High-precision liquid separation device

Abstract

The utility model discloses a high-precision liquid separation device which comprises a rack, a carrier used for bearing a reagent plate is arranged on the rack, and the carrier can be driven by a transferring assembly to move horizontally. A driving frame is arranged on one side of the transferring assembly in a sliding mode, and the moving direction of the driving frame is perpendicular to the moving direction of the carrier; a liquid separation plate is arranged on the driving frame and can move up and down under the driving of the jacking assembly; a group of liquid injection nozzles are arranged on the liquid distribution plate, and an electromagnetic valve is arranged at an inlet of each liquid injection nozzle. The device has the main beneficial effects that the design is exquisite, the device adopts lead screw transmission, and the characteristics of high lead screw transmission precision, high efficiency and stable movement are utilized, so that the movement of the liquid injection nozzle is more accurate, the positioning precision is high, the liquid injection nozzle can be ensured to be positioned right above a reagent tank during liquid injection, the liquid is prevented from splashing, and the working efficiency is improved. The device has the characteristics of high speed, accurate operation, high automation degree and the like, and greatly saves the labor cost.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid separation equipment, and in particular to a high-precision liquid separation device. Background Art

[0002] With the development of biotechnology, there are more and more types of biological products, and the amount of biological samples to be tested is increasing. In the processing of biological products, biological reagents need to be quickly and accurately packaged. More and more tests are using automated instruments, and the production of test reagents is also increasing. Generally, multiple test reagents are required for each test item.

[0003] For example, the authorization announcement number CN 217796184 U discloses a liquid separation mechanism of a rapid liquid separation device, wherein the liquid separation mechanism includes a plurality of liquid separation needles, a plurality of liquid separation needle fixing devices, a lifting device and a lifting locking member, and the liquid separation plate slide includes a slide, a slide bottom plate, a liquid separation plate fixing frame and a liquid separation plate, and the liquid separation plate is provided with a plurality of plate positions. However, the horizontal axis moving structure of the mechanism is complex, and the operation is time-consuming and labor-intensive. Long-term use and accommodation cause thread wear, which affects the service life. In addition, the up and down movement accuracy of the horizontal axis is poor, and the liquid in the liquid separation needle is prone to splashing when dripping into the liquid separation plate, which affects the accuracy of liquid separation and has great limitations. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-precision liquid separation device.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A high-precision liquid separation device comprises a frame, on which a carrier for carrying a reagent plate is provided, and the carrier can be driven to move horizontally by a transfer assembly; a driving frame is slidably provided on one side of the transfer assembly, and the movement direction of the driving frame is perpendicular to the movement direction of the carrier; a liquid separation plate is provided on the driving frame, and the liquid separation plate can move up and down under the drive of a lifting assembly; a group of liquid injection nozzles are provided on the liquid separation plate, and an electromagnetic valve is provided at the inlet of each liquid injection nozzle.

[0007] Preferably, the transfer assembly at least includes a transfer frame fixedly mounted on the frame, a transmission wheel is pivotally provided on the transfer frame, a transmission belt is wound around the transmission wheels, a carrier is fixedly mounted on the transmission belt, and a transfer motor is also fixedly mounted on the transfer frame, and a motor shaft of the transfer motor is fixedly connected to one of the transmission wheels.

[0008] Preferably, the transfer assembly further comprises guide rails fixedly mounted on both sides of the transmission belt, the guide rails are provided with guide blocks matched therewith, and the carrier is fixedly mounted on the guide blocks.

[0009] Preferably, a groove is provided on the carrier, and the outer contour of the groove is matched with the outer contour of the reagent plate.

[0010] Preferably, a support plate is fixedly provided on the frame, a guide rail is fixedly provided on the support plate, a guide block matching the guide rail is provided on the guide rail, and the drive frame is fixedly provided on the guide block.

[0011] Preferably, a driving motor is fixedly provided on the frame, a first transmission screw is fixedly provided on the motor shaft of the driving motor, a first transmission screw is provided on the first transmission screw for screw transmission, and the driving frame is fixedly provided on the first transmission nut.

[0012] Preferably, the lifting assembly at least includes a support plate fixedly mounted on the driving frame, a vertically arranged slide rail is fixedly mounted on the support plate, a slider matched therewith is provided on the slide rail, a lifting plate is fixedly mounted on the slider, a lifting block is fixedly mounted on the lifting plate, and the liquid separator plate is fixedly mounted on the lifting block.

[0013] Preferably, a lifting motor is fixedly provided on the driving frame, a second transmission screw is fixedly provided on the motor shaft of the lifting motor, a second transmission screw is provided on the second transmission screw for screw transmission, and the lifting plate is fixedly provided on the second transmission nut.

[0014] Preferably, a fixing plate is fixedly provided on the driving frame, and a displacement sensor is provided on the fixing plate which is arranged in an upper and lower manner. A sensing plate is fixedly provided on the lifting plate, and the sensing plate can be placed on the displacement sensor.

