Headspace gas chromatography sample pretreatment automatic equipment for detecting ethanol in blood

Abstract

The utility model provides automatic headspace gas chromatography sample pretreatment equipment for ethanol detection in blood, which relates to the technical field of ethanol detection in blood and comprises a treatment box, six placing holes are formed in the treatment box, and limiting clamping plates are arranged on two sides of each placing hole. And a driving structure for driving the two limiting clamping plates to move in the same direction or opposite directions is arranged in the treatment box. Through the arrangement of six placing holes, a plurality of headspace bottles can be placed at the same time, so that samples in the headspace bottles can be treated at the same time, and through the operation of two motors, two bidirectional screw rods can be driven to rotate, so that two moving plates move in the same direction or opposite directions under the limiting of limiting columns; according to the headspace bottle clamping device, the limiting clamping plates on the two sides of the containing holes can be driven to move face to face or oppositely, so that the headspace bottles placed in the containing holes can be clamped, and the headspace bottles of the same model can be placed in every three containing holes through two sets of driving structures.

Description

TECHNICAL FIELD

[0001] The utility model relates to blood alcohol detection technical field especially relates to blood alcohol detection headspace gas chromatography sample pretreatment automatic equipment. BACKGROUND

[0002] Driving under the influence of alcohol and drunk driving are illegal behaviors that seriously endanger road traffic safety, which can lead to a substantial increase in traffic accidents and pose a great threat to people's life and property safety. In order to effectively combat the behavior of driving under the influence of alcohol and drunk driving, the traffic law enforcement department needs to accurately and quickly detect the ethanol content in blood to determine whether the driver is illegal, which puts higher requirements on blood alcohol detection technology and equipment.

[0003] The blood alcohol detection headspace gas chromatography sample pretreatment automatic equipment in the prior art can only process the sample in a single headspace bottle when processing the sample, which is very inefficient, has great limitations, and has poor practicality. In addition, the blood alcohol detection headspace gas chromatography sample pretreatment automatic equipment in the prior art cannot process samples in headspace bottles of various widths, and cannot eject the samples after processing. Since the headspace bottle may match the placement hole of the processing box, it is inconvenient to take out, has great limitations, and has poor practicality. UTILITY MODEL CONTENT

[0004] The utility model discloses a blood alcohol detection headspace gas chromatography sample pretreatment automatic equipment to solve the problems in the prior art that only the sample in a single headspace bottle can be processed when processing the sample, which is very inefficient, and that samples in headspace bottles of various widths cannot be processed, and the samples cannot be ejected after processing. Since the headspace bottle may match the placement hole of the processing box, it is inconvenient to take out, has great limitations, and has poor practicality.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a blood alcohol detection headspace gas chromatography sample pretreatment automatic equipment includes a processing box, six placement holes are formed in the processing box, limit clamping plates are arranged on both sides of each placement hole, a driving structure for driving the two limit clamping plates to move towards or away from each other is arranged in the processing box, a first telescopic rod is installed on the inner bottom wall of the processing box, a top plate is fixed to the output end of the first telescopic rod, a top block matched with the placement hole is fixed to the top end of the top plate, and a heating sheet is installed on the top end of the top block.

[0006] Preferably, the driving structure comprises a motor arranged in the treatment box, an output end of the motor is fixed with a bidirectional screw rod, outer walls of the bidirectional screw rod are threadedly connected with moving plates at two ends, the moving plates are slidably connected with limiting columns at one end away from the bidirectional screw rod, and the limiting clamping plates are fixed at opposite ends of the moving plates.

[0007] Preferably, a bottom plate is arranged below the treatment box, and four second telescopic rods are arranged at four corners of the top end of the bottom plate and fixed to the treatment box.

[0008] Preferably, two communication grooves are arranged in the treatment box, the two motors are arranged on inner walls of the two communication grooves, the bidirectional screw rod is rotatably connected with the inner wall of the communication groove at one end away from the motor, and the limiting columns are fixed to the inner wall of the communication groove at two ends.

[0009] Preferably, an inner cavity is arranged at the bottom end of the placement hole in the treatment box, and the locating end of the first telescopic rod is arranged on the inner bottom wall of the inner cavity.

[0010] Preferably, a top cover is pivotally connected to the top end of the treatment box, a push plate is fixed to one end of the top cover, and a butt joint hole matched with the placement hole is arranged at the top end of the top cover.

