A drug inspection sampler with good sealing performance
By designing drug inspection samplers with components such as injection barrels, drug liquid tubes and drive motors, the isolation between drug liquid and air and preventing return flow is achieved, the problems of air contact and return flow in existing samplers are solved, and the accuracy of drug inspection is improved.
Patent Information
- Application Number
- CN202510698970.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2045-05-28
AI Technical Summary
It is difficult for existing drug samplers to effectively avoid direct contact between air and the drug liquid during sampling, and lack a return-proof design, which leads to air return and affects the reliability of drug inspection results.
The sealed drug inspection sampler consisting of components such as injection barrels, drug liquid pipes, and drive motors is used to accurately control the nitrogen pipes and ventilators, and the gear rotation is driven by the drive motor to achieve accurate transport of nitrogen and drug liquids and prevent return flow, and the buffer grooves and ball plugs are used to prevent air from flowing back.
It realizes effective isolation between the drug liquid and the air, prevents air from flowing back, ensures the accuracy and reliability of drug inspection results, and simplifies the operation process.
Smart Images
Figure CN120213553B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of medicine collection, in particular to a medicine inspection sampler with good sealing performance. Background Art
[0002] A drug inspection sampler is a professional tool for collecting drug samples. It is mainly used for quality inspection and monitoring in drug production, circulation, and use. Drug inspection samplers are generally made of corrosion-resistant, wear-resistant, and non-toxic materials. The sampler should be easy to clean and disinfect to prevent residual drugs from contaminating the next sampling. At the same time, it must have good sealing properties to avoid interference from external factors during sampling, transportation, and storage.
[0003] From the perspective of existing technology, common drug samplers are often collected and sucked out manually. It is difficult for existing drug samplers to effectively avoid direct contact between air and drug liquid during sampling. In terms of gas and drug liquid delivery control, existing samplers cannot simply control valves and rotate handles to achieve precise delivery switching of nitrogen and drug liquid. The operation process is complicated and delivery errors are prone to occur. Existing samplers do not have a backflow prevention design in the exhaust link. When the exhaust is stopped, air backflow is likely to occur. If the collected drugs are easily oxidized or air-sensitive, the air backflow will change the sample composition, affecting the reliability of the drug inspection results. For this reason, we propose a drug inspection sampler with good sealing performance. Summary of the Invention
[0004] In response to the shortcomings of the existing technology, the present invention provides a drug inspection sampler with good sealing performance, which solves the problem that the existing collector is difficult to effectively prevent direct contact between air and drug liquid, has no anti-backflow design, and is prone to air backflow when the exhaust is stopped.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a drug inspection sampler with good sealing performance, including an injection barrel, a drug liquid tube, and a drive motor, the injection barrel is a cylindrical structure, and a cavity is provided on the inner side of the injection barrel, the cavity is a conical structure, a threaded hole is provided on one side plane of the injection barrel, and a support plate is installed in the middle position of the other side plane of the injection barrel, a drainage groove is provided on the side of the cavity away from the threaded hole, and the drainage groove is connected with the cavity and the threaded hole, the drainage groove passes through the injection barrel, a puncture needle is installed in the middle position of the support plate, one end of the puncture needle extends into the interior of the drainage groove, and the other end of the puncture needle is away from the injection barrel, the internal thread of the threaded hole is connected to a threaded rod, and the screw One end of the threaded rod is placed in the cavity, and the other end of the threaded rod is placed on the outside of the injection barrel. The end of the threaded rod placed on the outside of the injection barrel is fixedly connected to the rotating handle, and the end of the threaded rod placed inside the cavity is equipped with a vent tube. One end of the vent tube is fixedly connected to the threaded rod, and the other end of the vent tube is fixedly connected to the medicine liquid plug. The medicine liquid plug has a conical structure, and the arc-shaped outer wall of the medicine liquid plug is in close contact with the arc-shaped inner wall of the drainage trough. An air hole is provided on the medicine liquid plug, and the air hole is connected to the vent tube. An air hole is provided on the arc-shaped side of the vent tube. A nitrogen tube is installed on one side of the injection barrel, and the nitrogen tube passes through the injection barrel. The nozzle position of the nitrogen tube is placed in the cavity, and the nozzle position of the nitrogen tube corresponds to the position of the vent hole.