[0015] Preferably, the liquid separation plate is provided with two said slots, each of which is provided with an injection nozzle arranged equidistantly, the inlet of the injection nozzle is connected to the external pipeline through an electromagnetic valve, and the outlet of the injection nozzle is located directly above the corresponding reagent slot of the reagent plate.

[0016] The beneficial effects of the utility model are mainly reflected in:

[0017] 1. Exquisite design. The device adopts screw drive to utilize the characteristics of high precision, high efficiency and smooth movement of screw drive. At the same time, the setting of the slide rail and slider as well as the guide rail and guide block can ensure the smooth operation of the liquid separation plate, which can make the movement of the liquid injection nozzle more accurate and have high positioning accuracy. It can ensure that the liquid injection nozzle is located directly above the reagent tank when injecting liquid to avoid liquid splashing. It has the characteristics of fast speed, accurate operation and high degree of automation, which greatly saves labor costs. In addition, the device is stable and reliable, easy to disassemble, replace and repair, and greatly improves work efficiency;

[0018] 2. The cooperation between the guide block and the guide tube can improve the stability of the carrier movement, ensure the accuracy of the carrier movement position, and maximize the accuracy of liquid dispensing;

[0019] 3. The injection volume of the liquid can be controlled by the solenoid valve, which can realize automatic weighing and liquid dispensing, and quickly and accurately add liquid to the reagent tank, ensuring the yield rate to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 : A three-dimensional diagram of a preferred embodiment of the utility model;

[0022] Figure 2 : A three-dimensional diagram of a carrier and a transfer assembly in a preferred embodiment of the utility model;

[0023] Figure 3 : A three-dimensional diagram of a preferred embodiment of the utility model, at this time, the carrier, transfer assembly, liquid separation plate and its upper parts are removed. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0026] like Figures 1 to 3 As shown, the utility model discloses a high-precision liquid dispensing device, including a frame 1, on which a carrier 2 for carrying a reagent plate 100 is provided, and a groove 21 is provided on the carrier 2, and the outer contour of the groove 21 is matched with the outer contour of the reagent plate 100. The reagent plate 100 can be placed in the groove 21 to achieve precise positioning. This positioning method is simple, convenient, and efficient, and greatly improves work efficiency.

[0027] In the above, the carrier 2 can be driven to move horizontally by the transfer assembly 3, and the transfer assembly 3 at least includes a transfer frame 31 fixed on the frame 1, a transmission wheel 32 is pivotally provided on the transfer frame 31, a transmission belt 33 is wound between the transmission wheels 32, the carrier 2 is fixed on the transmission belt 33, and a transfer motor 34 is also fixed on the transfer frame 31, and the motor shaft of the transfer motor 34 is fixedly connected to one of the transmission wheels 32. The transfer assembly 3 also includes guide rails 35 fixed on both sides of the transmission belt 33, and guide blocks 36 adapted thereto are provided on the guide rails 35, and the carrier 2 is fixed on the guide blocks 36. The cooperation between the guide blocks 36 and the guide tube 35 can improve the stability of the movement of the carrier 2, ensure the accuracy of the carrier's moving position, and maximize the accuracy of liquid separation.

[0028] The frame 1 is fixed with a support plate 41, the support plate 41 is fixed with a guide rail 42, the guide rail 42 is provided with a guide block 43 matched therewith, the drive frame 4 is fixed on the guide block 43, and the movement direction of the drive frame 4 is perpendicular to the movement direction of the carrier 2. The frame 1 is fixed with a drive motor 44, the motor shaft of the drive motor 44 is fixed with a first transmission screw 45, the first transmission screw 45 is provided with a first transmission nut 46 which is a screw drive therewith, and the drive frame 4 is fixed on the first transmission nut 46.

[0029] The driving frame 4 is provided with a liquid separation plate 5, and the liquid separation plate 5 can move up and down under the drive of the lifting assembly 6, and the lifting assembly 6 at least includes a support plate 61 fixed on the driving frame 4, and a vertically arranged slide rail 62 is fixed on the support plate 61, and a slider 63 adapted thereto is provided on the slide rail 62, and a lifting plate 64 is fixed on the slider 63, and a lifting block 65 is fixed on the lifting plate 64, and the liquid separation plate 5 is fixed on the lifting block 65. The driving frame 4 is also provided with a lifting motor 66, and a second transmission screw 67 is fixed on the motor shaft of the lifting motor 66, and a second transmission nut 68 is provided on the second transmission screw 67, and the lifting plate 64 is fixed on the second transmission nut 68. The screw drive is adopted to utilize the characteristics of high precision, high efficiency and stable movement of the screw drive, and at the same time, the setting of the slide rail and the slider as well as the guide rail and the guide block can ensure the smoothness of the operation of the liquid separation plate 5, prevent the occurrence of liquid splashing, and greatly improve the yield rate and accuracy. In addition, the device is stable and reliable, easy to disassemble, replace and repair, and greatly improves work efficiency.

[0030] A fixed plate 49 is fixed on the driving frame 4, and a displacement sensor 48 is arranged on the fixed plate 49. A sensing plate 47 is fixed on the lifting plate 64, and the sensing plate 47 can be placed on the displacement sensor 48. The displacement sensor 48 can monitor the position of the lifting plate 64 in real time through the sensing plate 47 to ensure the accuracy of the moving position.