[0011] Compared with the prior art, the device has the advantages and positive effects that;

[0012] In the device, six placement holes are arranged, so that multiple headspace bottles can be placed simultaneously, and the samples in the multiple headspace bottles can be treated simultaneously; two motors are arranged, so that the two bidirectional screw rods can be driven to rotate, the two moving plates can be driven to move towards or away from each other under the limiting of the limiting columns, the limiting clamping plates on the two sides of the placement hole can be driven to move towards or away from each other, and the headspace bottles placed in the placement hole can be clamped; two groups of driving structures are arranged, so that every three placement holes can place headspace bottles of the same type, the device can clamp and fix two different types of headspace bottles simultaneously, and the practicability is higher; the first telescopic rod is arranged, so that the top plate can be driven to ascend and descend, the top block fixed to the bottom end of the top plate can be driven to ascend and descend, when the treatment is completed, the headspace bottles in the placement hole can be driven to ascend by the ascending of the top block, and the headspace bottles can be conveniently taken out by the staff, and the practicability is higher. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A perspective view of a blood ethanol detection headspace gas chromatography sample pretreatment automatic equipment is provided for the device.

[0014] Figure 2 A sectional view of the blood ethanol detection headspace gas chromatography sample pretreatment automatic equipment is provided for the device.

[0015] Figure 3 This invention presents a schematic diagram of the drive structure of an automated headspace gas chromatography sample pretreatment device for the detection of ethanol in blood.

[0016] Figure 4 This invention presents a schematic diagram of the external structure of the top block of an automated headspace gas chromatography sample pretreatment device for the detection of ethanol in blood.

[0017] Legend: 1. Processing box; 2. Top cover; 3. Push plate; 4. Placement hole; 5. Connecting groove; 6. Limiting clamp; 7. Drive structure; 701. Motor; 702. Bidirectional screw; 703. Moving plate; 704. Limiting post; 8. Inner cavity; 9. First telescopic rod; 10. Top plate; 11. Top block; 12. Heating element; 13. Second telescopic rod; 14. Bottom plate; 15. Docking hole. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, such as Figures 1-4 As shown, this utility model provides an automated sample pretreatment device for headspace gas chromatography in the detection of ethanol in blood, including a processing box 1. The processing box 1 has six placement holes 4, and each placement hole 4 has a limiting clamp 6 on both sides. The processing box 1 is provided with a driving structure 7 for driving the two limiting clamps 6 to move in opposite directions. A first telescopic rod 9 is installed on the inner bottom wall of the processing box 1. A top plate 10 is fixed to the output end of the first telescopic rod 9. A top block 11 matching the placement hole 4 is fixed to the top of the top plate 10. A heating element 12 is installed on the top of the top block 11.

[0021] The effect achieved by the whole embodiment 1 is that through the operation of the two groups of driving structures 7, the limiting clamping plates 6 on both sides of each placement hole 4 can be moved towards or away from each other, the headspace bottle placed in the placement hole 4 can be clamped and fixed, and through the arrangement of two groups of driving structures 7, the same model of headspace bottle can be placed in every three placement holes 4, so that the device can clamp and fix two different models of headspace bottles at the same time, and the practicability is stronger. Through the operation of the first telescopic rod 9, the top plate 10 can be lifted, so that the top block 11 fixed at the bottom end thereof is lifted. When the processing is completed, the lifting of the top block 11 can push the headspace bottle in the placement hole 4 to rise, which is convenient for the staff to take out, and the practicability is stronger. Through the arrangement of the heating sheet 12, the blood in the headspace bottle can be heated and treated. Under a certain temperature, ethanol in the blood will volatilize into the upper gas phase space of the headspace bottle and reach gas-liquid equilibrium with the liquid phase. Through the external automatic sampling device, a certain amount of headspace gas is accurately extracted and injected into the external gas chromatograph for separation and detection. The ethanol and other impurities are separated by using the separation capacity of the gas chromatographic column, and then the content of ethanol is detected by the detector. The concentration of ethanol in the blood is calculated according to the internal standard method or external standard method.

[0022] As shown in the embodiment 2, Figures 1-4 The driving structure 7 comprises a motor 701 arranged in the treatment box 1. The output end of the motor 701 is fixed with a bidirectional screw rod 702. The outer wall of the bidirectional screw rod 702 is threadedly connected with a moving plate 703 at both ends. The moving plate 703 is slidably connected with a limiting column 704 at the end away from the bidirectional screw rod 702. The two limiting clamping plates 6 are fixed at the opposite ends of the two moving plates 703. The bottom plate 14 is arranged below the treatment box 1. The top end of the bottom plate 14 is provided with a second telescopic rod 13. The output end of the second telescopic rod 13 is fixed with the treatment box 1. Two communication grooves 5 are arranged in the treatment box 1. The two motors 701 are arranged on the inner walls of the two communication grooves 5. The end of the bidirectional screw rod 702 away from the motor 701 is rotatably connected with the inner wall of the communication groove 5. The two ends of the limiting column 704 are fixed with the inner wall of the communication groove 5. The bottom end of the placement hole 4 in the treatment box 1 is provided with an inner cavity 8. The sitting end of the first telescopic rod 9 is arranged on the inner bottom wall of the inner cavity 8. The top end of the treatment box 1 is pivotally connected with a top cover 2. The top cover 2 is fixed with a push plate 3 at one end. The top end of the top cover 2 is provided with a butt joint hole 15 matched with the placement hole 4.