[0006] Preferably, an exhaust needle is installed on the support plate, and the exhaust needle is placed on one side of the puncture needle. An exhaust pipe is installed inside the injection barrel, and the exhaust needle is connected to the exhaust pipe. A buffer groove is opened in the middle position of the exhaust pipe, and the buffer groove is a cylindrical notch, and a baffle is installed in the middle position of the buffer groove. The baffle is an annular structure, and the arc-shaped outer wall of the baffle is fixedly connected to the inner wall of the buffer groove. A sleeve is installed on one side of the baffle, and one end of the sleeve is fixedly connected to one side of the baffle, and one end of the sleeve is fixedly connected to the outer side of the inner ring of the baffle, and the other end of the sleeve is fixedly connected to the inner wall of the buffer groove.
[0007] Preferably, the sleeve has a cylindrical hollow structure, and openings are provided at both ends of the sleeve. A ball plug is installed inside the sleeve, and the ball plug has a spherical structure, and the curvature of the ball plug corresponds to the curvature of the opening of the exhaust pipe. A spring is installed on the side of the ball plug away from the exhaust pipe, one end of the spring is fixedly connected to the ball plug, and the other end of the spring is fixedly connected to the baffle.
[0008] Preferably, a medicine liquid tube is installed on the side of the injection barrel away from the nitrogen tube, and a sampling valve is installed on the medicine liquid tube. The medicine liquid tube is connected to the cavity inside the injection barrel, and the sampling valve is a spherical hollow structure, and both ends of the sampling valve are connected to the medicine liquid tube. A liquid baffle is installed inside the sampling valve, and the liquid baffle is a bent structure. The liquid baffle is fixedly connected to the inner wall of the sampling valve and is integrally formed.
[0009] Preferably, a delivery hole is opened in the middle position of the liquid baffle, a valve plug is installed at the delivery hole position, a connecting rod is installed at a position of the valve plug away from the delivery hole, the valve plug is installed at one end of the connecting rod, and a pressing handle is installed at the other end of the connecting rod, and the connecting rod is slidably connected to the sampling valve.
[0010] Preferably, a groove is provided on the arc-shaped side of the cavity, and a liquid-blocking flange is installed in the groove. The liquid-blocking flange is an annular structure, and the outer arc-shaped surface of the liquid-blocking flange is placed in the groove on the inner wall of the cavity, and the inner arc-shaped surface of the liquid-blocking flange is sleeved on the outside of the ventilation pipe.
[0011] Preferably, a sampling cabin is installed on the plane of one end of the injection barrel away from the threaded hole, a collecting bottle is installed in the sampling cabin, the bottle mouth of the collecting bottle is positioned toward the direction of the puncture needle, and a rubber stopper is installed at the opening position of the collecting bottle, and a lifting plate is installed on the collecting bottle away from the puncture needle.
[0012] Preferably, a sliding sleeve is installed on the side of the lifting plate away from the collection bottle. The sliding sleeve has a square hollow structure, and the interior of the sliding sleeve is rotatably connected to a rotating rod. A thread is provided on the arc-shaped outer wall of the rotating rod. A slider is slidably connected to the sliding sleeve, and a threaded hole is provided in the middle position of the slider. The slider is sleeved on the outer side of the rotating rod based on the threaded hole, and a sliding rod is fixedly connected to the slider. The sliding rod has a square hollow structure, one end of the sliding rod is fixedly connected to the slider, and the other end of the sliding rod is placed on the outer side of the sliding sleeve and fixedly connected to the lifting plate.
[0013] Preferably, a driven wheel is installed at one end of the rotating rod away from the lifting plate, and a gear is installed on the side of the driven wheel, and the gear is engaged with the driven wheel.
[0014] Preferably, a driving motor is installed on one side plane of the gear, the housing of the driving motor is fixedly connected to the inner wall of the collection cabin, and the output end of the driving motor is fixedly connected to the gear.
[0015] In summary, the technical effects and advantages of the present invention are:
[0016] 1. In the present invention, the collection bottle is mounted on the lifting plate, and the driving motor is used to drive the gear to rotate. Since the gear is meshed with the driven wheel, and the driven wheel is fixedly connected to the rotating rod, the driving motor drives the rotating rod to rotate. The rotating rod rotates, so that the slider threaded on the rotating rod slides in the sliding sleeve, driving the sliding rod to rise and fall, so as to drive the collection bottle to dock with the support plate. The puncture needle and the exhaust needle on the support plate are inserted into the collection bottle, and the nitrogen pipe outputs nitrogen. The nitrogen is introduced from the ventilation pipe to the position of the liquid medicine plug, and is introduced into the collection bottle from the gas delivery hole in the liquid medicine plug through the puncture needle. Since the nitrogen is pressurized, the air inside the collection bottle is dispersed and discharged from the exhaust pipe, so that the air in the collection bottle is discharged, preventing the air from directly contacting the liquid medicine.
