Miniaturized sample injector
By designing miniaturized sample syringes and using structures such as clamping plates, racks, gear columns and ring internal gears, the problem that existing syringes cannot quickly replace sample storage tubes, achieving the effect of rapid disassembly and accurate injection.
Patent Information
- Application Number
- CN202421812022.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During use, existing syringes cannot quickly replace the sample storing tube, resulting in the inability to quickly replace different samples injected.
A miniaturized sample syringe was designed, using structures such as clamping plates, racks, gear columns and ring internal gears. By manually pulling the sliding rod and the starting motor, the functions of quickly installing and disassembling the sample tube and precise injection are achieved.
It realizes rapid installation and removal of the sample storage tube, and injects different samples again without cleaning, improving the accuracy and efficiency of injection.
Smart Images
Figure CN222829675U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical detection devices, in particular to a miniaturized sample injector. Background Art
[0002] Miniaturized samples usually refer to samples that have been processed by appropriate techniques to transform them into a tiny form suitable for analysis. This may include sample pretreatment steps such as extraction, concentration, or direct use of micro-samples. The use of miniaturized samples can help improve the sensitivity and resolution of analysis and reduce the amount of sample required for analysis, thus having important application value in laboratory analysis and detection.
[0003] Miniaturized samples are usually injected with syringes in gas chromatography because they can accurately control and deliver tiny volumes of samples to the chromatographic column, ensuring the accuracy and reproducibility of the analysis. The syringe can quickly and non-destructively introduce samples while avoiding contamination and loss of samples, and is one of the key tools for achieving efficient and accurate analysis, so a miniaturized sample syringe is needed.
[0004] Most syringes usually use the same pipe design for the sample storage tube and the sample push tube during use. During use, they need to be cleaned multiple times before injecting different chemical samples, resulting in the problem that the sample storage tube cannot be quickly replaced during use. Utility Model Content
[0005] In order to make up for the above shortcomings, the utility model provides a miniaturized sample syringe, aiming to improve the problem that the sample storage tube cannot be quickly replaced.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A miniaturized sample syringe comprises a clamping plate, the outer wall of the clamping plate is fixedly connected with a first rack, the outer wall of the first rack is meshedly connected with a gear column, the inner wall of the gear column is rotatably connected with a fixed shaft, the outer wall of the fixed shaft is fixedly connected with a shell, the outer wall of the shell is fixedly connected with a pull rod, the outer wall of the pull rod is fixedly connected with a tension spring, the outer wall of the tension spring is fixedly connected with a sliding rod, the outer wall of the sliding rod is fixedly connected with an annular internal gear, the outer wall of the first rack is slidably connected to the inner wall of the shell, the outer wall of the fixed shaft is meshedly connected to the inner wall of the annular internal gear, the outer wall of the annular internal gear is slidably connected to the inner wall of the shell, the outer wall of the sliding rod is slidably connected to the inner wall of the shell, the outer wall of the clamping plate is slidably connected to the outer wall of the shell, the outer wall of the clamping plate is slidably connected with a sample storage tube, the outer wall of the shell is provided with an injection assembly, and the injection assembly is used to push the chemical sample out for testing.
[0008] Preferably, the injection assembly includes a sample pushing tube, the outer wall of which is fixedly connected to the outer wall of the shell, a fixing ring is fixed to the outer wall of the sample pushing tube, an injection push rod is slidably connected to the inside of the sample pushing tube, and the outer wall of the injection push rod is slidably connected to the inner wall of the fixing ring.
[0009] Preferably, a fixing column is fixedly connected to the outer wall of the fixing ring, and a second rack is fixedly connected to the outer wall of the fixing column.
[0010] Preferably, the outer wall of the second rack is meshingly connected with the first gear, and the inner wall of the first gear is fixedly connected with the first rotating rod.
[0011] Preferably, the outer wall of the injection push rod is fixedly connected to a push plate, and the outer wall of the first rotating rod is rotatably connected to the inner wall of the push plate.
