Automatic liquid sampling device for gas chromatography
By designing a liquid automatic sampling device including a multiple sampling mechanism and a adjustment mechanism, the shortcomings of the existing devices in multiple sampling and accurate depth sampling are solved, and cost reduction and sampling accuracy are improved.
Patent Information
- Application Number
- CN202420568645.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Existing liquid automatic sampling devices require the preparation of multiple devices during multiple sampling, which increases cost and workload and makes it difficult to perform accurate sampling for different depths.
An automatic liquid sampling device is designed, including a sampling mechanism for multiple sampling and an adjustment mechanism for sampling at different depths. Multiple and depth accurate sampling is achieved through the sample storage chamber, sampling tube, adjustment rod and automatic extraction assembly in the sampling cylinder.
It realizes multiple sampling without adding a sampling device, reduces cost consumption, and improves the sampling accuracy of samples of different depths through the adjustment mechanism.
Smart Images
Figure CN222579703U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid sampling, and more specifically, to an automatic liquid sampling device for gas chromatography. Background Art
[0002] In the process of detecting liquid by gas chromatography, it is necessary to perform sampling operation on the liquid to be detected by using an automatic liquid sampling device for gas chromatography.
[0003] The existing automatic liquid sampling devices can usually only perform single liquid sampling during the sampling process. When multiple samplings are required, multiple sampling devices are often required, which not only increases the cost consumption and the workload, but also the existing automatic liquid sampling devices are not convenient for performing accurate sampling operations for different depths of the liquid to be sampled during the sampling process. Utility Model Content
[0004] In order to overcome the above defects of the prior art, an embodiment of the utility model provides a liquid automatic sampling device for gas chromatography to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including; a sampling cylinder, a sampling mechanism for multiple sampling is provided at the bottom of the sampling cylinder, an adjustment mechanism for sampling samples of different depths is provided at the bottom of one side of the sampling cylinder, and an automatic extraction component for automatic sampling of samples is provided at the upper end of the other side of the sampling cylinder.
[0006] In a preferred embodiment, the sampling mechanism includes four sample storage chambers opened at the bottom of the sampling cylinder, the bottom of the sampling cylinder is fixedly connected with a cross-shaped baffle, the top of the cross-shaped baffle is fixedly connected with a fixed disk, the side wall of the fixed disk is fixedly connected to the inner wall of the sampling cylinder, the surface of the fixed disk is provided with air suction holes at the relative positions of the four sample storage chambers, the bottom of the sampling cylinder is connected with sampling tubes at the relative positions of the four sample storage chambers, a driving disk is rotatably connected to the surface of the fixed disk in the sampling cylinder, and air guide holes are penetrated through the surface of the driving disk, a piston is slidably connected above the driving disk in the sampling cylinder, a rotating rod is vertically penetrated and slidably connected to the piston, the bottom end of the rotating rod is fixedly connected to the top surface of the driving disk, the top surface of the sampling cylinder is rotatably connected with a rotating disk, and the top end of the rotating rod penetrates the top surface of the sampling cylinder and is fixedly connected to the bottom surface of the rotating disk.
[0007] In a preferred embodiment, the air guide holes are located at positions opposite to the four air extraction holes, and the calibers of the air guide holes are the same as those of the four air extraction holes.
[0008] In a preferred embodiment, the sampling tube is made of transparent material.
[0009] In a preferred embodiment, the adjustment mechanism includes a fixed block fixedly connected to the bottom of one side of the sampling barrel, an L-shaped adjustment rod vertically passing through the fixed block and slidably connected thereto, a scale is vertically opened on one side of the L-shaped adjustment rod, a No. 1 screw is vertically passed through the L-shaped adjustment rod and is threadedly connected thereto, the bottom end of the No. 1 screw is rotatably connected to the top surface of the fixed block, a lifting plate is provided under the sampling barrel, the bottom ends of the four sampling tubes all pass through the lifting plate and are fixedly connected to the lifting plate, and the bottom end of the L-shaped adjustment rod is fixedly connected to one end of the top surface of the lifting plate.