[0017] 2. In the present invention, the nitrogen tube is equipped with a valve. When the nitrogen tube is closed, the collection valve on the medicine liquid tube is opened, and the pressing handle on the collection valve is pulled to separate the liquid baffle from the delivery hole, so that the medicine liquid flows from one side of the liquid baffle to the injection barrel, and the medicine liquid flows into the cavity. Since the medicine liquid plug is in close contact with the drainage groove, the rotating handle is turned, and when the medicine liquid plug is in close contact with the drainage groove, the vent is connected to the nitrogen tube. At this time, the puncture needle outputs nitrogen. When the valve on the nitrogen tube is closed and the sampling valve is opened, the cavity is filled with medicine liquid, and the rotating handle is turned to separate the vent from the nitrogen hole, so that the remaining nitrogen in the nitrogen tube cannot be discharged, and the medicine liquid plug is separated from the drainage groove. At this time, the puncture needle outputs the medicine liquid into the collection bottle.
[0018] 3. In the present invention, when the puncture needle inputs nitrogen into the collection bottle, the exhaust pipe discharges air and excess nitrogen. A buffer groove is provided on the exhaust pipe. A ball plug installed inside the buffer groove is used to resist the exhaust pipe to prevent air backflow when the exhaust is stopped. When the exhaust pipe outputs, the pressure is greater than the force of the spring, driving the ball plug to separate from the exhaust pipe to facilitate exhaust. When the pressure is less than the force of the spring, the ball plug rebounds to block the exhaust hole to prevent backflow. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the overall structure of a drug inspection sampler with good sealing performance according to the present invention;
[0020] Figure 2 This is a schematic diagram of the overall structure of a drug inspection sampler with good sealing performance from another angle of the present invention;
[0021] Figure 3 This is a cross-sectional view of the overall structure of a drug inspection sampler with good sealing performance according to the present invention;
[0022] Figure 4 This is a structural cross-sectional view of an injection barrel in a drug inspection sampler with good sealing performance according to the present invention;
[0023] Figure 5This is a schematic structural diagram of a vent pipe in a drug inspection sampler with good sealing performance according to the present invention;
[0024] Figure 6 The invention provides a drug inspection sampler with good sealing performance. Figure 3 A magnified schematic diagram of the structure at A in the middle;
[0025] Figure 7 The invention is a medicine inspection sampler with good sealing performance Figure 3 A magnified schematic diagram of the structure at point B.
[0026] In the figure: 1. Injection barrel; 2. Sampling chamber; 3. Drug liquid tube; 4. Nitrogen tube; 5. Exhaust pipe; 6. Sampling valve; 7. Press handle; 8. Liquid baffle; 9. Delivery hole; 10. Valve plug; 11. Cavity; 12. Threaded hole; 13. Threaded rod; 14. Rotating handle; 15. Vent tube; 16. Vent hole; 17. Drug liquid plug; 18. Air delivery hole; 19. Drain trough; 20. Liquid blocking flange; 21. Support plate; 22. Puncture needle; 23. Exhaust needle; 24. Buffer tank; 25. Cannula; 26. Baffle; 27. Ball plug; 28. Spring; 29. Collection bottle; 30. Lifting plate; 31. Sliding rod; 32. Sliding block; 33. Rotating rod; 34. Sleeve; 35. Driven wheel; 36. Gear; 37. Drive motor. DETAILED DESCRIPTION
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0028] refer to Figure 1-Figure 7The drug inspection sampler with good sealing performance shown in the figure includes an injection barrel 1, a liquid medicine tube 3, and a drive motor 37. The injection barrel 1 is a cylindrical structure, and a cavity 11 is opened on the inner side of the injection barrel 1. The cavity 11 is a conical structure. A threaded hole 12 is opened on one side plane of the injection barrel 1, and a support plate 21 is installed in the middle position of the other side plane of the injection barrel 1. A drainage groove 19 is opened on the side of the cavity 11 away from the threaded hole 12, and the drainage groove 19 is connected with the cavity 11 and the threaded hole 12. The drainage groove 19 passes through the injection barrel 1, and a puncture needle 22 is installed in the middle position of the support plate 21. One end of the threaded hole 12 extends into the interior of the drainage groove 19, and the other end