[0012] Preferably, both ends of the first rotating rod are fixedly connected with a second bevel gear, and the outer wall of the second bevel gear is meshingly connected with a third bevel gear.
[0013] Preferably, the inner wall of the third bevel gear is fixedly connected to a second rotating rod, and the outer wall of the second rotating rod is rotatably connected to the inner wall of the push plate.
[0014] Preferably, a worm wheel is fixedly connected to the middle outer wall of the second rotating rod, a motor is fixedly connected to the outer wall of the push plate, a worm is fixedly connected to the output end of the motor, and the outer wall of the worm wheel is meshingly connected to the outer wall of the worm.
[0015] The utility model has the following beneficial effects:
[0016] 1. In the utility model, the sliding rod is manually pulled to drive the annular inner gear and the gear column to rotate. The rotation of the gear column will drive the first rack and the clamping plate to translate outward. The sliding rod is loosened, so that the tension spring pulls the sliding rod back to drive the annular inner gear to rotate in the opposite direction, so as to achieve the effect of quickly installing and disassembling the sample tube, and injecting different samples again without cleaning.
[0017] 2. In the utility model, the worm, the worm wheel, the second rotating rod, the third bevel gear and the second bevel gear are driven to rotate by starting the motor. The second bevel gear rotates to drive the first rotating rod to rotate, and then drives the first gear to rotate on the second rack, driving the push plate and the injection push rod to rise and fall, so as to achieve the effect of making the injection volume more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A three-dimensional diagram of the miniaturized sample syringe proposed by the utility model;
[0019] Figure 2This is a schematic diagram of the housing of the miniaturized sample syringe proposed by the utility model;
[0020] Figure 3 This is a schematic diagram of the annular internal gear of the miniaturized sample syringe proposed by the utility model;
[0021] Figure 4 This is a schematic diagram of the push plate of the miniaturized sample syringe proposed by the utility model.
[0022] Legend:
[0023] 1. Clamping plate; 2. First rack; 3. Gear column; 4. Fixed shaft; 5. Housing; 6. Pull rod; 7. Tension spring; 8. Sliding rod; 9. Annular internal gear; 10. Sample storage tube; 11. Sample push tube; 12. Fixed ring; 13. Injection push rod; 14. Fixed column; 15. Second rack; 16. First gear; 17. First rotating rod; 18. Push plate; 19. Second bevel gear; 20. Third bevel gear; 21. Second rotating rod; 22. Worm gear; 23. Worm; 24. Motor. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings of the specification 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 of 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] Reference Figure 1-Figure 3The utility model provides an embodiment: a miniaturized sample syringe, comprising a clamping plate 1, the outer wall of the clamping plate 1 is fixedly connected with a first rack 2, the outer wall of the first rack 2 is meshedly connected with a gear column 3, the inner wall of the gear column 3 is rotatably connected with a fixed shaft 4, the outer wall of the fixed shaft 4 is fixedly connected with a shell 5, the outer wall of the shell 5 is fixedly connected with a pull rod 6, the outer wall of the pull rod 6 is fixedly connected with a tension spring 7, the outer wall of the tension spring 7 is fixedly connected with a sliding rod 8, the outer wall of the sliding rod 8 is fixedly connected with an annular internal gear 9, the outer wall of the first rack 2 is slidably connected to the inner wall of the shell 5, the outer wall of the fixed shaft 4 is meshedly connected to the annular internal gear 9, the outer wall of the annular internal gear 9 is slidably connected to the inner wall of the shell 5, the outer wall of the sliding rod 8 is slidably connected to the inner wall of the shell 5, the outer wall of the clamping plate 1 is slidably connected to the outer wall of the shell 5, the outer wall of the clamping plate 1 is slidably connected to the outer wall of the shell 5, the outer wall of the clamping plate 1 is slidably connected with a sample storage tube 10, and the outer wall of the shell 5 is provided with an injection assembly, and the injection assembly is used to push the chemical sample out for testing; the injection assembly includes a sample pushing tube 11, the outer wall of the sample pushing tube 11 is fixedly connected to the outer wall of the shell 5, the outer wall of the sample pushing tube 11 is fixedly provided with a fixing ring 12, the interior of the sample pushing tube 11 is slidably connected with an injection push rod 13, and the outer wall of the injection push rod 13 is slidably connected to the inner wall of the fixing ring 12;
[0026] Specifically, the annular internal gear 9 is driven to rotate by pulling the sliding rod 8, and the rotation of the annular internal gear 9 drives the gear column 3 to rotate on the fixed shaft 4. The rotation of the gear column 3 drives the first rack 2 and the clamping plate 1 to translate outward, and the sliding rod 8 is released, so that the tension spring 7 pulls the sliding rod 8 back, thereby achieving the effect of quickly installing and disassembling the sample storage tube 10, and the air located in the sample push tube 11 is pushed into the sample storage tube 10 through the injection push rod 13, thereby achieving the effect of injecting the sample.
