Sample preparation device for a compound

Abstract

The utility model belongs to the sample pretreatment technical field of compound, specifically discloses a kind of sample pretreatment device of compound, including base, the base upper end is equipped with sliding slot, the two-way screw is rotatably connected in the sliding slot, the one end of two-way screw is fixedly connected with adjusting knob, base upper end middle position is fixedly connected with support frame, the beneficial effect of the utility model is, the compound sample to be handled is sent into spherical heating tank by rotating pipe, spherical heating tank is placed on arc heating plate, by rotating adjusting knob, two-way screw can be driven to rotate, so that the spacing between power assembly can be adjusted, the rotating pipe on both sides is clamped, the power assembly set can drive spherical heating tank to rotate, so that arc heating plate can uniformly heat spherical heating tank and the compound sample in it.

Description

Technical Field

[0001] This utility model relates to the field of sample pretreatment technology for compounds, and specifically to a sample pretreatment device for compounds. Background Technology

[0002] Currently, the main instrumental methods for detecting N-nitrosamine compounds are gas chromatography-thermal analysis, gas chromatography-mass spectrometry, liquid chromatography-tandem mass spectrometry, and gas chromatography-tandem mass spectrometry. Sample pretreatment techniques primarily employ steam distillation, the QuEChERS method, solid-phase microextraction (SPME), SPE purification and concentration, and supercritical fluid extraction. Steam distillation is particularly effective because it yields a relatively clean extract, effectively reducing impurities and interference.

[0003] Existing sample pretreatment devices for compounds typically perform steam distillation heating inside a conical test tube, and only heat the bottom of the tube, resulting in uneven heating of the compound sample. To address this issue, a new sample pretreatment device for compounds is proposed. Utility Model Content

[0004] To solve the above problems, this utility model provides a sample pretreatment device for compounds, which is achieved through the following technical solution.

[0005] A sample pretreatment device for a compound includes a base, a groove at the upper end of the base, a bidirectional screw rotatably connected inside the groove, an adjustment knob fixedly connected to one end of the bidirectional screw, a support frame fixedly connected to the middle position at the upper end of the base, an arc-shaped heating plate fixedly connected to the upper end of the support frame, and a heating container provided at the upper end of the arc-shaped heating plate.

[0006] A power assembly is provided on the left and right sides of the upper end of the slide groove, and is used to drive the heating container to rotate.

[0007] As a further embodiment of this utility model, support feet are fixedly connected to the four corners of the bottom of the base.

[0008] As a further embodiment of this utility model, the heating container includes a spherical heating tank, and rotating tubes are fixedly connected to both ends of the spherical heating tank.

[0009] As a further embodiment of this utility model, the power assembly includes a mounting bracket, a bearing, and a servo motor. The bottom end of the mounting bracket is slidably connected to a sliding groove and threadedly connected to one side of a bidirectional screw. The bearing is fixedly connected to the upper end inside the mounting bracket, and the servo motor is fixedly connected to the middle position inside the mounting bracket.

[0010] As a further embodiment of this utility model, a hollow rotating shaft is fixedly connected to the inner ring of the bearing, a first connecting pipe is fixedly connected inside the hollow rotating shaft, a sealing ring is fixedly connected to the inner side of the hollow rotating shaft, a first sprocket is fixedly connected to the outer side of the hollow rotating shaft, and a second sprocket is fixedly connected to the output end of the servo motor. The first sprocket and the second sprocket are driven by a chain.

[0011] As a further embodiment of this utility model, a fixed frame is fixedly connected to the outside of the mounting bracket, a rotating connector is fixedly connected to the upper end of the fixed frame, a second connecting pipe is fixedly connected to the outside of the rotating connector, and the outside of the first connecting pipe is rotatably connected to the rotating connector.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The compound sample to be processed is fed into the spherical heating vessel through the rotating tube. The spherical heating vessel is placed on the arc-shaped heating plate. By rotating the adjustment knob, the bidirectional screw can be driven to rotate, thereby adjusting the distance between the power components and clamping the rotating tubes on both sides.

