Automatic sampling device

Abstract

The utility model provides an automatic sampling device which comprises a shell, a linear sliding table is fixedly mounted on the inner side of the shell, an electric push rod is mounted on the surface of the linear sliding table, an output rod is mounted at the output end of the electric push rod, an air pump is fixedly mounted at the bottom end of the output rod, and a sampling needle is mounted at the input end of the air pump. A conveying pipe is installed at the output end of the air pump, a connecting plate is fixedly installed on the surface of an output rod, and a side block is fixedly installed on the side face of the shell. In the process that the output rod moves downwards, the linkage mechanism drives the connecting plate, the top plate, the sliding frame, the check block, the tension spring, the rack, the gear, the rotating rod and the knocking rod to move, the knocking rod can knock the mounting box, so that the mounting box slightly vibrates, water drops at the sealing position of the gas collecting bag can quickly drop to the bottom of the bag through the vibration, and the sealing effect of the gas collecting bag is improved. The pollution to the sampling needle is reduced, and the sampling accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic sampling, in particular to an automatic sampling device for exhaled gas. Background Art

[0002] With the continuous development of technology, automatic breath samplers have become the standard configuration of analytical testing instruments because of their features of continuous automatic sampling, unattended operation, and improved work efficiency. Automatic sampling devices for exhaled gas generally include a gas collection bag, a special sampling head, a shifting mechanism, etc. The shifting mechanism is used to move the sampling head to the top of the sample tube and drive the sampling head up and down so that the sampling head can be inserted into the seal of the gas collection bag, and the software of the detector controls the automatic sampling and testing of the sample. However, the opening of the gas collection bag contains the saliva of the sampled person and a large amount of water droplets condensed from water vapor, which affects the detector's analysis of the exhaled gas and is prone to contamination of the detector. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: an automatic sampling device, comprising a shell, a linear slide is fixedly installed on the inner side of the shell, an electric push rod is installed on the surface of the linear slide, an output end of the electric push rod is installed with an output rod, an air pump is fixedly installed on the bottom end of the output rod, a sampling needle is installed on the input end of the air pump, a delivery pipe is installed on the output end of the air pump, a connecting plate is fixedly installed on the surface of the output rod, a side block is fixedly installed on the side of the shell, a sliding frame is penetrated on the top surface of the side block, a top plate is fixedly installed on the top of the sliding frame, a rack is fixedly installed on the bottom surface of the top plate, a stop block is fixedly installed on the bottom end of the sliding frame, a tension spring is sleeved on the surface of the sliding frame, a rotating rod is rotatably connected to the inner side of the shell, a gear is fixedly installed on one end of the rotating rod, and a knocking rod is fixedly installed on the surface of the rotating rod.

[0005] Preferably, the knocking rods are made of natural rubber, and the knocking rods are arranged at equal distances on the surface of the rotating rod.

[0006] Preferably, one end of the tension spring is fixedly connected to the stopper, and the other end of the tension spring is fixedly connected to the side block. Here, the tension spring can be stably installed.

[0007] Preferably, the sliding frame is slidably connected to the side block, and the gear is meshed with the rack.

[0008] Preferably, the shell is a "U"-shaped structure, and the shell is made of austenitic stainless steel, thereby increasing the service life of the shell.

[0009] Preferably, a placement mechanism is provided on the inner side of the shell, the placement mechanism comprises a slot, the slot is provided on the inner side of the shell, an insert block is slidably connected to the inner wall of the slot, a mounting box is fixedly installed on the top surface of the insert block, an air bag groove is provided on the top surface of the mounting box, a rubber strip is fixedly installed on the inner side of the slot, and rubber convex particles are fixedly installed on the surface of the rubber strip. Here, practicality can be improved.

[0010] Preferably, the rubber convex particles are arranged at equal distances on the surface of the rubber strip, and the rubber strip and the rubber convex particles are made of natural rubber.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, the sampling needle is driven to align with the air collecting bag by a linear slide, which improves the accuracy and efficiency of alignment, reduces the error and time of manual adjustment, and at the same time, the electric push rod drives the output rod to move downward, driving the sampling needle to insert into the air collecting bag, thereby realizing automatic sampling, reducing manual operation, and improving work efficiency. At the same time, in the process of the output rod moving downward, the connecting plate, the top plate, the sliding frame, the block, the tension spring, the rack, the gear, the rotating rod and the knocking rod are driven to move through the linkage mechanism. The knocking rod can knock the installation box, thereby causing the installation box to vibrate slightly. This vibration can cause the water droplets in the air collecting bag to drip quickly and deposit to the bottom of the bag, reducing its contamination to the sampling needle, and reducing the difficulty of subsequent drying, thereby improving the accuracy of sampling. At the same time, when the sampling needle moves upward to reset, the tension of the tension spring resets the sliding frame and the block, thereby realizing the automatic reset function, reducing the trouble of manual reset, and improving the automation level of the equipment.