[0010] In a preferred embodiment, the automatic extraction component includes a drive box fixedly connected to one side of the sampling cylinder, a drive block is slidably connected in the drive box, a U-shaped drive rod is provided above the drive box, one end of the U-shaped drive rod passes through the top surface of the sampling cylinder and is fixedly connected to the top surface of the piston, the other end of the U-shaped drive rod passes through the top surface of the drive box and is fixedly connected to one side of the drive block, a No. 2 screw is vertically threadedly connected to the drive block, a motor is fixedly connected to the top of the drive box, the output end of the motor is fixedly connected to one end of the No. 2 screw, and the other end of the No. 2 screw is rotatably connected to the bottom surface of the drive box, a No. 1 switch is installed on one side of the drive box, and a No. 2 switch is fixedly connected to one side of the drive box below the No. 1 switch, and the No. 1 switch and the No. 2 switch are both electrically connected to the motor.
[0011] Technical effects and advantages of the utility model:
[0012] 1. The sampling mechanism is set up to facilitate multiple sampling of samples, without the need to add sampling devices, which greatly reduces the cost consumption;
[0013] 2. By setting up the adjustment mechanism, it is convenient to sample samples at different depths, improve the accuracy of sampling, and increase the accuracy of subsequent sample testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a front cutaway structural schematic diagram of the utility model.
[0015] Figure 2 It is a schematic diagram of the L-shaped adjusting rod structure of the utility model.
[0016] Figure 3 It is a schematic diagram of the rotating disk connection structure of the utility model.
[0017] The accompanying drawings are marked as follows: 1. sampling cylinder; 2. sampling mechanism; 3. adjusting mechanism; 4. automatic extraction component; 5. fixed disk; 6. exhaust hole; 7. cross-shaped baffle; 8. sampling tube; 9. lifting plate; 10. fixed block; 11. No. 1 screw; 12. L-shaped adjusting rod; 13. scale; 14. driving disk; 15. air guide hole; 16. rotating rod; 17. rotating disk; 18. piston; 19. U-shaped driving rod; 20. driving box; 21. driving block; 22. No. 2 screw; 23. motor; 24. No. 1 switch; 25. No. 2 switch; 26. sample storage bin. DETAILED DESCRIPTION
[0018] 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.
[0019] As attached Figure 1-3 The liquid automatic sampling device for gas chromatography shown in the figure comprises: a sampling tube 1, a sampling mechanism 2 for multiple sampling is provided at the bottom of the sampling tube 1, an adjustment mechanism 3 for sampling samples at different depths is provided at the bottom of one side of the sampling tube 1, and an automatic extraction component 4 for automatic sampling of samples is provided at the upper end of the other side of the sampling tube 1.
[0020] The sampling mechanism 2 includes four sample storage bins 26 opened at the bottom of the sampling tube 1, a cross-shaped baffle 7 is fixedly connected to the bottom of the sampling tube 1, a fixed disk 5 is fixedly connected to the top of the cross-shaped baffle 7, a side wall of the fixed disk 5 is fixedly connected to the inner wall of the sampling tube 1, and the surface of the fixed disk 5 is provided with air extraction holes 6 at relative positions of the four sample storage bins 26. The bottom of the sampling tube 1 is connected to the four sample storage bins 26 at relative positions and is connected to sampling tubes 8. The driving disk 14 is rotatably connected to the surface of the fixed disk 5, and the air guide hole 15 is penetrated and opened on the surface of the driving disk 14. The piston 18 is slidably connected to the sampling tube 1 above the driving disk 14. The rotating rod 16 vertically penetrates and is slidably connected to the piston 18. The bottom end of the rotating rod 16 is fixedly connected to the top surface of the driving disk 14, and the rotating disk 17 is rotatably connected to the top surface of the sampling tube 1. The top end of the rotating rod 16 penetrates the top surface of the sampling tube 1 and is fixedly connected to the bottom surface of the rotating disk 17.
[0021] The air guide holes 15 are located at positions opposite to the four air extraction holes 6 , and the calibers of the air guide holes 15 are the same as those of the four air extraction holes 6 .
[0022] The sampling tube 1 is made of transparent material.
[0023] The specific implementation method is as follows: by setting the sampling mechanism 2, it is convenient to perform multiple sampling of samples without adding a sampling device, which greatly reduces the cost consumption.