of the puncture needle 22 is away from the injection barrel 1. The internal thread of the threaded hole 12 is connected to the threaded rod 13. One end of the threaded rod 13 is placed in the cavity 11, and the other end of the threaded rod 13 is placed on the outside of the injection barrel 1. The end of the threaded rod 13 placed on the outside of the injection barrel 1 is fixedly connected to the rotating handle 14, and the end of the threaded rod 13 placed inside the cavity 11 is installed with a vent tube 15. One end of the vent tube 15 is fixedly connected to the threaded rod 13, and the other end of the vent tube 15 is fixedly connected to the liquid medicine plug 17. The liquid medicine plug 17 has a conical structure, and the arc of the liquid medicine plug 17 The outer wall of the injection barrel 1 is in close contact with the arc-shaped inner wall of the drainage groove 19, and an air delivery hole 18 is provided on the liquid medicine plug 17, and the air delivery hole 18 is connected to the vent pipe 15. A vent hole 16 is provided on the arc-shaped side of the vent pipe 15. A nitrogen pipe 4 is installed on one side of the injection barrel 1, and the nitrogen pipe 4 passes through the injection barrel 1. The nozzle position of the nitrogen pipe 4 is placed in the cavity 11, and the nozzle position of the nitrogen pipe 4 corresponds to the position of the vent hole 16. The nitrogen pipe 4 has its own valve. When the nitrogen pipe 4 is closed, the collection valve on the liquid medicine pipe 3 is opened, and the pressing handle 7 on the collection valve is pulled to separate the liquid baffle 8 from the delivery hole 9, so that the liquid medicine flows out from the baffle. One side of the liquid plate 8 flows to the injection barrel 1, and the medicine flows into the cavity 11. Since the medicine plug 17 is in close contact with the drainage groove 19, the rotating handle 14 is turned, and when the medicine plug 17 is in close contact with the drainage groove 19, the vent 16 is connected to the nitrogen pipe 4. At this time, the puncture needle 22 outputs nitrogen. When the valve on the nitrogen pipe 4 is closed and the sampling valve 6 is opened, the cavity 11 is filled with medicine. The rotating handle 14 is turned to separate the vent 16 from the nitrogen hole, so that the remaining nitrogen in the nitrogen pipe 4 cannot be discharged, and the medicine plug 17 is separated from the drainage groove 19. At this time, the puncture needle 22 outputs the medicine into the collection bottle 29.
[0029] Among them, an exhaust needle 23 is installed on the support plate 21, and the exhaust needle 23 is placed on one side of the puncture needle 22. An exhaust pipe 5 is installed inside the injection barrel 1, and the exhaust needle 23 is connected to the exhaust pipe 5. A buffer groove 24 is provided in the middle of the exhaust pipe 5. The buffer groove 24 is a cylindrical notch, and a baffle 26 is installed in the middle of the buffer groove 24. The baffle 26 is annular in structure, and the arc-shaped outer wall of the baffle 26 is fixedly connected to the inner wall of the buffer groove 24. A sleeve 25 is installed on one side of the baffle 26, and one end of the sleeve 25 is fixedly connected to one side of the baffle 26. One end of the sleeve 25 is fixedly connected to the outer side of the inner ring of the baffle 26, and the other end of the sleeve 25 is fixedly connected to the inner wall of the buffer groove 24. The sleeve 25 is a cylindrical hollow structure, and openings are provided at both ends of the sleeve 25. The inside of the sleeve 25 A ball plug 27 is installed, and the ball plug 27 has a spherical structure, and the curvature of the ball plug 27 corresponds to the curvature of the opening of the exhaust pipe 5. A spring 28 is installed on the side of the ball plug 27 away from the exhaust pipe 5. One end of the spring 28 is fixedly connected to the ball plug 27, and the other end of the spring 28 is fixedly connected to the baffle 26. When the puncture needle 22 inputs nitrogen into the collection bottle 29, the exhaust pipe 5 discharges air and excess nitrogen. A buffer groove 24 is provided on the exhaust pipe 5. The ball plug 27 installed inside the buffer groove 24 is used to offset the exhaust pipe 5 to prevent air backflow when the exhaust is stopped. When the exhaust pipe 5 outputs, the pressure is greater than the force of the spring 28, which drives the ball plug 27 to separate from the exhaust pipe 5 to facilitate exhaust. When the pressure is less than the force of the spring 28, the ball plug 27 rebounds to block the exhaust hole to prevent backflow.
