Automatic sampling mechanism for electrolyte analyzer

Abstract

The utility model discloses an automatic sampling mechanism for an electrolyte analyzer, the automatic sampling mechanism comprises a base, a reagent turntable, an optical detection device, a lifting device and a sampling needle assembly, the reagent turntable is directly or indirectly arranged on the base, the optical detection device is arranged on the base and is opposite to the reagent turntable, and the lifting device is arranged on the lifting device. The lifting device is mounted on the base, and the sampling needle assembly is mounted on the lifting device. According to the automatic sampling mechanism for the electrolyte analyzer, each tube of reagent can be accurately identified through testing, the reagent can be accurately extracted, compared with most of sampling mechanisms in the market, the capacity of a reagent sample can be reduced, meanwhile, the problems that liquid level detection is not accurate, a sampling needle touches the bottom and gets stuck and the like are solved, and the automatic sampling mechanism for the electrolyte analyzer is suitable for popularization and application. The normal use of the electrolyte analyzer and the accuracy of sample detection are ensured.

Description

Technical Field

[0001] This utility model discloses an automatic sampling mechanism, particularly an automatic sampling mechanism for an electrolyte analyzer, belonging to the technical field of biochemical analysis equipment. Background Technology

[0002] Biochemical analysis equipment is used to detect and analyze biochemical substances, providing information for clinical diagnosis, treatment, prognosis, and health status. Electrolyte analyzers are an important type of biochemical analysis equipment. They are used to measure the electrolyte content in samples such as whole blood, plasma, serum, and urine, primarily detecting indicators such as potassium ions, sodium ions, chloride ions, ionized calcium, pH value, and bicarbonate.

[0003] Biochemical analysis equipment, especially electrolyte analyzers, cannot function without sampling mechanisms. Reasonable sampling methods and techniques can ensure the representativeness and consistency of samples, thereby providing accurate and reliable biochemical analysis results.

[0004] Currently, the automatic sampling mechanisms of electrolyte analyzers on the market have problems such as inaccurate sample extraction, inaccurate liquid level detection when the sample size is small, and missed samples during scanning, which seriously affect the normal use of electrolyte analyzers and the accuracy of sample detection. Summary of the Invention

[0005] In view of the shortcomings of the existing automatic sampling mechanism of electrolyte analyzer mentioned above, such as inaccurate sample extraction and inaccurate liquid level detection when the sample is small, this utility model provides an automatic sampling mechanism for electrolyte analyzer, which can accurately sample reagents by using a lifting sampling needle structure in combination with a rotating reagent bottle mechanism.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an automatic sampling mechanism for an electrolyte analyzer. The automatic sampling mechanism includes a base, a reagent turntable, an optical detection device, a lifting device, and a sampling needle assembly. The reagent turntable is directly or indirectly installed on the base. The optical detection device is installed on the base and is arranged opposite to the reagent turntable. The lifting device is installed on the base, and the sampling needle assembly is installed on the lifting device.

[0007] The technical solution adopted by this utility model to solve its technical problem further includes:

[0008] A rotating motor is fixedly installed on the base, and the reagent turntable is mounted on the rotating motor.

[0009] The reagent turntable includes a handle, an upper turntable, and a lower turntable. The upper and lower turntables are arranged opposite each other on the reagent turntable body. Reagent bottle placement positions are arranged opposite each other on the upper and lower turntables. The handle is fixedly installed on the reagent turntable body.

[0010] The reagent bottles are arranged in a ring on the upper and lower turntables.

[0011] The optical detection device includes a scanner, a bracket, and a reflective lens. The scanner and the reflective lens are fixedly mounted on the bracket. The light path of the reflective lens corresponds to the reagent turntable, and the light path of the reflective lens corresponds to the scanner.

[0012] The lifting mechanism includes a bracket, a lead screw, a sliding guide rail, a coupling, a limit optocoupler, an optocoupler encoder, a rotary optocoupler, and a drive motor. The lead screw is installed inside the bracket, and the drive motor is fixedly installed inside the bracket. The drive motor is directly or indirectly connected to the lead screw and drives the lead screw to rotate. The sliding guide rail is fixedly installed on the bracket and is parallel to the lead screw. A nut is fitted on the lead screw, and a slider is installed on the sliding guide rail. The slider and the nut are fixedly installed together, and the sampling needle assembly is installed on the slider.

[0013] The drive motor is connected to the lead screw via a coupling.

[0014] The top of the lead screw is equipped with an optical coupler code disk, and the top of the bracket is fixedly equipped with a rotating optical coupler, with the rotating optical coupler and the optical coupler code disk arranged opposite to each other.