[0023] The effect achieved by the whole embodiment 2 is that the two bidirectional screws 702 are driven to rotate by the operation of the two motors 701, the two moving plates 703 are moved towards or away from each other under the limiting of the limiting columns 704, the limiting clamping plates 6 on both sides of the placing holes 4 are moved towards or away from each other, the headspace bottle placed in the placing hole 4 is clamped, the processing box 1 is driven to ascend and descend as a whole by the operation of the four second telescopic rods 13, and thus is suitable for workers with different heights, and the automatic sampling device outside can be connected with the headspace bottle in the processing box 1 through the docking hole 15.

[0024] Working principle: when the device is used, the headspace bottle containing blood, a proper amount of diluent, an internal standard substance and the like is placed into each placing hole 4, the two bidirectional screws 702 are driven to rotate by the operation of the two motors 701, the two moving plates 703 are moved towards or away from each other under the limiting of the limiting columns 704, the limiting clamping plates 6 on both sides of the placing holes 4 are moved towards or away from each other, and thus the headspace bottle placed in the placing hole 4 is clamped, at this time, the top cover 2 is closed, the automatic sampling device outside is connected with the headspace bottle in the processing box 1 through the docking hole 15, the ethanol in the blood is volatilized into the upper gas phase space of the headspace bottle under a certain temperature by the heating of the heating sheet 12, and reaches gas-liquid equilibrium with the liquid phase. A certain amount of headspace gas is accurately extracted by the external automatic sampling device and injected into the gas chromatograph outside for separation and detection. The ethanol and other impurities are separated by the separation capacity of the gas chromatographic column, the content of the ethanol is detected by the detector, the concentration of the ethanol in the blood is calculated according to the internal standard method or the external standard method, after the processing, the top cover 2 is opened, the limiting clamping plates 6 are loosened, the top plate 10 is driven to ascend and descend by the operation of the first telescopic rod 9, the top block 11 fixed at the bottom end thereof is driven to ascend and descend, the headspace bottle in the placing hole 4 is pushed to ascend, and the staff member is convenient to take out.

[0025] The above is only a preferred embodiment of the present application, and does not limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still falls within the protection scope of the technical scheme of the present application.

Claims

1. An automatic apparatus for the sample pre-treatment of blood for the headspace gas chromatography of ethanol, comprising a treatment box (1), characterized in that: The processing box (1) is provided with six placing holes (4), and each placing hole (4) is provided with a limiting clamping plate (6) on both sides. The processing box (1) is provided with a driving structure (7) for driving the two limiting clamping plates (6) to move towards or away from each other. The inner bottom wall of the processing box (1) is provided with a first telescopic rod (9), and the output end of the first telescopic rod (9) is fixed with a top plate (10). The top end of the top plate (10) is fixed with a top block (11) matched with the placing hole (4), and the top end of the top block (11) is provided with a heating sheet (12).

2. The automatic apparatus for sample pre-treatment of headspace gas chromatography for ethanol detection in blood according to claim 1, characterized in that: The driving structure (7) comprises a motor (701) arranged in the processing box (1), and the output end of the motor (701) is fixed with a bidirectional screw rod (702). The outer wall of the bidirectional screw rod (702) is threadedly connected with a moving plate (703) at both ends. The ends of the two moving plates (703) away from the bidirectional screw rod (702) are slidably connected with a limiting column (704), and the two limiting clamping plates (6) are respectively fixed on the opposite ends of the two moving plates (703).

3. The automatic apparatus for sample pre-treatment of headspace gas chromatography for ethanol detection in blood according to claim 1, characterized in that: The bottom of the processing box (1) is provided with a bottom plate (14), and the top end of the bottom plate (14) is provided with a second telescopic rod (13). The output end of the second telescopic rod (13) is fixed with the processing box (1).

4. The automatic apparatus for sample pretreatment of headspace gas chromatography for ethanol detection in blood according to claim 2, characterized in that: The processing box (1) is provided with two communication grooves (5), and the two motors (701) are respectively arranged on the inner walls of the two communication grooves (5). The end of the bidirectional screw rod (702) away from the motor (701) is rotatably connected with the inner wall of the communication groove (5), and the two ends of the limiting column (704) are fixed with the inner wall of the communication groove (5).

5. The automatic apparatus for sample pre-treatment of headspace gas chromatography for ethanol detection in blood according to claim 1, characterized in that: The bottom end of the processing box (1) is provided with an inner cavity (8), and the sitting end of the first telescopic rod (9) is arranged on the inner bottom wall of the inner cavity (8).

6. The automatic apparatus for sample pre-treatment of headspace gas chromatography for ethanol detection in blood according to claim 1, characterized in that: The top end of the processing box (1) is provided with a top cover (2), and one end of the top cover (2) is fixed with a push plate (3). The top end of the top cover (2) is provided with a butt joint hole (15) matched with the placing hole (4).

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