CN-224216401-U - High-efficient purifier based on QuEChERS method

Abstract

The application relates to a high-efficiency purifying device based on a QuEChERS method, which belongs to the technical field of sample pretreatment and comprises a purifying tube filled with an adsorbent, wherein a microporous filter membrane is arranged at the bottom of the purifying tube, and a piston rod is detachably arranged on the purifying tube. The application has the advantage of improving the sample purifying efficiency.

Inventors

• LIN CAIYONG
• ZHANG JUANJUAN
• LI JIALIN
• ZHANG LILI
• LIN HUASHAN
• YANG SHENGMEI

Assignees

• 厦门鹭珈聚芯生物科技有限公司

Dates

Publication Date

20260508

Application Date

20250319

Claims (4)

1. 1. The high-efficiency purification device based on the QuEChERS method is characterized by comprising a purification tube (1) filled with an adsorbent, wherein a microporous filter membrane (2) is arranged at the bottom of the purification tube (1), and a piston rod (3) is detachably arranged on the purification tube (1); The device is characterized by further comprising a base (4), a frame (41), support rods (42) and a placing disc (5), wherein the frame (41) and the support rods (42) are arranged on the base (4) at intervals, the placing disc (5) is rotationally connected with the upper ends of the support rods (42), a plurality of purifying pipes (1) are arranged on the placing disc (5) at intervals along the circumferential direction, a piston rod (3) can be positioned right above one of the purifying pipes (1), and a driving assembly (6) for driving the piston rod (3) to move downwards to be inserted into the purifying pipe (1) so as to push samples in the purifying pipes (1) to flow out is arranged on the frame (41); The driving assembly (6) comprises a mounting rod (61), a moving block (62), a screw rod (63) and a motor (64), wherein the screw rod (63) is vertically connected in the frame (41) in a rotating mode, the moving block (62) is vertically connected in the frame (41) in a sliding mode and is in threaded connection with the screw rod (63), one end of the mounting rod (61) is fixedly connected with the side wall of the moving block (62), the motor (64) is installed in the base (4), an output shaft of the motor (64) is fixedly connected with the screw rod (63) in a coaxial mode, and the piston rod (3) is fixed on the mounting rod (61); The device is characterized in that a plurality of accommodating holes (51) for inserting and placing the purifying pipe (1) are formed in the accommodating disc (5) along the circumferential direction, a plurality of arc pressing blocks (7) positioned on the wall of the accommodating holes (51) are arranged in the accommodating disc (5), and the accommodating disc (5) is provided with an adjusting mechanism (8) for synchronously driving the plurality of arc pressing blocks (7) to press and fix the purifying pipe (1) or keep away from the purifying pipe (1); The adjusting mechanism (8) comprises a cam (81), a fixed rod (82), a plurality of abutting rods (83), a plurality of springs (84), a plurality of guide sleeves (85) and a plurality of abutting blocks (86), wherein the fixed rod (82) is connected with the cam (81) through coaxial keys, so that the fixed rod (82) can drive the cam (81) to synchronously rotate, meanwhile, the fixed rod (82) can axially move along the cam (81), a fixed groove (52) fixedly spliced with the fixed rod (82) is formed in the bottom in the placing disc (5), vertical insections are formed in the fixed rod (82) along the circumferential direction, tooth grooves matched with the insections of the fixed rod (82) are formed in the inner wall of the center of the cam (81) and the fixed groove (52) along the circumferential direction, the guide sleeves (85) are fixedly arranged at the inner bottom of the placing disc (5) between the arc abutting blocks (7) and the cam (81), the abutting rods (83) are movably spliced in the guide sleeves (85), one end of each arc abutting rod (83) is fixedly connected with the abutting blocks (7), the abutting blocks (86) are fixedly connected with the abutting blocks (86) along the circumferential direction, one end of each abutting block (84) is fixedly arranged on the corresponding to the corresponding abutting block (84), the other end is abutted against the abutting block (86).
2. 2. The device for purifying the water with high efficiency based on the QuEChERS method as set forth in claim 1, wherein the fixed rod (82) extends out of the upper end of the placing plate (5) and is fixedly provided with a rotary button (87) with a diameter larger than that of the fixed rod (82).
3. 3. The device of claim 1, wherein a supporting plate (53) is arranged at the upper end of the supporting rod (42), the placing plate (5) is rotatably connected to the upper surface of the supporting plate (53), a first magnet (54) is embedded in the upper surface of the supporting plate (53), and a plurality of second magnets (55) which can be mutually attracted with the first magnets (54) are embedded in the lower surface of the placing plate (5) at positions corresponding to the accommodating holes (51).
4. 4. The device for purifying the water with high efficiency based on the QuEChERS method as set forth in claim 1, wherein a yielding port (43) for placing the collecting bottle is arranged on one side of the base (4).