[0030] Among them, a liquid medicine tube 3 is installed on the side of the injection barrel 1 away from the nitrogen tube 4, and a sampling valve 6 is installed on the liquid medicine tube 3. The liquid medicine tube 3 is connected to the cavity 11 inside the injection barrel 1. The sampling valve 6 is a spherical hollow structure, and both ends of the sampling valve 6 are connected to the liquid medicine tube 3. A liquid baffle 8 is installed inside the sampling valve 6. The liquid baffle 8 is a bent structure. The liquid baffle 8 is fixedly connected to the inner wall of the sampling valve 6 and is integrally formed. A delivery hole 9 is opened in the middle of the liquid baffle 8, and a valve plug is installed at the delivery hole 9. 10. A connecting rod is installed at a position where the valve plug 10 is away from the delivery hole 9. The valve plug 10 is installed at one end of the connecting rod, and a pressing handle 7 is installed at the other end of the connecting rod. The connecting rod is slidably connected to the sampling valve 6. A groove is provided on the arc-shaped side of the cavity 11, and a liquid-blocking flange 20 is installed in the groove. The liquid-blocking flange 20 has an annular structure, and the outer arc-shaped surface of the liquid-blocking flange 20 is placed in the groove on the inner wall of the cavity 11, and the inner arc-shaped surface of the liquid-blocking flange 20 is sleeved on the outer side of the ventilation pipe 15.
[0031] Among them, the sampling chamber 2 is installed on the plane of the end of the injection barrel 1 away from the threaded hole 12, and a collection bottle 29 is installed in the sampling chamber 2. The bottle mouth of the collection bottle 29 is facing the direction of the puncture needle 22, and a rubber stopper is installed at the opening position of the collection bottle 29. A lifting plate 30 is installed on the collection bottle 29 away from the puncture needle 22. A sliding sleeve 34 is installed on the side of the lifting plate 30 away from the collection bottle 29. The sliding sleeve 34 has a square hollow structure, and the internal rotation of the sliding sleeve 34 is connected to the rotating rod 33. The arc-shaped outer wall of the rotating rod 33 is provided with a thread. The sliding sleeve 34 The inner sliding connection is provided with a slider 32, and a threaded hole is provided in the middle position of the slider 32. The slider 32 is sleeved on the outer side of the rotating rod 33 based on the threaded hole. The sliding rod 31 is fixedly connected to the slider 32. The sliding rod 31 has a square hollow structure. One end of the sliding rod 31 is fixedly connected to the slider 32, and the other end of the sliding rod 31 is placed on the outer side of the sliding sleeve 34 and fixedly connected to the lifting plate 30. A driven wheel 35 is installed at the end of the rotating rod 33 away from the lifting plate 30. A gear 36 is installed on the side of the driven wheel 35. The gear 36 is meshed with the driven wheel 35. A drive motor 37 is installed on one side plane of 36. The shell of the drive motor 37 is fixedly connected to the inner wall of the collection cabin, and the output end of the drive motor 37 is fixedly connected to the gear 36. The collection bottle 29 is installed on the lifting plate 30, and the drive motor 37 drives the gear 36 to rotate. Since the gear 36 is engaged with the driven wheel 35, and the driven wheel 35 is fixedly connected to the rotating rod 33, the drive motor 37 drives the rotating rod 33 to rotate. The rotating rod 33 rotates, causing the slider 32 threaded on the rotating rod 33 to slide in the sliding sleeve 34. The sliding rod 31 moves up and down, so as to drive the collection bottle 29 to dock with the support plate 21. The puncture needle 22 and the exhaust needle 23 on the support plate 21 are inserted into the collection bottle 29. The nitrogen pipe 4 outputs nitrogen, and the nitrogen is introduced from the vent pipe 15 to the position of the liquid medicine plug 17. The nitrogen is introduced into the collection bottle 29 through the puncture needle 22 from the gas delivery hole 18 in the liquid medicine plug 17. Since the nitrogen is pressurized, the air inside the collection bottle 29 is dispersed and discharged from the exhaust pipe 5, so that the air in the collection bottle 29 is discharged to prevent the air from directly contacting the liquid medicine.