[0024] As attached Figure 1 With attached Figure 2 The shown liquid automatic sampling device for gas chromatography, the adjustment mechanism 3 includes a fixed block 10 fixedly connected to the bottom of one side of the sampling tube 1, an L-shaped adjustment rod 12 vertically penetrates and is slidably connected to the fixed block 10, a scale 13 is vertically opened on one side of the L-shaped adjustment rod 12, a No. 1 screw 11 vertically penetrates and is threadedly connected to the L-shaped adjustment rod 12, the bottom end of the No. 1 screw 11 is rotatably connected to the top surface of the fixed block 10, a lifting plate 9 is arranged below the sampling tube 1, the bottom ends of the four sampling tubes 8 all penetrate the lifting plate 9 and are fixedly connected to the lifting plate 9, and the bottom end of the L-shaped adjustment rod 12 is fixedly connected to one end of the top surface of the lifting plate 9.
[0025] The automatic extraction component 4 includes a drive box 20 fixedly connected to one side of the sampling tube 1, a drive block 21 slidably connected to the drive box 20, a U-shaped drive rod 19 is provided above the drive box 20, one end of the U-shaped drive rod 19 passes through the top surface of the sampling tube 1 and is fixedly connected to the top surface of the piston 18, the other end of the U-shaped drive rod 19 passes through the top surface of the drive box 20 and is fixedly connected to one side of the drive block 21, a No. 2 screw 22 vertically passes through and is threadedly connected to the drive block 21, a motor 23 is fixedly connected to the top of the drive box 20, an output end of the motor 23 is fixedly connected to one end of the No. 2 screw 22, and the other end of the No. 2 screw 22 is rotatably connected to the bottom surface of the drive box 20, a No. 1 switch 24 is installed on one side of the drive box 20, a No. 2 switch 25 is installed on one side of the drive box 20 and is located below the No. 1 switch 24, the No. 1 switch 24 and the No. 2 switch 25 are both electrically connected to the motor 23, and the No. 1 switch 24 and the No. 2 switch 25 respectively control the motor 23 to rotate forward and reverse.
[0026] The specific implementation method is as follows: by setting the adjustment mechanism 3, it is convenient to sample samples at different depths, improve the accuracy of sampling, and increase the accuracy of subsequent sample detection.
[0027] The working principle of the utility model is as follows: when working, first insert one end of a plurality of sampling tubes 8 into the liquid sample to be sampled, and at the same time rotate the rotating disk 17, the rotating disk 17 drives the driving disk 14 to rotate through the rotating rod 16, so that the air guide hole 15 is aligned with one of the air extraction holes 6, and then press the No. 1 switch 24 to start the motor 23, the motor 23 drives the No. 2 screw 22 to rotate, so that the driving block 21 drives the piston 18 to move upward through the U-shaped driving rod 19, and the sample can be automatically drawn into one of the sample storage bins 26 at the bottom of the sampling tube 1. When it is necessary to sample samples of different depths, first rotate the No. 1 screw 11, so that the L-shaped adjusting rod 12 drives the lifting plate 9 to lift and lower, and cooperate with the scale 13 to move the bottom of the plurality of sampling tubes 8 to the specified depth, and then rotate the rotating disk 17, and the rotating disk 17 drives the driving disk 14 to move through the rotating rod 16. The first switch 24 is then pressed to start the motor 23, and the motor 23 drives the second screw 22 to rotate, so that the driving block 21 drives the piston 18 to move upward through the U-shaped driving rod 19, and the sample of the corresponding depth can be automatically drawn into another sample storage bin 26 at the bottom of the sampling tube 1. Then continue the above steps to sample samples of different depths. When the extracted sample needs to be taken out, first rotate the rotating disk 17 to align the air guide hole 15 with the designated air extraction hole 6, and then press the second switch 25 to start the motor 23 for reverse rotation. The motor 23 drives the second screw 22 to rotate, so that the driving block 21 drives the piston 18 to move downward through the U-shaped driving rod 19, and the sample in the corresponding sample storage bin 26 can be squeezed out through the sampling tube 8, thereby improving the convenience of taking out the sample.
