Solid-phase extraction equipment for pesticide residues in tea leaves

Abstract

The utility model relates to the technical field of tea processing, and discloses tea pesticide residue solid-phase extraction equipment which comprises an extraction machine, a cover plate is movably connected to the front portion of the extraction machine through a shaft, a fixing frame is arranged in an inner cavity of the extraction machine, placement holes are evenly formed in the fixing frame, annular grooves are formed in the placement holes, and the annular grooves are communicated with the extraction machine. Ventilation pipelines are evenly arranged in the fixing frame and fixedly connected with the rear portion of the annular groove, annular air bags are fixedly installed at the joints of the ventilation pipelines and the annular groove, the annular air bags are connected with the annular groove in a clamped mode, air pumps are evenly and fixedly installed on the upper portion of the fixing frame, and connecting rods are evenly and fixedly installed at the bottom of the fixing frame; an annular air bag is inflated through an air pump, so that the annular air bag is expanded to fix a test tube, the stability of the test tube is improved, the air pressure in the annular air bag can be flexibly adjusted through the air pump, test tubes of different models can be conveniently fixed by the device, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea processing, in particular to a solid phase extraction device for tea pesticide residues. Background Art

[0002] Solid-phase extraction is a sample pretreatment technology developed in recent years. It is developed by combining liquid-solid extraction columns and liquid chromatography technology. It is mainly used for sample separation, purification and concentration. Compared with traditional liquid-liquid extraction, it can improve the recovery rate of analytes, more effectively separate analytes from interfering components, and reduce the sample pretreatment process. It is simple to operate, saves time and labor, and does not require special equipment. It is widely used in the fields of medicine, food, environment, commodity inspection, chemical industry, etc.

[0003] In the prior art, when planting and producing tea, it is necessary to perform solid phase extraction on the pesticide residues on the tea leaves. When fixing the test tubes, since the aperture size of most fixing devices is uniform, different types of test tubes cannot be fixed, and the applicability is poor. When fixing smaller test tubes, the test tubes may shake, and lack good stability, thereby affecting the accuracy of solid phase extraction. Therefore, in order to solve the above problems, the utility model proposes a solid phase extraction device for pesticide residues on tea leaves. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a solid-phase extraction device for pesticide residues in tea. The annular airbag is inflated by an air pump, so that the annular airbag can fix the test tube after expansion, avoiding large swings of the test tube and increasing the stability of the test tube. The air pressure inside the annular airbag can be flexibly adjusted by the air pump, which facilitates the device to fix test tubes of different models and improves the applicability of the device.

[0005] The utility model provides the following technical solution: a solid phase extraction device for pesticide residues in tea leaves, comprising an extractor, a cover plate movably connected to the front of the extractor through a shaft, a fixing frame provided in the inner cavity of the extractor, placement holes evenly opened on the fixing frame, the number of the placement holes being eight, an annular groove opened in the placement holes, ventilation pipes evenly opened in the fixing frame, the number of the ventilation pipes being three, the ventilation pipes being fixedly connected to the rear of the annular groove, an annular airbag being fixedly installed at the connection between the ventilation pipe and the annular groove, the annular airbag being clamped with the annular groove, air pumps evenly fixedly installed on the upper part of the fixing frame, the number of the air pumps being three and respectively fixedly connected to the left end of the ventilation pipe, connecting rods evenly fixedly installed on the bottom of the fixing frame, the number of the connecting rods being six, a movable plate fixedly installed at the bottom end of the connecting rod, the annular airbag is inflated by the air pump to expand and fix the test tube, thereby improving the stability of the test tube, the air pressure can be flexibly adjusted by the air pump, and the annular airbag is convenient for fixing test tubes of different models, thereby greatly improving the applicability of the device and enhancing the extraction efficiency of the device.

[0006] Preferably, the bottom of the moving plate is fixedly provided with two ridge strips which are symmetrically distributed left and right, and the bottom of the extraction machine cavity is provided with two grooves which are matched with the ridge strips, so that the moving plate can be flexibly moved in the bottom of the extraction machine cavity, thereby driving the test tube to move in and out.