[0014] 2. The set power component can drive the spherical heating tank to rotate, so that the arc heating plate can uniformly heat the spherical heating tank and the compound sample inside. The second connecting pipe on one side is connected to the steam generator outlet pipe, so that steam can enter the spherical heating tank and perform steam distillation heating of the compound sample. The second connecting pipe on the other side is connected to the condenser inlet pipe, so that the distilled compound sample is condensed, thereby completing the pretreatment of the compound sample. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the present invention;

[0017] Figure 2 This is a schematic diagram of the arc-shaped heating plate structure described in this utility model;

[0018] Figure 3 This is a schematic diagram of the power component structure described in this utility model;

[0019] Figure 4 This is a schematic diagram of the heating container structure described in this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1. Base; 2. Support feet; 3. Support frame; 4. Arc-shaped heating plate; 5. Heating container; 6. Power assembly; 7. Slide groove; 8. Bidirectional screw; 9. Adjustment knob; 10. Mounting bracket; 11. Bearing; 12. Hollow rotating shaft; 13. First connecting pipe; 14. Sealing ring; 15. First sprocket; 16. Servo motor; 17. Second sprocket; 18. Chain; 19. Fixing frame; 20. Rotating connector; 21. Second connecting pipe; 22. Spherical heating tank; 23. Rotating pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, this utility model has the following two specific embodiments.

[0024] Example 1

[0025] A sample pretreatment device for a compound includes a base 1, a groove 7 is provided on the upper end of the base 1, a bidirectional screw 8 is rotatably connected inside the groove 7, an adjustment knob 9 is fixedly connected to one end of the bidirectional screw 8, a support frame 3 is fixedly connected to the middle position of the upper end of the base 1, an arc-shaped heating plate 4 is fixedly connected to the upper end of the support frame 3, and a heating container 5 is provided on the upper end of the arc-shaped heating plate 4.

[0026] Power assembly 6 is located on the left and right sides of the upper end of the slide 7 and is used to drive the heating container 5 to rotate.

[0027] Support feet 2 are fixedly connected to the four corners of the bottom of the base 1;

[0028] The heating container 5 includes a spherical heating tank 22, and rotating tubes 23 are fixedly connected to both ends of the spherical heating tank 22.

[0029] In this embodiment, as Figure 1-2As shown in Figure 4, the compound sample to be processed is fed into the spherical heating tank 22 through the rotating tube 23. The spherical heating tank 22 is placed on the arc-shaped heating plate 4. By rotating the adjustment knob 9, the bidirectional screw 8 can be rotated, thereby adjusting the distance between the power components 6 and clamping the rotating tubes 23 on both sides. The power components 6 can drive the spherical heating tank 22 to rotate, so that the arc-shaped heating plate 4 can uniformly heat the spherical heating tank 22 and the compound sample inside.

[0030] Example 2

[0031] The difference from Embodiment 1 is that this embodiment discloses a power assembly 6:

[0032] The power assembly 6 includes a mounting bracket 10, a bearing 11, and a servo motor 16. The bottom end of the mounting bracket 10 is slidably connected to the slide groove 7 and threadedly connected to one side of the bidirectional screw 8. The bearing 11 is fixedly connected to the upper end inside the mounting bracket 10, and the servo motor 16 is fixedly connected to the middle position inside the mounting bracket 10. A hollow rotating shaft 12 is fixedly connected to the inner ring of the bearing 11. A first connecting pipe 13 is fixedly connected inside the hollow rotating shaft 12. A sealing ring 14 is fixedly connected to the inner side of the hollow rotating shaft 12. A first sprocket 15 is fixedly connected to the outer side of the hollow rotating shaft 12. A second sprocket 17 is fixedly connected to the output end of the servo motor 16. The first sprocket 15 and the second sprocket 17 are driven by a chain 18. A fixing bracket 19 is fixedly connected to the outer side of the mounting bracket 10. A rotating connecting piece 20 is fixedly connected to the upper end of the fixing bracket 19. A second connecting pipe 21 is fixedly connected to the outer side of the rotating connecting piece 20. The outer side of the first connecting pipe 13 is rotatably connected to the rotating connecting piece 20.

