Automatic pretreatment equipment for batch samples

Abstract

The utility model discloses automatic pretreatment equipment for batch samples, and relates to the technical field of sample pretreatment. According to the automatic pretreatment equipment for the batch samples, the disposable filter paper funnel is connected to the upper part of the kit, when the samples are added into the disposable filter paper funnel and then conveyed into an analysis and detection instrument, the samples can be automatically filtered under the action of gravity, and before entering the analysis and detection instrument, the samples can be automatically filtered through the cooperation of the negative pressure frame; according to the utility model, special solid-liquid separation automation equipment is not needed, the filtering operation can be realized in the original automatic detection process, and the filtering effect and the detection efficiency of a sample are ensured while the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sample pre-processing, in particular to automatic pre-processing equipment for batch samples. Background Art

[0002] Sample pretreatment, also known as sample pretreatment, is a key step in food analysis and testing. For example, the detection and treatment of mycotoxins and pesticide residues in feed requires liquid addition, extraction, filtration or centrifugation, purification and other means. Referring to the Chinese patent, application number: "202011561359.8" "A kind of agricultural and sideline products pesticide content detection equipment", this patent solves the current pesticide detection pre-processing process is many, mainly using manual tools to operate step by step. However, there are still many sample pretreatment processes and complex filtration methods, which affect the operation effect and efficiency. In this regard, we propose an automated batch sample pretreatment equipment to solve the above problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an automated pre-processing device for batch samples, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: an automated batch sample pre-treatment device, comprising a body, a conveyor belt is rotatably connected inside the body, and a plurality of carrying plates are installed outside the conveyor belt for batch conveying reagent kits, and a disposable filter paper funnel is connected to the top of the reagent kits;

[0005] A pipetting plate is provided on one side of the top surface of the body, and a plurality of liquid guide nozzles are fixed inside the pipetting plate for introducing a solid-liquid mixed sample into the test kit;

[0006] The top surface of the machine body is provided with a positioning frame, and a negative pressure frame is slidably arranged inside the positioning frame for adsorbing and removing the disposable filter paper funnel after use.

[0007] Preferably, a concave frame is fixed on the outside of the positioning frame, and a feeding frame is slidably installed on the top surface of the concave frame. A feeding belt is rotatably connected inside the feeding frame for conveying the used disposable filter paper funnel. A pushing cylinder is fixed on the top surface of the concave frame for driving the feeding frame to translate.

[0008] Preferably, a hydraulic cylinder is fixed inside the positioning frame to drive the negative pressure frame to slide up and down inside the positioning frame, a negative pressure tube is fixed inside the negative pressure frame, and a plurality of negative pressure suction cups are fixed at the bottom, the plurality of negative pressure suction cups are interconnected with the negative pressure tube, a negative pressure device is fixed outside the positioning frame, and the negative pressure device is interconnected with the negative pressure tube.

[0009] Preferably, the pipetting plate is slidably installed inside the side frame, and the side frame is fixed on one side of the top surface of the body. An electric push rod is fixed inside the side frame to drive the pipetting plate to slide inside the side frame. Electromagnetic valves are provided inside the multiple liquid guide nozzles, and connecting tubes are installed at the ends.

[0010] Preferably, a slide groove is provided on the inner side of the side frame, a support rod is fixed to the bottom of the pipetting plate, and the support rod is slidably installed inside the slide groove.

[0011] Preferably, a feed trough is provided inside the feed rack, the feed belt is rotatably connected inside the feed trough, and the bottom of the feed trough is provided as an inclined surface.

[0012] Preferably, a baffle plate frame is fixed to the top surface of the feeding rack.