[0031] The liquid separation plate 5 is provided with a group of liquid injection nozzles 7, and a solenoid valve 8 is provided at the entrance of each of the liquid injection nozzles 7. The liquid separation plate 5 is provided with two slots 51, and each of the slots 51 is provided with a liquid injection nozzle 7 arranged equidistantly. The entrance of the liquid injection nozzle 7 is connected to the external pipeline through the solenoid valve 8, and the outlet of the liquid injection nozzle 7 is located directly above the corresponding reagent tank 101 of the reagent plate 100. The injection amount of the liquid can be controlled by the solenoid valve, and automatic weighing and liquid separation can be realized, and liquid can be added to the reagent tank quickly and accurately, ensuring the yield rate to the greatest extent.

[0032] The frame 1 is also provided with a waste liquid tank 9, which is located below the liquid injection nozzle 7. After the liquid injection is completed, the waste liquid dripping from the liquid injection nozzle can be collected to ensure safety and cleanliness.

[0033] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0034] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-precision liquid separation device, comprising a frame (1), characterized in that: The frame (1) is provided with a carrier (2) for carrying a reagent plate (100), and the carrier (2) can be driven by a transfer assembly (3) to move horizontally; a driving frame (4) is slidably provided on one side of the transfer assembly (3), and the movement direction of the driving frame (4) is perpendicular to the movement direction of the carrier (2); a liquid separation plate (5) is provided on the driving frame (4), and the liquid separation plate (5) can move up and down under the drive of a lifting assembly (6); a group of liquid injection nozzles (7) are provided on the liquid separation plate (5), and a solenoid valve (8) is provided at the entrance of each of the liquid injection nozzles (7).

2. A high-precision liquid separation device according to claim 1, characterized in that: The transfer assembly (3) comprises at least a transfer frame (31) fixedly mounted on the frame (1); a transmission wheel (32) is pivotally mounted on the transfer frame (31); a transmission belt (33) is wound around the transmission wheels (32); a carrier (2) is fixedly mounted on the transmission belt (33); a transfer motor (34) is also fixedly mounted on the transfer frame (31); and a motor shaft of the transfer motor (34) is fixedly connected to one of the transmission wheels (32).

3. A high-precision liquid separation device according to claim 2, characterized in that: The transfer assembly (3) further comprises guide rails (35) fixedly mounted on both sides of the transmission belt (33), guide blocks (36) matching the guide rails (35) being provided on the guide rails (35), and the carrier (2) being fixedly mounted on the guide blocks (36).

4. A high-precision liquid separation device according to claim 2, characterized in that: The carrier (2) is provided with a groove (21), and the outer contour of the groove (21) is adapted to the outer contour of the reagent plate (100).

5. A high-precision liquid separation device according to claim 1, characterized in that: A support plate (41) is fixedly provided on the frame (1), a guide rail (42) is fixedly provided on the support plate (41), a guide block (43) matched therewith is provided on the guide rail (42), and the drive frame (4) is fixedly provided on the guide block (43).

6. A high-precision liquid separation device according to claim 5, characterized in that: A drive motor (44) is fixedly mounted on the frame (1); a first transmission screw (45) is fixedly mounted on the motor shaft of the drive motor (44); a first transmission screw (45) is provided on the first transmission screw (45) and is thread-driven therewith; and the drive frame (4) is fixedly mounted on the first transmission nut (46).

7. A high-precision liquid separation device according to claim 5, characterized in that: The lifting assembly (6) comprises at least a support plate (61) fixedly mounted on the driving frame (4); a vertically mounted slide rail (62) fixedly mounted on the support plate (61); a slider (63) matched therewith mounted on the slider (62); a lifting plate (64) fixedly mounted on the slider (63); a lifting block (65) fixedly mounted on the lifting plate (64); and the liquid separation plate (5) fixedly mounted on the lifting block (65).

8. A high-precision liquid separation device according to claim 7, characterized in that: The driving frame (4) is also provided with a lifting motor (66), a second transmission screw (67) is fixedly provided on the motor shaft of the lifting motor (66), a second transmission screw (67) is provided on the second transmission screw (67) and a second transmission nut (68) is provided for screw transmission therewith, and the lifting plate (64) is fixedly provided on the second transmission nut (68).

9. A high-precision liquid separation device according to claim 8, characterized in that: A fixing plate (49) is fixedly provided on the driving frame (4), and a displacement sensor (48) is provided on the fixing plate (49) and is disposed in an upper and lower manner. A sensing plate (47) is fixedly provided on the lifting plate (64), and the sensing plate (47) can be placed on the displacement sensor (48).

10. A high-precision liquid separation device according to claim 1, characterized in that: The liquid separation plate (5) is provided with two slots (51), each of the slots (51) is provided with an equidistantly arranged liquid injection nozzle (7), the inlet of the liquid injection nozzle (7) is connected to an external pipeline via a solenoid valve (8), and the outlet of the liquid injection nozzle (7) is located directly above the corresponding reagent slot (101) of the reagent plate (100).

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