[0032] The working principle of the present invention is as follows: the collection bottle 29 is installed on the lifting plate 30, and the driving motor 37 is used to drive the gear 36 to rotate. Since the gear 36 is engaged with the driven wheel 35, and the driven wheel 35 is fixedly connected to the rotating rod 33, the driving motor 37 drives the rotating rod 33 to rotate. The rotating rod 33 rotates, so that the slider 32 threaded on the rotating rod 33 slides in the sliding sleeve 34, driving the sliding rod 31 to rise and fall, so as to drive the collection bottle 29 to dock with the support plate 21, and the puncture needle 22 and the exhaust needle 23 on the support plate 21 are connected. Inserted into the collection bottle 29, the nitrogen pipe 4 outputs nitrogen, and the nitrogen is introduced from the vent pipe 15 to the position of the liquid medicine plug 17, and is introduced into the collection bottle 29 from the air delivery hole 18 in the liquid medicine plug 17 through the puncture needle 22. Since the nitrogen is introduced with pressure, the air inside the collection bottle 29 is dispersed and discharged from the exhaust pipe 5, so that the air in the collection bottle 29 is discharged to prevent the air from directly contacting the liquid medicine; the nitrogen pipe 4 has a valve. When the nitrogen pipe 4 is closed, the collection valve on the liquid medicine pipe 3 is opened, and the pressing handle 7 on the collection valve is pulled up so that the liquid baffle 8 and the delivery hole 9 are in contact. Separation, so that the liquid medicine flows from one side of the baffle plate 8 to the injection barrel 1, and the liquid medicine flows into the cavity 11. Since the liquid medicine plug 17 is in close contact with the drainage groove 19, the rotating handle 14 is turned. When the liquid medicine plug 17 is in close contact with the drainage groove 19, the vent 16 is connected to the nitrogen pipe 4. At this time, the puncture needle 22 outputs nitrogen. When the valve on the nitrogen pipe 4 is closed and the sampling valve 6 is opened, the cavity 11 is filled with liquid medicine. The rotating handle 14 is turned to separate the vent 16 from the nitrogen hole, so that the remaining nitrogen in the nitrogen pipe 4 cannot be discharged, and the liquid medicine plug 17 is separated from the drainage groove 19. At this time, the puncture needle 22 outputs the medicine liquid into the collection bottle 29; when the puncture needle 22 inputs nitrogen into the collection bottle 29, the exhaust pipe 5 discharges air and excess nitrogen. A buffer groove 24 is provided on the exhaust pipe 5. The ball plug 27 installed inside the buffer groove 24 is used to resist the exhaust pipe 5 to prevent air backflow when the exhaust is stopped. When the exhaust pipe 5 outputs, the pressure is greater than the force of the spring 28, which drives the ball plug 27 to separate from the exhaust pipe 5 to facilitate exhaust. When the pressure is less than the force of the spring 28, the ball plug 27 rebounds to block the exhaust hole to prevent backflow.
[0033] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device that performs control such as a computer.
[0034] 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 scope of protection of the present invention.