[0013] The utility model provides a batch sample automatic pre-processing device. Compared with the prior art, it has the following beneficial effects:

[0014] (1) The batch sample automated pretreatment equipment has a disposable filter paper funnel connected to the top of the reagent box. When the sample is added into the disposable filter paper funnel and then transported to the inside of the analytical detection instrument, the sample can be automatically filtered by gravity. Before entering the analytical detection instrument, the used disposable filter paper funnel can be automatically removed by the cooperation of the negative pressure rack. The utility model does not require special solid-liquid separation automated equipment, and the filtering operation can be realized in the original automated detection process. It is convenient to use and ensures the filtering effect and detection efficiency of the sample.

[0015] (2) The batch sample automated pretreatment equipment, through the cooperation of the negative pressure rack and the feeding rack, when the test kit reaches the bottom of the negative pressure rack, when the negative pressure device is operated, it can generate negative pressure through the negative pressure tube to make multiple negative pressure suction cups to adsorb the disposable filter paper funnel, and then as the feeding rack moves to the bottom of the negative pressure rack, the dropped disposable filter paper funnel is output, which can reduce the interference with subsequent detection and avoid the dripping of liquid during the output of the disposable filter paper funnel.

[0016] (3) The automated batch sample pretreatment equipment can prevent the disposable filter paper funnel from falling during transportation through the cooperation of the baffle plate rack. At the same time, the residual liquid inside the disposable filter paper funnel can flow out along the inclined surface at the bottom of the feed trough, thereby preventing the liquid from being retained and dripping, which may affect subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2This is a schematic diagram of the structure of the side frame and the pipetting plate of the utility model;

[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of point A;

[0020] Figure 4 This is a schematic diagram of the structure of the negative pressure rack and the feeding rack of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the negative pressure frame of the utility model;

[0022] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of point B.

[0023] In the figure: 1. body; 101. conveyor belt; 2. side frame; 201. slide; 202. electric push rod; 3. pipette plate; 301. support rod; 4. liquid guide nozzle; 401. connecting pipe; 402. solenoid valve; 5. carrying plate; 501. reagent box; 502. disposable filter paper funnel; 6. positioning frame; 601. negative pressure device; 602. hydraulic cylinder; 7. concave frame; 701. push cylinder; 8. feeding frame; 801. feeding belt; 802. baffle plate frame; 803. feeding trough; 9. negative pressure frame; 901. negative pressure pipe; 902. negative pressure suction cup. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 6 The utility model provides two technical solutions, which specifically include the following embodiments:

[0026] Embodiment 1:

[0027] refer to Figure 1 , an automated batch sample pre-treatment device, comprising a body 1, a conveyor belt 101 is rotatably connected inside the body 1, the conveyor belt 101 is driven by a separate servo motor, and a plurality of carrier plates 5 are installed on the outer side of the conveyor belt 101 for batch transport of reagent kits 501, the reagent kits 501 are placed on the carrier plates 5, and are batch transported to the inside of an analysis and detection instrument by the operation of the conveyor belt 101, the tops of the reagent kits 501 are connected to disposable filter paper funnels 502, and the liquid outlet at the bottom of the disposable filter paper funnel 502 is connected to the sample hole above the reagent kit 501;

[0028] For further reference, Figure 2 , Figure 3 A pipetting plate 3 is provided on one side of the top surface of the body 1, and a plurality of liquid guide nozzles 4 are fixed inside the pipetting plate 3 for introducing a solid-liquid mixed sample into the reagent box 501. The plurality of liquid guide nozzles 4 are adapted to the positions of the plurality of reagent boxes 501. The prepared solid-liquid mixed sample is transported to the inside of the liquid guide nozzle 4 through the pump body, and then the solid-liquid mixed sample is transported to the disposable filter paper funnel 502 by the liquid guide nozzle 4 for filtration;

[0029] For further reference, Figure 4 The top surface of the body 1 is provided with a positioning frame 6, and a negative pressure frame 9 is slidably provided inside the positioning frame 6, which is used to adsorb and remove the disposable filter paper funnel 502 after use. After the solid-liquid mixed sample is transported to the disposable filter paper funnel 502, the sample to be tested enters the reagent box 501 through the filtration of the disposable filter paper funnel 502. As the reagent box 501 is transported to the inside of the analysis and detection instrument, when the reagent box 501 reaches the bottom of the negative pressure frame 9, the negative pressure frame 9 moves downward to absorb multiple disposable filter paper funnels 502, so that the disposable filter paper funnel 502 is separated from the corresponding reagent box 501, so that the reagent box 501 is transported to the inside of the analysis and detection instrument;