[0013] 2. The utility model can quickly install the air collecting bag by sliding the plug block on the bottom of the installation box into the slot, thereby realizing efficient replacement and installation of the air collecting bag, making the installation box quick to disassemble and assemble, reducing the time for sample replacement and equipment maintenance, and improving work efficiency. The rubber strips and rubber convex particles are provided to provide additional friction to ensure that the installation box remains stable during use, preventing the air collecting bag from shaking or shifting during operation, thereby improving the accuracy and safety of sampling. The installation box can accommodate multiple air collecting bags at the same time and can process multiple samples at one time, thereby improving the batch and efficiency of sample processing. It is suitable for laboratories or production environments that need to frequently replace air collecting bags. The installation and removal of the air collecting bags can be completed through a simple sliding action, which reduces the difficulty of operation, makes the equipment more convenient and quick to use, and reduces the technical requirements for operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of an automatic sample injection device is provided for the utility model;

[0015] Figure 2The utility model proposes an automatic sampling device Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 A bottom view of an automatic sample injection device is provided for the utility model;

[0017] Figure 4 The utility model provides an exploded diagram of an automatic sampling device.

[0018] Legend:

[0019] 1. Housing; 2. Linear slide; 3. Electric push rod; 4. Output rod; 5. Air pump; 6. Sampling needle; 7. Delivery pipe; 8. Connecting plate; 9. Side block; 10. Sliding frame; 11. Top plate; 12. Rack; 13. Stop block; 14. Tension spring; 15. Rotating rod; 16. Gear; 17. Knocking rod; 18. Slot; 19. Insert block; 20. Installation box; 21. Air bag slot; 22. Rubber strip; 23. Rubber convex particles. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example 1

[0022] See also Figure 1-4The utility model provides a technical solution: an automatic sampling device, including a shell 1, the shell 1 is a "U"-shaped structure, the shell 1 is made of austenitic stainless steel, austenitic stainless steel has excellent corrosion resistance and high strength, ensuring the durability and stability of the device during use. A linear slide 2 is fixedly installed on the inner side of the shell 1, and the linear slide 2 can be fixed by bolt connection or welding to ensure its stability and accuracy during use. An electric push rod 3 is installed on the surface of the linear slide 2, and the electric push rod 3 is fixed by threaded connection or flange connection, which is convenient for disassembly and maintenance. An output rod 4 is installed at the output end of the electric push rod 3, and an air pump 5 is fixed at the bottom end of the output rod 4. A sampling needle 6 is installed at the input end of the air pump 5, and the sampling needle 6 is fixed by threaded connection, which is convenient for replacement and cleaning. A delivery pipe 7 is installed at the output end of the air pump 5, and the delivery pipe 7 is fixed by snap connection or threaded connection to ensure that the delivery pipe 7 does not leak during use. The surface of the output rod 4 is fixedly mounted with a connecting plate 8, which can be fixed by bolts or welding to ensure that it does not loosen during movement. The side of the housing 1 is fixedly mounted with a side block 9, which is fixed by bolts or welding to ensure its stability. The top surface of the side block 9 is penetrated by a sliding frame 10, which is slidably connected to the side block 9, and the sliding frame 10 can be guided by a guide rail or a bearing to ensure the smoothness and accuracy of the movement.

[0023] See also Figure 1-4 , a top plate 11 is fixedly installed on the top of the sliding frame 10, and the top plate 11 can be fixed by bolt connection or welding. A rack 12 is fixedly installed on the bottom surface of the top plate 11, and the rack 12 is fixed by bolt connection to ensure that the rack 12 will not loosen during movement. A stopper 13 is fixedly installed on the bottom end of the sliding frame 10, and the stopper 13 is fixed by bolt connection or welding. A tension spring 14 is sleeved on the surface of the sliding frame 10, one end of the tension spring 14 is fixedly connected to the stopper 13, and the other end is fixedly connected to the side block 9. The tension spring 14 can be installed by screw fixation or snap connection to ensure that it does not fall off during the stretching process. A rotating rod 15 is rotatably connected to the inner side of the housing 1, and the rotating rod 15 is connected by a bearing or a rotating joint to ensure its stability and flexibility during rotation. A gear 16 is fixedly installed on one end of the rotating rod 15, and the gear 16 is meshed with the rack 12. The gear 16 is fixed by a key connection or a threaded connection to ensure that it does not slip during movement. The surface of the rotating rod 15 is fixedly provided with a striking rod 17, which is made of natural rubber, and the natural rubber has good elasticity and wear resistance, so as to ensure that the striking rod 17 is not easily damaged during use. The striking rods 17 are arranged at equal distances on the surface of the rotating rod 15, so as to ensure uniformity when striking. Example 2