[0015] A limit optocoupler is fixedly installed on the bracket.

[0016] The sampling needle assembly includes an upper cover, a compression spring, a micro switch, a needle holder, and a sampling needle. The needle holder is fixedly installed with the lifting mechanism, the upper cover and the needle holder are installed together, the compression spring is sleeved on the sampling needle, and the lower end of the compression spring abuts against the connecting piece on the sampling needle. The upper end of the compression spring is connected to the upper cover. The micro switch is fixedly installed inside the needle holder, and the connecting piece on the sampling needle contacts the micro switch.

[0017] The beneficial effects of this utility model are as follows: The automatic sampling mechanism for an electrolyte analyzer in this utility model can accurately identify each reagent tube and accurately extract the reagent after testing. Compared with most sampling mechanisms on the market, it can reduce the volume of reagent samples. At the same time, this utility model solves the problems of inaccurate liquid level detection and sampling needle jamming at the bottom, ensuring the normal use of the electrolyte analyzer and the accuracy of sample detection.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a two-dimensional structural diagram of the present invention from a second perspective.

[0021] Figure 3 It is the three-dimensional structure schematic view of the reagent turntable in the utility model.

[0022] Figure 4 It is the three-dimensional structure schematic view of the optical detection device in the utility model.

[0023] Figure 5 It is the three-dimensional structure schematic view of the lifting mechanism in the utility model.

[0024] Figure 6 It is the sectional structure schematic view of the sampling needle assembly in the utility model.

[0025] In the figure, 1 - base, 2 - reagent turntable, 21 - handle, 22 - upper turntable, 23 - lower turntable, 3 - optical detection device, 31 - scanner, 32 - support, 33, reflecting lens, 4 - lifting mechanism, 41 - support, 42 - lead screw, 43 - sliding guide rail, 44 - coupling, 45 - limit photoelectric coupler, 46 - photoelectric coupler code disc, 47 - rotary photoelectric coupler, 48 - driving motor, 49 - nut, 410 - sliding block, 5 - sampling needle assembly, 51 - upper cover, 52 - compression spring, 53 - microswitch, 54 - needle holder, 55 - sampling needle, 56 - connecting piece, 6 - rotating motor. DETAILED DESCRIPTION

[0026] The embodiment is the preferred embodiment of the utility model, and other principles and basic structures that are same or similar to the embodiment are within the protection scope of the utility model.

[0027] Please refer to the attached Figure 1 to the attached Figure 6 The utility model discloses an automatic sampling mechanism for electrolyte analyzer, which is used on the electrolyte analyzer for automatic sampling. The automatic sampling mechanism mainly comprises a base 1, a reagent turntable 2, an optical detection device 3, a lifting device 4 and a sampling needle assembly 5. The base 1 is the main supporting structure of the utility model and provides a supporting platform for the work of the utility model. The reagent turntable 2 is directly or indirectly installed on the base 1. The optical detection device 3 is installed on the base 1 and is oppositely arranged with the reagent turntable 2. The lifting device 4 is installed on the base 1. The sampling needle assembly 5 is installed on the lifting device 4.

[0028] In this embodiment, the base 1 is fixedly installed with a rotating motor 6, and the reagent turntable 2 is installed on the rotating motor 6. In use, the reagent bottles to be sampled and detected are placed on the reagent turntable 2. The reagent turntable 2 is driven by the rotating motor 6 to rotate to a specified position. The lifting mechanism 4 drives the sampling needle assembly 5 to descend. The sampling needle assembly 5 descends to the reagent bottle on the reagent turntable 2. When the reagent liquid level in the reagent bottle is detected, the lifting mechanism 4 stops moving. The sampling needle assembly 5 starts to suck the reagent sample and is detected by the computer. When the set amount is reached, the sucking is stopped. The lifting mechanism 4 starts to rise and lift up. At the same time, the optical detection mechanism 3 scans the code of the reagent bottle through the reflecting lens to confirm the reagent sample. Subsequently, the rotating motor 6 drives the reagent turntable 2 to rotate to the position of the next reagent bottle. The lifting mechanism 4 drives the sampling needle assembly 5 to descend to start sampling. In this way, the sampling work is repeated continuously. At the same time, the sucked sample undergoes a series of chemical reactions and is processed by the computer to obtain a group of data, which is fed back to medical staff for research through the printer or the man-machine interface.