[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0029] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A liquid automatic sampling device for gas chromatography, comprising: a sampling cylinder (1), characterized in that: The bottom of the sampling tube (1) is provided with a sampling mechanism (2) for performing multiple samplings, the bottom of one side of the sampling tube (1) is provided with an adjustment mechanism (3) for sampling samples at different depths, and the upper end of the other side of the sampling tube (1) is provided with an automatic extraction component (4) for automatically sampling samples.
2. The liquid automatic sampling device for gas chromatography according to claim 1, characterized in that: The sampling mechanism (2) comprises four sample storage chambers (26) opened at the bottom of the sampling tube (1); the bottom of the sampling tube (1) is fixedly connected to a cross-shaped baffle (7); the top of the cross-shaped baffle (7) is fixedly connected to a fixed plate (5); the side wall of the fixed plate (5) is fixedly connected to the inner side wall of the sampling tube (1); the surface of the fixed plate (5) is provided with air extraction holes (6) at positions relative to the four sample storage chambers (26); the bottom of the sampling tube (1) is connected to sampling tubes (8) at positions relative to the four sample storage chambers (26); the inside of the sampling tube (1) is provided with a plurality of air pumps (6). A driving disk (14) is rotatably connected to the surface of the fixed disk (5), and an air guide hole (15) is formed through the surface of the driving disk (14). A piston (18) is slidably connected to the sampling tube (1) above the driving disk (14). A rotating rod (16) is vertically penetrated and slidably connected to the piston (18), and the bottom end of the rotating rod (16) is fixedly connected to the top surface of the driving disk (14). A rotating disk (17) is rotatably connected to the top surface of the sampling tube (1), and the top end of the rotating rod (16) penetrates the top surface of the sampling tube (1) and is fixedly connected to the bottom surface of the rotating disk (17).
3. The liquid automatic sampling device for gas chromatography according to claim 2, characterized in that: The air guide hole (15) is located at a position relative to the four air extraction holes (6), and the caliber of the air guide hole (15) is the same as that of the four air extraction holes (6).
4. The liquid automatic sampling device for gas chromatography according to claim 1, characterized in that: The sampling tube (1) is made of transparent material.
5. The liquid automatic sampling device for gas chromatography according to claim 2, characterized in that: The adjustment mechanism (3) comprises a fixed block (10) fixedly connected to the bottom of one side of the sampling tube (1), an L-shaped adjustment rod (12) vertically penetrates through the fixed block (10) and is slidably connected, a scale (13) is vertically opened on one side of the L-shaped adjustment rod (12), a No. 1 screw rod (11) is vertically penetrated through the L-shaped adjustment rod (12) and is threadedly connected, the bottom end of the No. 1 screw rod (11) is rotatably connected to the top surface of the fixed block (10), a lifting plate (9) is provided below the sampling tube (1), the bottom ends of the four sampling tubes (8) all penetrate through the lifting plate (9) and are fixedly connected to the lifting plate (9), and the bottom end of the L-shaped adjustment rod (12) is fixedly connected to one end of the top surface of the lifting plate (9).
6. The liquid automatic sampling device for gas chromatography according to claim 2, characterized in that: The automatic extraction component (4) comprises a driving box (20) fixedly connected to one side of the sampling tube (1), a driving block (21) being slidably connected inside the driving box (20), a U-shaped driving rod (19) being arranged above the driving box (20), one end of the U-shaped driving rod (19) passing through the top surface of the sampling tube (1) and being fixedly connected to the top surface of the piston (18), the other end of the U-shaped driving rod (19) passing through the top surface of the driving box (20) and being fixedly connected to one side of the driving block (21), and a second threaded rod (21) being vertically passed through the driving block (21) and being connected thereto. A screw rod (22), a motor (23) is fixedly connected to the top of the driving box (20), an output end of the motor (23) is fixedly connected to one end of the No. 2 screw rod (22), the other end of the No. 2 screw rod (22) is rotatably connected to the bottom surface of the driving box (20), a No. 1 switch (24) is installed on one side of the driving box (20), a No. 2 switch (25) is fixedly connected to one side of the driving box (20) below the No. 1 switch (24), and both the No. 1 switch (24) and the No. 2 switch (25) are electrically connected to the motor (23).