[0027] Reference Figure 4 The outer wall of the fixing ring 12 is fixedly connected with a fixing column 14, and the outer wall of the fixing column 14 is fixedly connected with a second rack 15; the outer wall of the second rack 15 is meshedly connected with a first gear 16, and the inner wall of the first gear 16 is fixedly connected with a first rotating rod 17; the outer wall of the injection push rod 13 is fixedly connected with a push plate 18, and the outer wall of the first rotating rod 17 is rotatably connected to the inner wall of the push plate 18; both ends of the first rotating rod 17 are fixedly connected with a second bevel gear 19, and the outer wall of the second bevel gear 19 is meshedly connected with a third bevel gear 20;
[0028] Specifically, the third bevel gear 20 rotates to drive the second bevel gear 19, the first rotating rod 17 and the first gear 16 to rotate, and the first gear 16 rotates on the second rack 15 to drive the push plate 18 to rise and fall, thereby achieving the effect of quantitative injection.
[0029] Reference Figure 4The inner wall of the third bevel gear 20 is fixedly connected with the second rotating rod 21, and the outer wall of the second rotating rod 21 is rotatably connected to the inner wall of the push plate 18; the middle outer wall of the second rotating rod 21 is fixedly connected with the worm gear 22, the outer wall of the push plate 18 is fixedly connected with the motor 24, the output end of the motor 24 is fixedly connected with the worm 23, and the outer wall of the worm gear 22 is meshedly connected with the outer wall of the worm 23;
[0030] Specifically, by starting the motor 24, the worm 23 and the worm wheel 22 are driven to rotate. The rotation of the worm wheel 22 drives the second rotating rod 21 and the third bevel gear 20 to rotate. The rotation of the third bevel gear 20 drives the second bevel gear 19 and the first rotating rod 17 to rotate, so that the two first rotating rods 17 rotate in opposite directions, providing power for lifting.
[0031] Working principle: when the syringe is needed, the sliding rod 8 is pulled to slide in the housing 5, and the sliding of the sliding rod 8 drives the annular inner gear 9 to rotate. During use, the rotation of the annular inner gear 9 drives the gear column 3 to rotate on the outer wall of the fixed shaft 4, and the rotation of the gear column 3 drives the first rack 2 to translate outward in the housing 5. During use, the translation of the first rack 2 drives the clamping plate 1 to translate outward, so as to achieve the effect of quickly disassembling the sample storage tube 10. During use, the sliding rod 8 is loosened so that the tension spring 7 pulls the sliding rod 8 back, so as to achieve the effect of installing the sample storage tube 10. During use, the worm 23 is driven to rotate by starting the motor 24, and the rotation of the worm 23 drives the worm wheel 22 to rotate, and the rotation of the worm wheel 22 drives the second rotating rod 21 The second bevel gear 19 is driven to rotate when the second rotating rod 21 rotates. During use, the third bevel gear 20 rotates to drive the second bevel gear 19 to rotate. The second bevel gear 19 rotates to drive the first rotating rod 17 to rotate. During use, the first rotating rod 17 rotates to drive the first gear 16 to rotate. During use, the first gear 16 rotates on the second rack 15 to drive the push plate 18 to translate left and right. The translation of the push plate 18 drives the injection push rod 13 to translate left and right, so as to achieve the effect of making the injection volume more precise. The syringe can not only quickly install and disassemble the sample tube 10, but also can inject different samples without cleaning the syringe. Mechanical injection can also be used to make the injection volume more accurate.