[0029] Please focus on the attached Figure 3 In this embodiment, the reagent turntable 2 includes a handle 21, an upper turntable 22 and a lower turntable 23. The upper turntable 22 and the lower turntable 23 are oppositely arranged on the main body of the reagent turntable 2. The upper turntable 22 and the lower turntable 23 oppositely have reagent bottle placing positions for placing reagent bottles. The reagent bottle placing positions are annularly distributed on the upper turntable 22 and the lower turntable 23. The handle 21 is fixedly installed on the main body of the reagent turntable 2. Lifting the handle 21 can separate the upper turntable 22 and the lower turntable 23 from the motor 6. Closing the handle 21 can connect the upper turntable 22 and the lower turntable 23 with the motor 6 into a whole. The rotating motor 6 drives the upper turntable 22 and the lower turntable 23 to synchronously rotate. In this way, the reagent bottle loading can be facilitated.

[0030] Please focus on the attached Figure 4 In this embodiment, the optical detection device 3 mainly includes a scanner 31, a bracket 32 and a reflecting lens 33. The scanner 31 and the reflecting lens 33 are fixedly installed on the bracket 32. The light inlet path of the reflecting lens 33 corresponds to the reagent turntable 2. The light outlet path of the reflecting lens 33 corresponds to the scanner 31. The bar code of the reagent bottle placed on the upper turntable 22 can be reflected to the scanner 31 through the mirror image of the reflecting lens 33. Since the reflecting angle of the reflecting lens 33 is relatively large, the code scanning is clearer than that by the traditional direct scanning by the scanner. Each reagent tube can be accurately identified.

[0031] Please focus on the attached Figure 5In the embodiment, the lifting mechanism 4 mainly comprises a support 41, a lead screw 42, a sliding guide rail 43, a coupling 44, a limit photoelectric coupler 45, a photoelectric coupler disc 46, a rotary photoelectric coupler 47, and a driving motor 48. The lead screw 42 is installed in the support 41, and the driving motor 48 is fixedly installed in the support 41. The driving motor 48 is directly or indirectly connected with the lead screw 42, and drives the lead screw 42 to rotate through the driving motor 48. In the embodiment, the driving motor 48 is connected with the lead screw 42 through the coupling 44. The lead screw 42 is provided with the photoelectric coupler disc 46 at the top. The support 41 is fixedly provided with the rotary photoelectric coupler 47 at the top. The rotary photoelectric coupler 47 is oppositely arranged with the photoelectric coupler disc 46, and the rotary photoelectric coupler 47 and the photoelectric coupler disc 46 can detect the rotation number and rotation angle of the lead screw 42. The sliding guide rail 43 is fixedly installed on the support 41 and is arranged in parallel with the lead screw 42. The lead screw 42 is sleeved with a nut 49. When the lead screw 42 rotates, the nut 49 moves up and down. The sliding guide rail 43 is provided with a sliding block 410. The sliding block 410 is fixedly installed with the nut 49. The sampling needle assembly 5 is installed on the sliding block 410 and can slide on the sliding guide rail 43. The lead screw 42 and the sliding guide rail 43 form a double support structure to ensure the stable operation of the lifting mechanism 4. The limit photoelectric coupler 45 is fixedly installed on the support 41. The limit photoelectric coupler 45 and the rotary photoelectric coupler 46 accurately control the moving distance of the lifting mechanism 4, ensure the accuracy of sampling, and prevent the sampling mechanism from being stuck and the sampling needle from being deviated.

[0032] Please focus on the attached Figure 6 In the embodiment, the sampling needle assembly 5 mainly comprises an upper cover 51, a compression spring 52, a micro switch 53, a needle seat 54, and a sampling needle 55. The needle seat 54 is fixedly installed with the sliding block 410. The upper cover 51 and the needle seat 54 are fixedly connected through screws. The compression spring 52 is sleeved on the sampling needle 55, and the lower end of the compression spring 52 abuts against a connecting piece 56 on the sampling needle 55. The upper end of the compression spring 52 is connected with the upper cover 51. The reaction force is applied to the sampling needle 55. The micro switch 53 is fixedly installed in the needle seat 54. At the same time, the connecting piece 56 on the sampling needle 55 is in contact with the micro switch 53. When the sampling needle 55 moves downward to contact the bottom of the reagent bottle, the sampling needle 55 is pushed upward by the bottom of the reagent bottle to extrude the compression spring 52, and at the same time, the micro switch 53 is actuated to trigger a signal output to the online computer. When the sampling needle 55 moves upward to leave the bottom of the reagent bottle, the sampling needle 55 moves downward under the action of the compression spring 52 to reset the micro switch 53 to trigger a signal output to the online computer. At the same time, when the sampling needle 55 contacts the reagent liquid surface, the capacitance of the sampling needle 55 changes. After the change of the capacitance value is calculated, the online computer can calculate and determine the position of the reagent liquid surface. In this way, the reagent liquid surface can be accurately determined and the sampling needle can be prevented from being stuck.