[0030] Specifically, refer to Figure 4 ,- Figure 6 A concave frame 7 is fixed on the outer side of the positioning frame 6, and a feeding frame 8 is slidably installed on the top surface of the concave frame 7. A feeding belt 801 is rotatably connected inside the feeding frame 8 to transport the disposable filter paper funnel 502 after use. A pushing cylinder 701 is fixed on the top surface of the concave frame 7 to drive the feeding frame 8 to move horizontally. When the negative pressure frame 9 moves downward to absorb multiple disposable filter paper funnels 502 and then moves upward to reset, the feeding frame 8 can move to the bottom of the disposable filter paper funnel 502 through the operation of the pushing cylinder 701, so that the disposable filter paper funnel 502 can fall onto the feeding belt 801, and the disposable filter paper funnel 502 is output as the feeding belt 801 runs;

[0031] After the disposable filter paper funnel 502 is adsorbed and separated from the corresponding reagent kit 501, the negative pressure rack 9 drives the disposable filter paper funnel 502 to move up and reset, and the feeding rack 8 moves horizontally to the bottom of the disposable filter paper funnel 502, and then the reagent kit 501 is transported to avoid liquid dripping;

[0032] Specifically, refer to Figure 4-Figure 6A hydraulic cylinder 602 is fixed inside the positioning frame 6, which is used to drive the negative pressure frame 9 to slide up and down inside the positioning frame 6. A negative pressure pipe 901 is fixed inside the negative pressure frame 9, and a plurality of negative pressure suction cups 902 are fixed at the bottom. The plurality of negative pressure suction cups 902 are interconnected with the negative pressure pipe 901. A negative pressure device 601 is fixed outside the positioning frame 6. The negative pressure device 601 is interconnected with the negative pressure pipe 901. When the negative pressure device 601 is operated, the plurality of negative pressure suction cups 902 can generate negative pressure through the negative pressure pipe 901, so as to adsorb the disposable filter paper funnel 502.

[0033] Specifically, refer to Figure 2-Figure 3 , the pipetting plate 3 is slidably installed inside the side frame 2, the side frame 2 is fixed to one side of the top surface of the body 1, and an electric push rod 202 is fixed inside the side frame 2 to drive the pipetting plate 3 to slide inside the side frame 2. A plurality of liquid guide nozzles 4 are each provided with an electromagnetic valve 402, and a connecting pipe 401 is installed at the end. The operation of the electric push rod 202 can drive the pipetting plate 3 and the plurality of liquid guide nozzles 4 to move downward until the liquid guide nozzle 4 is inserted into the disposable filter paper funnel 502, and the electromagnetic valve 402 is opened to allow the solid-liquid mixed sample to enter the disposable filter paper funnel 502;

[0034] For further reference, Figure 3 A slide groove 201 is provided on the inner side of the side frame 2, and a support rod 301 is fixed to the bottom of the pipetting plate 3. The support rod 301 is slidably installed inside the slide groove 201. When the pipetting plate 3 slides up and down, it can simultaneously drive the support rod 301 to slide inside the slide groove 201, thereby ensuring the operation stability of the pipetting plate 3;

[0035] During the pretreatment process, the sample to be tested needs to be treated with liquid first, and then solid-liquid mixing is achieved by ultrasonic vibration or magnetic stirring to obtain a solid-liquid mixed sample, and then the solid-liquid mixed sample is extracted; the solid-liquid mixed sample is transported to the corresponding disposable filter paper funnel 502 through multiple liquid guide nozzles 4, so that the solid-liquid mixed sample is filtered by gravity during the transportation process and enters the reagent box 501; the reagent box 501 is transported to the inside of the analysis and detection instrument for detection. During the transportation process, the used disposable filter paper funnel 502 is adsorbed by the negative pressure rack 9, and then the used disposable filter paper funnel 502 is sent out by the feeding rack 8.