[0033] In this embodiment, as Figure 3 As shown, the second connecting pipe 21 on one side is connected to the steam generator outlet pipe, and the second connecting pipe 21 on the other side is connected to the condenser inlet pipe. The rotating connector 20 can rotatably connect the first connecting pipe 13 and the second connecting pipe 21. The servo motor 16 drives the second sprocket 17 to rotate, and through the transmission of the chain 18 and the first sprocket 15, the hollow rotating shaft 12 can be driven to rotate around the bearing 11.

[0034] The working principle of this utility model is as follows:

[0035] The compound sample to be processed is fed into the spherical heating tank 22 through the rotating tube 23. The spherical heating tank 22 is placed on the arc-shaped heating plate 4. By rotating the adjustment knob 9, the bidirectional screw 8 can be rotated, which drives the mounting bracket 10 to move along the slide groove 7. This allows the spacing between the power components 6 to be adjusted, so that the sealing ring 14 on the hollow rotating shaft 12 is fitted onto the outside of the corresponding rotating tube 23, thereby clamping the rotating tubes 23 on both sides.

[0036] The servo motor 16 drives the second sprocket 17 to rotate, and through the transmission of the chain 18 and the first sprocket 15, the hollow shaft 12 can rotate around the bearing 11, which can drive the spherical heating tank 22 to rotate, so that the arc heating plate 4 can uniformly heat the spherical heating tank 22 and the compound sample inside it.

[0037] A second connecting pipe 21 on one side is connected to the steam generator outlet pipe. A rotating connector 20 allows for a rotatable connection between the first connecting pipe 13 and the second connecting pipe 21, enabling steam to enter the spherical heating tank 22 for steam distillation heating of the compound sample. The second connecting pipe 21 on the other side is connected to the condenser inlet pipe, allowing the distilled compound sample to condense, thus completing the pretreatment of the compound sample. The above-disclosed preferred embodiments of this utility model are merely illustrative. These preferred embodiments do not exhaustively describe all details and do not limit the utility model to specific implementations. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize this utility model.

Claims

1. A sample pretreatment device for a compound, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a sliding groove (7), and a double-acting screw (8) is rotatably connected inside the sliding groove (7). One end of the double-acting screw (8) is fixedly connected with an adjustment knob (9). A support frame (3) is fixedly connected to the middle position of the upper end of the base (1). An arc-shaped heating plate (4) is fixedly connected to the upper end of the support frame (3). A heating container (5) is provided on the upper end of the arc-shaped heating plate (4). The power assembly (6) is located on the left and right sides of the upper end of the slide (7) and is used to drive the heating container (5) to rotate.

2. The sample pretreatment apparatus for a compound according to claim 1, characterized in that: The base (1) is fixedly connected to four supporting feet (2) at the bottom corners.

3. The sample pretreatment apparatus for a compound according to claim 1, characterized in that: The heating container (5) includes a spherical heating tank (22), and rotating tubes (23) are fixedly connected to both ends of the spherical heating tank (22).

4. The sample pretreatment apparatus for a compound according to claim 1, characterized in that: The power assembly (6) includes a mounting bracket (10), a bearing (11), and a servo motor (16). The bottom end of the mounting bracket (10) is slidably connected to the slide groove (7) and threadedly connected to one side of the bidirectional screw (8). The bearing (11) is fixedly connected to the upper end inside the mounting bracket (10), and the servo motor (16) is fixedly connected to the middle position inside the mounting bracket (10).

5. The sample pretreatment apparatus for a compound according to claim 4, characterized in that: The inner ring of the bearing (11) is fixedly connected to a hollow shaft (12), the hollow shaft (12) is fixedly connected to a first connecting pipe (13), the inner side of the hollow shaft (12) is fixedly connected to a sealing ring (14), the outer side of the hollow shaft (12) is fixedly connected to a first sprocket (15), the output end of the servo motor (16) is fixedly connected to a second sprocket (17), and the first sprocket (15) and the second sprocket (17) are driven by a chain (18).

6. The sample pretreatment apparatus for a compound according to claim 5, characterized in that: A fixing frame (19) is fixedly connected to the outside of the mounting frame (10). A rotating connector (20) is fixedly connected to the upper end of the fixing frame (19). A second connecting pipe (21) is fixedly connected to the outside of the rotating connector (20). The outside of the first connecting pipe (13) is rotatably connected to the rotating connector (20).

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