[0024] See also Figure 3-4The inner side of the housing 1 is provided with a placement mechanism, which includes a slot 18, which is opened on the inner side of the housing 1, and an insert block 19 is slidably connected to the inner wall of the slot 18, and the insert block 19 can slide in a guide rail or bearing manner to ensure the smoothness and accuracy of the sliding. The top surface of the insert block 19 is fixedly installed with an installation box 20, which is fixed by bolt connection or snap connection to ensure the stability of the installation box 20 during use.

[0025] Among them, the air collecting bag is a standing bag, and the top surface of the installation box 20 is provided with an air collecting bag groove 21 adapted to the contour of the bottom surface of the air collecting bag. The air collecting bag groove 21 can be made by mold forming or mechanical processing to ensure the accuracy and consistency of its size. A rubber strip 22 is fixedly installed on the inner side of the slot 18, and the rubber strip 22 is fixed by an adhesive or a snap to ensure its stability during use. Rubber convex particles 23 are fixedly installed on the surface of the rubber strip 22, and the rubber convex particles 23 are arranged at equal distances on the surface of the rubber strip 22 to ensure that it provides uniform friction during use. The material of the rubber strip 22 and the rubber convex particles 23 is natural rubber, which has good elasticity and wear resistance, ensuring its durability and stability in long-term use.

[0026] Working principle: it is only necessary to put the gas collecting bag into the gas collecting bag slot 21, and then when sampling, it is only necessary to drive the sampling needle 6 to align with the sealing part of the gas collecting bag through the linear slide 2, and then drive the output rod 4 to move downward through the electric push rod 3, and then drive the sampling needle 6 to move downward until the sampling needle 6 is inserted into the gas collecting bag, and then the sample can be pumped out for sampling through the air pump 5. At the same time, during the downward movement of the output rod 4, the connecting plate 8 can be synchronously driven to move downward. When the connecting plate 8 moves downward, it can squeeze the top plate 11 downward, and the top plate 11 can then squeeze the sliding frame 10 downward to move, and the sliding frame 10 moves with The stopper 13 is then driven to pull the tension spring 14, and during the downward movement of the top plate 11, the rack 12 can be synchronously driven to move downward, and the rack 12 can then drive the gear 16 meshing therewith to rotate, and the gear 16 can drive the rotating rod 15 to rotate when it rotates, and the rotating rod 15 can then drive the knocking rod 17 to rotate, and the knocking rod 17 can knock on the installation box 20 during its rotation, so that the installation box 20 vibrates slightly, and this vibration can make the water droplets in the air collecting bag drip quickly and settle to the bottom of the bag, reducing its contamination to the sampling needle, and reducing the difficulty of subsequent drying, thereby improving the accuracy of sampling.

[0027] When the sampling needle 6 moves upward to reset, due to the tension of the tension spring 14, the tension spring 14 can pull the stopper 13 upward, and the stopper 13 can then drive the sliding frame 10 to move, thereby completing the reset. In the utility model, the sampling needle 6 is driven to align with the gas collecting bag by the linear slide 2, which improves the alignment accuracy and efficiency, reduces the error and time of manual adjustment, and at the same time, the electric push rod 3 drives the output rod 4 to move downward, driving the sampling needle 6 to insert into the gas collecting bag, realizing automatic sampling, reducing manual operation, and improving work efficiency. At the same time, in the process of the output rod 4 moving downward, the connecting plate 8, the top plate 11, the sliding frame 10, the stopper 13, the tension spring 14, the rack 12, the gear 16, the rotating rod 15 and the knocking rod 17 are driven to move through the linkage mechanism. The knocking rod 17 can knock on the installation box 20, thereby causing the installation box 20 to vibrate slightly. This vibration can cause the water droplets in the gas collecting bag to drip quickly and deposit to the bottom of the bag, reducing its contamination to the sampling needle, and reducing the difficulty of subsequent drying, thereby improving the accuracy of sampling. At the same time, when the sampling needle 6 moves upward to reset, the tension of the tension spring 14 resets the sliding frame 10 and the stopper 13, realizing the automatic reset function, reducing the trouble of manual reset and improving the automation degree of the equipment.