[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A miniaturized sample syringe, comprising a clamping plate (1), characterized in that: The outer wall of the clamping plate (1) is fixedly connected to a first rack (2), the outer wall of the first rack (2) is meshingly connected to a gear column (3), the inner wall of the gear column (3) is rotatably connected to a fixed shaft (4), the outer wall of the fixed shaft (4) is fixedly connected to a housing (5), the outer wall of the housing (5) is fixedly connected to a pull rod (6), the outer wall of the pull rod (6) is fixedly connected to a tension spring (7), the outer wall of the tension spring (7) is fixedly connected to a sliding rod (8), the outer wall of the sliding rod (8) is fixedly connected to an annular internal gear (9), and the first The outer wall of the rack (2) is slidably connected to the inner wall of the outer shell (5), the outer wall of the fixed shaft (4) is meshingly connected to the inner wall of the annular internal gear (9), the outer wall of the annular internal gear (9) is slidably connected to the inner wall of the outer shell (5), the outer wall of the sliding rod (8) is slidably connected to the inner wall of the outer shell (5), the outer wall of the clamping plate (1) is slidably connected to the outer wall of the outer shell (5), the outer wall of the clamping plate (1) is slidably connected to the sample storage tube (10), and the outer wall of the outer shell (5) is provided with an injection assembly, which is used to push the chemical sample out for testing.
2. The miniaturized sample syringe according to claim 1, characterized in that: The injection assembly comprises a sample pushing tube (11), the outer wall of which is fixedly connected to the outer wall of the housing (5), a fixing ring (12) is fixedly connected to the outer wall of the sample pushing tube (11), an injection push rod (13) is slidably connected to the interior of the sample pushing tube (11), and the outer wall of the injection push rod (13) is slidably connected to the inner wall of the fixing ring (12).
3. The miniaturized sample syringe according to claim 2, characterized in that: A fixing column (14) is fixedly connected to the outer wall of the fixing ring (12), and a second rack (15) is fixedly connected to the outer wall of the fixing column (14).
4. The miniaturized sample syringe according to claim 3, characterized in that: The outer wall of the second rack (15) is meshingly connected to the first gear (16), and the inner wall of the first gear (16) is fixedly connected to the first rotating rod (17).
5. The miniaturized sample syringe according to claim 4, characterized in that: The outer wall of the injection push rod (13) is fixedly connected to a push plate (18), and the outer wall of the first rotating rod (17) is rotatably connected to the inner wall of the push plate (18).
6. The miniaturized sample syringe according to claim 4, characterized in that: Both ends of the first rotating rod (17) are fixedly connected to a second bevel gear (19), and the outer wall of the second bevel gear (19) is meshingly connected to a third bevel gear (20).
7. The miniaturized sample syringe according to claim 6, characterized in that: The inner wall of the third bevel gear (20) is fixedly connected to a second rotating rod (21), and the outer wall of the second rotating rod (21) is rotatably connected to the inner wall of the push plate (18).
8. The miniaturized sample syringe according to claim 7, characterized in that: A worm wheel (22) is fixedly connected to the middle outer wall of the second rotating rod (21), a motor (24) is fixedly connected to the outer wall of the push plate (18), a worm (23) is fixedly connected to the output end of the motor (24), and the outer wall of the worm wheel (22) is meshingly connected to the outer wall of the worm (23).