[0033] The automatic sampling mechanism for the electrolyte analyzer can accurately identify each reagent tube and accurately extract the reagent, compared with most sampling mechanisms on the market, the capacity of the reagent sample can be reduced, meanwhile, the utility model solves the problems of inaccurate liquid level detection and sampling needle stuck due to bottom touching, and ensures normal use of the electrolyte analyzer and accuracy of sample detection.

Claims

1. An automatic sampling mechanism for an electrolyte analyzer, characterized in that: The automatic sampling mechanism includes a base (1), a reagent turntable (2), an optical detection device (3), a lifting device (4), and a sampling needle assembly (5). The reagent turntable (2) is directly or indirectly mounted on the base (1). The optical detection device (3) is mounted on the base (1) and is arranged opposite to the reagent turntable (2). The lifting device (4) is mounted on the base (1), and the sampling needle assembly (5) is mounted on the lifting device (4).

2. The automatic sampling mechanism for an electrolyte analyzer according to claim 1, characterized in that: A rotating motor (6) is fixedly installed on the base (1), and the reagent turntable (2) is installed on the rotating motor (6).

3. The automatic sampling mechanism for an electrolyte analyzer according to claim 1, characterized in that: The reagent turntable (2) includes a handle (21), an upper turntable (22) and a lower turntable (23). The upper turntable (22) and the lower turntable (23) are arranged opposite to each other on the main body of the reagent turntable (2). Reagent bottle placement positions are arranged opposite to each other on the upper turntable (22) and the lower turntable (23). The handle (21) is fixedly installed on the main body of the reagent turntable (2).

4. The automatic sampling mechanism for an electrolyte analyzer according to claim 3, characterized in that: The reagent bottles are arranged in a ring on the upper turntable (22) and the lower turntable (23).

5. The automatic sampling mechanism for an electrolyte analyzer according to claim 1, characterized in that: The optical detection device (3) includes a scanner (31), a first support (32) and a reflective lens (33). The scanner (31) and the reflective lens (33) are fixedly mounted on the first support (32). The light path of the reflective lens (33) corresponds to the reagent turntable (2), and the light path of the reflective lens (33) corresponds to the scanner (31).

6. The automatic sampling mechanism for an electrolyte analyzer according to claim 1, characterized in that: The lifting device (4) includes a bracket (41), a lead screw (42), a sliding guide rail (43), a coupling (44), a limiting optocoupler (45), an optocoupler encoder (46), a rotating optocoupler (47), and a drive motor (48). The lead screw (42) is installed inside the bracket (41), and the drive motor (48) is fixedly installed inside the bracket (41). The drive motor (48) is directly or indirectly connected to the lead screw (42) and drives the lead screw (42) to rotate. The sliding guide rail (43) is fixedly installed on the bracket (41) and is parallel to the lead screw (42). A nut (49) is fitted on the lead screw (42), and a slider (410) is installed on the sliding guide rail (43). The slider (410) and the nut (49) are fixedly installed together. The sampling needle assembly (5) is installed on the slider (410).

7. The automatic sampling mechanism for an electrolyte analyzer according to claim 6, characterized in that: The drive motor (48) is connected to the lead screw (42) via a coupling (44).

8. The automatic sampling mechanism for an electrolyte analyzer according to claim 6, characterized in that: The top of the lead screw (42) is equipped with an optical coupler code disk (46), and the top of the bracket (41) is fixedly equipped with a rotating optical coupler (47). The rotating optical coupler (47) and the optical coupler code disk (46) are arranged opposite to each other.

9. The automatic sampling mechanism for an electrolyte analyzer according to claim 6, characterized in that: A limit optocoupler (45) is fixedly installed on the bracket (41).

10. The automatic sampling mechanism for an electrolyte analyzer according to claim 1, characterized in that: The sampling needle assembly (5) includes a top cover (51), a compression spring (52), a micro switch (53), a needle holder (54), and a sampling needle (55). The needle holder (54) is fixedly installed together with the lifting device (4). The top cover (51) and the needle holder (54) are installed together. The compression spring (52) is sleeved on the sampling needle (55), and the lower end of the compression spring (52) abuts against the connecting piece (56) on the sampling needle (55). The upper end of the compression spring (52) is connected to the top cover (51). The micro switch (53) is fixedly installed inside the needle holder (54), and the connecting piece (56) on the sampling needle (55) contacts the micro switch (53).

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