[0007] Preferably, the bottom of the moving plate is fixedly provided with a fixed plate which is located between the two ridge strips, and a rack is fixedly arranged in the left inner cavity of the fixed plate, so that a transmission mechanism can be formed between the fixed plate and the motor, thereby facilitating the movement of the test tube fixing mechanism of the device.

[0008] Preferably, a motor is fixedly arranged in the bottom of the extraction machine cavity and between the two grooves, a gear is fixedly sleeved on the output shaft of the motor, and the gear is located in the inner cavity of the fixed plate and is externally extended to engage with the rack, so that the motor can drive the fixed plate to move, thereby improving the flexibility of the test tube fixing device and avoiding the need for manual movement of the test tube fixing frame.

[0009] Preferably, five liquid storage bottles are uniformly fixedly arranged on the upper part of the extraction machine, a liquid delivery pipe is fixedly arranged on the front of each liquid storage bottle, and the other end of the liquid delivery pipe is fixedly arranged on the upper part of the extraction machine, and a base is fixedly arranged on the bottom of the extraction machine, so that the device can use multiple extraction liquids at the same time, thereby effectively improving the solid-phase extraction efficiency of the device.

[0010] Preferably, a control panel is fixedly arranged on the front of the base, two wire connection openings are arranged on the right of the base, four supporting legs are uniformly fixedly arranged on the bottom of the base, and the control panel can be used to quickly control the device, and the extraction data can be quickly transmitted to other equipment through the wire connection openings, thereby facilitating data transmission.

[0011] Compared with the prior art, the device has the following advantages:

[0012] 1. The air pump is started through the control panel, air is input into the annular air bag through the air duct, the annular air bag is made of rubber with excellent elasticity, the test tube on the fixing frame is fixed in the mounting hole after the annular air bag is inflated, the air pressure in the annular air bag is adjusted through the air pump, different types of test tubes can be fixed by the device, the test tubes will not be damaged, the stability of the test tubes during extraction is effectively improved, large swinging of the test tubes is avoided, the test tubes are prevented from being tilted to affect solid-phase extraction, the applicability of the device is improved, and the extraction efficiency of the device is improved.

[0013] 2, by motor drive gear rotation, and utilize gear and rack interlock, make gear drive fixed plate move, because fixed plate fixed installation in mobile plate bottom, and ridge and sliding slot mutually fit, thus make motor drive mobile plate move in extraction machine inner chamber bottom, convenient fixed frame from extraction machine inner chamber remove, when test tube fix good, again by motor drive mobile plate remove in extraction machine inner chamber, close cover plate and carry out solid phase extraction, make extraction can in relatively closed environment, can avoid external factor to extraction cause adverse effect, prevent dust and so on influence liquid extraction purity, be favorable to promote device extraction effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the appearance structure schematic diagram of the utility model;

[0015] Figure 2 It is the structure schematic diagram when opening of the utility model;

[0016] Figure 3 It is the fixed frame internal pipeline structure schematic diagram of the utility model;

[0017] Figure 4 It is the fixed frame section structure schematic diagram of the utility model;

[0018] Figure 5 It is the mobile plate bottom structure schematic diagram of the utility model.

