the second limit ring (33), a second connection through hole (35) is arranged in the middle of the second rubber cover (34) in a penetrating manner, when the reagent needle (52) moves above the sample screw hole (31) along with the lifting rotating arm (51), the first connection through hole (62) is positioned right above the second connection through hole (35), a second clamping groove (36) is fixedly arranged on the edge of the bottom end of the second rubber cover (34), and the second limit ring (33) is clamped inside the second clamping groove (36).

6. A biochemical analyzer according to claim 2, wherein a rotating shaft rod (41) is fixedly arranged on one side of the cover plate (12) hinged to the detector body (10), the rotating shaft rod (41) is located at a position on the cover plate (12) away from the position where the cover plate (12) is hinged to the detector body (10), first vertical sliding grooves (42) are fixedly arranged at two ends of the detector body (10), the first vertical sliding grooves (42) are located on one side of the detector body (10) close to the upper rubber sealing edge (13), a connecting rod (43) is connected between the rotating shaft rod (41) and the first vertical sliding grooves (42), a rotating shaft hole (44) is formed in one end of the connecting rod (43) in a penetrating mode, the rotating shaft rod (41) penetrates through the rotating shaft hole (44) and is connected with the connecting rod (43) in a rotating mode, a connecting shaft (45) is fixedly arranged at one end of the connecting rod (43) away from the rotating shaft hole (44), and the connecting shaft (45) is located on one side of the detector body (10) close to the upper rubber sealing edge (13), a connecting rod (42) is connected with the first vertical sliding groove (12).