Description

High-efficient purifier based on QuEChERS method Technical Field The application relates to the technical field of sample pretreatment, in particular to a high-efficiency purifying device based on a QuEChERS method. Background The QuEChERS method is a sample pretreatment method widely applied to the fields of agricultural products, traditional Chinese medicines and the like, and is abbreviated as Quick, easy, cheap, effective, rugged and Safe, and means Quick, simple, economical, efficient, durable and Safe. The method is widely used for measuring the residual quantity of various pesticides and metabolites thereof in plant-derived foods. The QuEChERS method utilizes the interaction of the adsorbent filler and impurities in the sample matrix, and achieves the purposes of impurity removal and purification by adsorbing the impurities. After the sample is extracted by acetonitrile (or acidified acetonitrile), salting out and layering are carried out by adopting extraction salt, then PSA or other adsorbents are combined with most of interferents in the matrix by utilizing matrix dispersion extraction mechanism, and the substances are removed by a centrifugal mode, so that the purifying effect is achieved. The method comprises the specific steps of extracting, namely weighing a sample, adding the sample into a centrifuge tube, adding acetonitrile, shaking for 1min, and centrifuging for 5min at 4200 r/min. Purifying, namely sucking the supernatant in the centrifuge tube into another centrifuge tube, adding adsorbent such as PSA and the like, mixing by vortex for 1min, and centrifuging for 5min at 4200 r/min. The current purification process is complicated and has low purification efficiency, so the purification process needs to be improved. Disclosure of utility model In order to improve the sample purification efficiency, the application provides a high-efficiency purification device based on a QuEChERS method. The application provides a high-efficiency purifying device based on a QuEChERS method, which adopts the following technical scheme: the utility model provides a high-efficient purifier based on QuEChERS method, includes the purifying tube that fills the adsorbent, microporous filter membrane is installed to purifying tube bottom position, purifying tube demountable installation has the piston rod. Through adopting above-mentioned technical scheme, after the sample is through centrifuging in centrifuging tube vibration, absorb supernatant to the purge tube in, then insert the piston rod in the purge tube with the supernatant that draws through adsorbent and millipore filter adsorption impurity in the purge tube to purify the extract, compare current in carrying out vibration and centrifugation through another centrifuging tube, improved operating efficiency, thereby improve the purification efficiency of sample. Preferably, still including base, frame, bracing piece, placing the dish, frame and bracing piece are all installed on the base at the interval, place the dish and rotate and connect the bracing piece upper end, the purge tube sets up a plurality of, and is a plurality of the purge tube is placed on placing the dish along circumferencial direction interval, the piston rod can be located directly over one of them purge tube, be provided with the drive in the frame the piston rod moves down and inserts the purge tube to promote the drive assembly that the sample in the purge tube flows out. Through adopting above-mentioned technical scheme, the sample supernatant that the centrifuging tube draws shifts to one of them purge tube of placing the dish, then rotates the placing plate to make the purge tube that has the supernatant be in the piston rod, move down through drive assembly drive piston rod, thereby release the purge tube with the supernatant in the purge tube, can change to the purge tube that has used in this process, perhaps carry out the packing of adsorbent to the purge tube and change, perhaps purify the same or different sample liquid in proper order through a plurality of purge tubes, thereby improve purification efficiency. Preferably, the driving assembly comprises a mounting rod, a moving block, a screw rod and a motor, wherein the screw rod is vertically and rotationally connected in the frame, the moving block is vertically and slidingly connected in the frame and is in threaded connection with the screw rod, one end of the mounting rod is fixedly connected with the side wall of the moving block, the motor is mounted in the base, an output shaft of the motor is coaxially and fixedly connected with the screw rod, and the piston rod is fixed on the mounting rod. Through adopting above-mentioned technical scheme, motor drive lead screw rotates to drive the movable block and slide from top to bottom in the frame, thereby drive the piston rod that fixes on the installation pole and reciprocate, thereby realize the removal of piston rod automatically. Preferably, the placing tray is prov