[0019] In the drawing: 1, extraction machine;2, cover plate;3, fixed frame;4, arrangement hole;5, annular groove;6, ventilation pipeline;7, annular air bag;8, air pump;9, connecting rod;10, mobile plate;11, ridge;12, sliding slot;13, fixed plate;14, rack;15, motor;16, gear;17, liquid storage bottle;18, liquid transfer tube;19, base;20, control panel;21, wiring port;22, support foot. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] Please refer to Figures 1-5The utility model relates to a kind of tea pesticide residue solid-phase extraction equipment, including extractor 1, cover plate 2 is movably connected with the front part of extractor 1 by shaft, fixed frame 3 is arranged in the cavity of extractor 1, evenly set up setting hole 4 on fixed frame 3, setting hole 4 is eight in number, annular groove 5 is set in setting hole 4, evenly set up ventilation pipeline 6 in fixed frame 3, ventilation pipeline 6 is three in number, ventilation pipeline 6 is fixedly connected with annular groove 5 rear portion, annular airbag 7 is fixedly installed in the joint of ventilation pipeline 6 and annular groove 5, annular airbag 7 is clamped with annular groove 5, air pump 8 is evenly fixedly installed on fixed frame 3 upper portion, air pump 8 is three in number and is respectively fixedly connected with ventilation pipeline 6 left end, connecting rod 9 is evenly fixedly installed on fixed frame 3 bottom, connecting rod 9 is six in number, moving plate 10 is fixedly installed in connecting rod 9 bottom end, staff places test tube in setting hole 4, starts air pump 8 to make it inhale air, gas is entered into annular airbag 7 by ventilation pipeline 6, annular airbag 7 is made of good elasticity rubber, so that test tube on fixed frame 3 is fixed in setting hole 4 after annular airbag 7 inflation expands, the gas pressure size inside annular airbag 7 is adjusted by air pump 8, so that device can be fixed with different models of test tube, the applicability of device is improved, and test tube is not damaged, effectively increase the stability of test tube when extracting, avoid test tube swing greatly, prevent test tube from dumping and affecting solid-phase extraction, it is favorable to improve the extraction work efficiency of device;

[0022] The bottom of the moving plate 10 is fixedly provided with two ridge strips 11 which are symmetrically distributed left and right. The bottom of the extraction machine 1 is provided with two grooves 12 which are matched with the ridge strips 11. The bottom of the moving plate 10 is fixedly provided with a fixed plate 13 which is located between the two ridge strips 11. The left side of the inner cavity of the fixed plate 13 is fixedly provided with a rack 14. The bottom of the inner cavity of the extraction machine 1 and between the two grooves 12 is fixedly provided with a motor 15. The output shaft of the motor 15 is fixedly provided with a gear 16 which is located in the inner cavity of the fixed plate 13 and is in engagement with the rack 14. The upper part of the extraction machine 1 is uniformly provided with five liquid storage bottles 17. The front part of each liquid storage bottle 17 is fixedly provided with a liquid delivery pipe 18. The other end of the liquid delivery pipe 18 is fixedly provided on the upper part of the extraction machine 1. The bottom of the extraction machine 1 is fixedly provided with a base 19. The front part of the base 19 is fixedly provided with a control panel 20. The right part of the base 19 is provided with two wire connection openings 21. The bottom of the base 19 is uniformly provided with four supporting legs 22. The cover plate 2 is opened and the motor 15 is started by the control panel 20. The motor 15 drives the gear 16 to rotate. The gear 16 and the rack 14 are in engagement with each other, so that the gear 16 drives the fixed plate 13 to move. Since the fixed plate 13 is fixedly provided on the bottom of the moving plate 10 and the ridge strips 11 are matched with the grooves 12, the motor 15 drives the moving plate 10 to move in the inner cavity of the extraction machine 1. The fixed frame 3 is conveniently moved out of the inner cavity of the extraction machine 1. After the test tube is fixed, the moving plate 10 is moved into the inner cavity of the extraction machine 1 by the motor 15. The cover plate 2 is closed for solid-phase extraction. A plurality of test tubes are driven into the inner cavity of the extraction machine 1 by the motor 15 for solid-phase extraction. The extraction can be carried out in a relatively closed environment, so that the adverse effects of external factors on the extraction can be avoided. Dust and the like can be prevented from affecting the purity of liquid extraction, which is beneficial to improve the extraction effect of the device.