[0036] Embodiment 2:

[0037] Based on Example 1, on the basis of Example 1, refer to Figure 5 , Figure 6A feed trough 803 is provided inside the feed rack 8, and a feed belt 801 is rotatably connected inside the feed trough 803, and the bottom of the feed trough 803 is provided with an inclined surface; a baffle plate frame 802 is fixed to the top surface of the feed rack 8, and the cooperation of the baffle plate frame 802 can prevent the disposable filter paper funnel 502 from falling during the transportation process after use, and at the same time, the residual liquid inside the disposable filter paper funnel 502 can flow out along the inclined surface at the bottom of the feed trough 803, so as to prevent the subsequent detection from being affected by liquid dripping.

[0038] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0039] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An automated batch sample pre-treatment device, comprising a body (1), characterized in that: The body (1) is internally rotatably connected to a conveyor belt (101), and a plurality of carrier plates (5) are installed outside the conveyor belt (101) for batch conveying the reagent kits (501), and the tops of the reagent kits (501) are all connected to disposable filter paper funnels (502); A pipetting plate (3) is provided on one side of the top surface of the body (1), and a plurality of liquid guide nozzles (4) are fixed inside the pipetting plate (3) for introducing a solid-liquid mixed sample into the reagent kit (501); A positioning frame (6) is provided on the top surface of the machine body (1), and a negative pressure frame (9) is slidably disposed inside the positioning frame (6) for adsorbing and removing the disposable filter paper funnel (502) after use.

2. The automated batch sample pre-treatment device according to claim 1, characterized in that: A concave frame (7) is fixed on the outer side of the positioning frame (6), and a feeding frame (8) is slidably mounted on the top surface of the concave frame (7). A feeding belt (801) is rotatably connected inside the feeding frame (8) for conveying the disposable filter paper funnel (502) after use. A pushing cylinder (701) is fixed on the top surface of the concave frame (7) for driving the feeding frame (8) to move horizontally.

3. The automated batch sample pre-treatment device according to claim 1, characterized in that: A hydraulic cylinder (602) is fixed inside the positioning frame (6) for driving the negative pressure frame (9) to slide up and down inside the positioning frame (6); a negative pressure tube (901) is fixed inside the negative pressure frame (9), and a plurality of negative pressure suction cups (902) are fixed at the bottom; the plurality of negative pressure suction cups (902) are interconnected with the negative pressure tube (901); a negative pressure device (601) is fixed outside the positioning frame (6); the negative pressure device (601) is interconnected with the negative pressure tube (901).

4. The automated batch sample pre-treatment device according to claim 1, characterized in that: The pipetting plate (3) is slidably mounted inside the side frame (2), and the side frame (2) is fixed to one side of the top surface of the machine body (1). An electric push rod (202) is fixed inside the side frame (2) for driving the pipetting plate (3) to slide inside the side frame (2). A plurality of liquid guide nozzles (4) are each provided with an electromagnetic valve (402), and a connecting pipe (401) is installed at the end.

5. The automated batch sample pre-treatment device according to claim 4, characterized in that: A slide groove (201) is provided on the inner side of the side frame (2), and a support rod (301) is fixed to the bottom of the transfer plate (3), and the support rod (301) is slidably installed inside the slide groove (201).

6. The automated batch sample pre-treatment device according to claim 2, characterized in that: A feeding trough (803) is provided inside the feeding rack (8), and the feeding belt (801) is rotatably connected inside the feeding trough (803), and the bottom of the feeding trough (803) is provided with an inclined surface.

7. The automated batch sample pre-treatment device according to claim 6, characterized in that: A material blocking plate frame (802) is fixed to the top surface of the feeding frame (8).

Images