[0028] The air collecting bag can be stored through the installation box 20 and the air collecting bag groove 21, and then the plug 19 on the bottom of the installation box 20 is aligned with the slot 18 and slid into it. At this time, the air collecting bag can be installed and sampling can be carried out afterwards. At the same time, the rubber strips 22 and rubber protrusions 23 can also provide friction, thereby ensuring the stability of the installation box 20. In this way, multiple air collecting bags can be entered at one time, and the installation box 20 can be quickly disassembled and assembled.

[0029] The utility model can quickly install the air collecting bag by aligning the plug block 19 on the bottom surface of the installation box 20 with the slot 18 and sliding it into the slot, thereby realizing efficient replacement and installation of the air collecting bag, and making the installation box 20 quick to disassemble and assemble, reducing the time for sample replacement and equipment maintenance, and improving work efficiency. In addition, by providing the rubber strip 22 and the rubber convex particle 23, additional friction is provided to ensure that the installation box 20 remains stable during use, and prevents the air collecting bag from shaking or shifting during operation, thereby improving the accuracy and safety of sampling. In addition, the installation box 20 can accommodate multiple air collecting bags at the same time, and can process multiple samples at one time, thereby improving the batch and efficiency of sample processing. It is suitable for laboratories or production environments that need to frequently replace air collecting bags, and the installation and removal of the air collecting bags can be completed through a simple sliding action, which reduces the difficulty of operation, makes the equipment more convenient and quick to use, and reduces the technical requirements for operators.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic sampling device, comprising a housing (1), characterized in that: A linear slide (2) is fixedly mounted on the inner side of the housing (1); an electric push rod (3) is mounted on the surface of the linear slide (2); an output rod (4) is mounted on the output end of the electric push rod (3); an air pump (5) is fixedly mounted on the bottom end of the output rod (4); a sampling needle (6) is mounted on the input end of the air pump (5); a delivery pipe (7) is mounted on the output end of the air pump (5); a connecting plate (8) is fixedly mounted on the surface of the output rod (4); a side block (9) is fixedly mounted on the side of the housing (1); and the side block A sliding frame (10) is provided through the top surface of (9), a top plate (11) is fixedly installed on the top of the sliding frame (10), a rack (12) is fixedly installed on the bottom surface of the top plate (11), a stopper (13) is fixedly installed on the bottom end of the sliding frame (10), a tension spring (14) is sleeved on the surface of the sliding frame (10), a rotating rod (15) is rotatably connected to the inner side of the housing (1), a gear (16) is fixedly installed on one end of the rotating rod (15), and a knocking rod (17) is fixedly installed on the surface of the rotating rod (15).

2. The automatic sample introduction device according to claim 1, characterized in that: The material of the knocking rods (17) is natural rubber, and the knocking rods (17) are arranged at equal distances on the surface of the rotating rod (15).

3. The automatic sample introduction device according to claim 1, characterized in that: One end of the tension spring (14) is fixedly connected to the stopper (13), and the other end of the tension spring (14) is fixedly connected to the side block (9).

4. The automatic sample introduction device according to claim 1, characterized in that: The sliding frame (10) is slidably connected to the side block (9), and the gear (16) is meshed with the rack (12).

5. The automatic sample introduction device according to claim 1, characterized in that: The outer shell (1) is a "U"-shaped structure, and the material of the outer shell (1) is austenitic stainless steel.

6. The automatic sample introduction device according to claim 1, characterized in that: A placement mechanism is provided on the inner side of the shell (1), the placement mechanism comprising a slot (18), the slot (18) being opened on the inner side of the shell (1), an insert block (19) being slidably connected to the inner wall of the slot (18), a mounting box (20) being fixedly mounted on the top surface of the insert block (19), an air collecting bag groove (21) being opened on the top surface of the mounting box (20), a rubber strip (22) being fixedly mounted on the inner side of the slot (18), and rubber convex particles (23) being fixedly mounted on the surface of the rubber strip (22).

7. The automatic sample introduction device according to claim 6, characterized in that: The rubber convex particles (23) are arranged at equal distances on the surface of the rubber strip (22); the rubber strip (22) and the rubber convex particles (23) are made of natural rubber.

Images