[0023] Working principle: open cover 2 and control panel 20 control motor 15 start, motor 15 drive gear 16 rotation, the use of gear 16 and rack 14 meshing, so that gear 16 drive fixed plate 13 movement, because fixed plate 13 is fixedly installed in the mobile plate 10 bottom, and the ridge 11 and chute 12 fit each other, so that motor 15 drive mobile plate 10 in the extraction machine 1 inner chamber bottom movement, convenient fixed frame 3 from the extraction machine 1 inner chamber move out, the staff will be placed in the test tube in the installation hole 4, start air pump 8 makes it inhale air, gas through the air pipe 6 into the annular air bag 7, annular air bag 7 is made of good elasticity of rubber, annular air bag 7 into the gas after inflation, and then on the test tube in the installation hole 4 are clamped and fixed, when the test tube is fixed, move into the extraction machine 1 inner chamber by motor 15 drive mobile plate 10, close cover 2 and start the extraction machine 1 through the control panel 20 for solid phase extraction, so that the extract liquid into the test tube, extraction is completed repeatedly above operation makes the fixed frame 3 move out, through the air pump 8 makes the annular air bag 7 in the air pressure drop, convenient staff will take out the test tube.

Claims

1. A tea pesticide residue solid phase extraction device, comprising an extractor (1), characterized in that: The front of the extractor (1) is movably connected with a cover plate (2) through a shaft, a fixing frame (3) is arranged in the inner cavity of the extractor (1), uniform arrangement holes (4) are arranged on the fixing frame (3), the number of the arrangement holes (4) is eight, an annular groove (5) is arranged in the arrangement hole (4), uniform air ducts (6) are arranged in the fixing frame (3), the number of the air ducts (6) is three, the air duct (6) is fixedly connected with the rear part of the annular groove (5), a ring-shaped air bag (7) is fixedly installed at the connecting position of the air duct (6) and the annular groove (5), the ring-shaped air bag (7) is clamped with the annular groove (5), air pumps (8) are fixedly installed on the upper part of the fixing frame (3), the number of the air pumps (8) is three and they are fixedly connected with the left end of the air duct (6) respectively, connecting rods (9) are fixedly installed on the bottom of the fixing frame (3), the number of the connecting rods (9) is six, and the bottom of the connecting rod (9) is fixedly installed with a moving plate (10).

2. The tea pesticide residue solid-phase extraction device according to claim 1, characterized in that: The bottom of the moving plate (10) is fixedly installed with a ridge (11), the number of the ridge (11) is two and they are symmetrically distributed left and right, and the bottom of the inner cavity of the extractor (1) is provided with sliding grooves (12), the number of the sliding grooves (12) is two and they are matched with each other respectively.

3. The tea pesticide residue solid phase extraction device according to claim 2, characterized in that: The bottom of the moving plate (10) is fixedly installed with a fixed plate (13), the fixed plate (13) is located between the two ridges (11), and a rack (14) is fixedly installed on the left side in the inner cavity of the fixed plate (13).

4. The tea pesticide residue solid-phase extraction device according to claim 3, characterized in that: A motor (15) is fixedly installed on the bottom of the inner cavity of the extractor (1) and between the two sliding grooves (12), a gear (16) is fixedly sleeved on the output shaft of the motor (15), and the gear (16) is located in the inner cavity of the fixed plate (13) and is engaged with the rack (14) in extension.

5. The tea pesticide residue solid phase extraction device according to claim 1, characterized in that: Uniform liquid storage bottles (17) are fixedly installed on the upper part of the extractor (1), the number of the liquid storage bottles (17) is five, liquid delivery pipes (18) are fixedly installed on the front of the liquid storage bottles (17), the other end of the liquid delivery pipe (18) is fixedly installed on the upper part of the extractor (1), and a base (19) is fixedly installed on the bottom of the extractor (1).

6. The tea pesticide residue solid phase extraction device according to claim 5, characterized in that: A control panel (20) is fixedly installed on the front of the base (19), wire connection openings (21) are arranged on the right part of the base (19), the number of the wire connection openings (21) is two, and supporting legs (22) are fixedly installed on the bottom of the base (19), the number of the supporting legs (22) is four.

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