Claims
1. A drug inspection sampler with good sealing performance, comprising an injection barrel and a drive motor, characterized in that: The injection barrel is a cylindrical structure, and a cavity is provided on the inner side of the injection barrel. A threaded hole is provided on one side plane of the injection barrel, and a support plate is installed in the middle position of the other side plane of the injection barrel. A drainage groove is provided on the side of the cavity away from the threaded hole, and the drainage groove is connected with the cavity and the threaded hole. The drainage groove passes through the injection barrel, and a puncture needle is installed in the middle position of the support plate. One end of the puncture needle extends into the interior of the drainage groove, and the other end of the puncture needle is away from the injection barrel. The internal thread of the threaded hole is connected to a threaded rod, and the threaded rod is placed on a side outside the injection barrel. The end is fixedly connected to the rotating handle, and a vent tube is installed at one end of the threaded rod placed inside the cavity, one end of the vent tube is fixedly connected to the threaded rod, and the other end of the vent tube is fixedly connected to the liquid medicine plug, the liquid medicine plug has a conical structure, and the arc-shaped outer wall of the liquid medicine plug is in close contact with the arc-shaped inner wall of the drainage groove, an air delivery hole is provided on the liquid medicine plug, and the air delivery hole is connected to the vent tube, a vent hole is provided on the arc-shaped side of the vent tube, a nitrogen tube is installed on one side of the injection barrel, the nozzle position of the nitrogen tube is placed in the cavity, and the nozzle position of the nitrogen tube corresponds to the position of the vent hole; A medicine liquid tube is installed on the side of the injection barrel away from the nitrogen tube, and a sampling valve is installed on the medicine liquid tube. The medicine liquid tube is connected to the cavity inside the injection barrel. The sampling valve has a spherical hollow structure, and both ends of the sampling valve are connected to the medicine liquid tube. A liquid baffle is installed inside the sampling valve. The liquid baffle has a bent structure and is fixedly connected to the inner wall of the sampling valve and is integrally formed. A delivery hole is provided in the middle of the liquid baffle plate, a valve plug is installed at the delivery hole position, a connecting rod is installed at a position of the valve plug away from the delivery hole, the valve plug is installed at one end of the connecting rod, and a pressing handle is installed at the other end of the connecting rod, and the connecting rod is slidably connected to the sampling valve; A groove is provided on the arc-shaped side of the cavity, and a liquid-blocking flange is installed in the groove. The liquid-blocking flange has an annular structure, and the outer arc-shaped surface of the liquid-blocking flange is placed in the groove on the inner wall of the cavity, and the inner arc-shaped surface of the liquid-blocking flange is sleeved on the outer side of the vent pipe.
2. A drug inspection sampler with good sealing performance according to claim 1, characterized in that: An exhaust needle is installed on the support plate, and the exhaust needle is placed on one side of the puncture needle. An exhaust pipe is installed inside the injection barrel, and the exhaust needle is connected to the exhaust pipe. A buffer groove is opened in the middle position of the exhaust pipe, and the buffer groove is a cylindrical notch, and a baffle is installed in the middle position of the buffer groove. The baffle is an annular structure, and the arc-shaped outer wall of the baffle is fixedly connected to the inner wall of the buffer groove. A sleeve is installed on one side of the baffle, and one end of the sleeve is fixedly connected to one side of the baffle, and one end of the sleeve is fixedly connected to the outer side of the inner ring of the baffle, and the other end of the sleeve is fixedly connected to the inner wall of the buffer groove.
3. A drug inspection sampler with good sealing performance according to claim 2, characterized in that: The sleeve has a cylindrical hollow structure, and openings are provided at both ends of the sleeve. A ball plug is installed inside the sleeve. The ball plug has a spherical structure, and the curvature of the ball plug corresponds to the curvature of the opening of the exhaust pipe. A spring is installed on the side of the ball plug away from the exhaust pipe, one end of the spring is fixedly connected to the ball plug, and the other end of the spring is fixedly connected to the baffle.
4. The drug inspection sampler with good sealing performance according to claim 1, characterized in that: A sampling cabin is installed on the plane of one end of the injection barrel away from the threaded hole, and a collection bottle is installed in the sampling cabin. The bottle mouth of the collection bottle is facing the direction of the puncture needle, and a rubber stopper is installed at the opening position of the collection bottle. A lifting plate is installed on the collection bottle away from the puncture needle.
5. A drug inspection sampler with good sealing performance according to claim 4, characterized in that: A sliding sleeve is installed on the side of the lifting plate away from the collection bottle. The sliding sleeve has a square hollow structure, and the interior of the sliding sleeve is rotatably connected to a rotating rod. A thread is provided on the arc-shaped outer wall of the rotating rod. A slider is slidably connected to the sliding sleeve, and a threaded hole is provided in the middle position of the slider. The slider is sleeved on the outer side of the rotating rod based on the threaded hole, and a sliding rod is fixedly connected to the slider. The sliding rod has a square hollow structure, one end of the sliding rod is fixedly connected to the slider, and the other end of the sliding rod is placed on the outer side of the sliding sleeve and fixedly connected to the lifting plate.
6. A drug inspection sampler with good sealing performance according to claim 5, characterized in that: A driven wheel is installed at one end of the rotating rod away from the lifting plate, and a gear is installed on the side of the driven wheel, and the gear is meshed with the driven wheel.
7. A drug inspection sampler with good sealing performance according to claim 6, characterized in that: A driving motor is installed on a plane side of the gear, a shell of the driving motor is fixedly connected to the inner wall of the collection cabin, and an output end of the driving motor is fixedly connected to the gear.
Citation Information
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