A device for cleaning a syringe using air and inspecting the sealing performance of the syringe

Abstract

The invention discloses a device for cleaning syringes with air and checking the sealing performance of syringes, which comprises a transmission mechanism, a control mechanism, more than one fixing mechanism, and a base, wherein the control mechanism comprises a power adapter, a speed regulator, and a switch, the transmission mechanism comprises a motor, a connecting rod, a push rod, an inner rail fixing frame, a slide rail, a fixing seat II, and a push rod guide groove, and the fixing mechanism comprises a fixing seat I, more than one syringe piston slot, and more than one syringe body slot; the device can clean multiple syringes at one time; the probability of syringe contamination is reduced to the greatest extent possible during the whole process; it is not easy to cause damage to the syringe; the sealing oil film in the syringe is not damaged; the cleaning process is fully automated, thereby improving the efficiency of the entire experiment; after the device replaces manual labor, the number of air cleaning can be increased, and the cleaning effect is better; the inspection of the sealing performance of the syringe is effective and has a reliable basis for judgment.

Description

Technical Field

[0001] The present invention is a device that can be used for air cleaning of syringes and syringe sealing inspection, which can realize fully automatic and reliable airtightness inspection of the air cleaning process for syringes that need air cleaning and sealing inspection. It is particularly suitable for gas transfer or injection syringes used in the analysis of characteristic gas components dissolved in oil. Background Art

[0002] The gas transfer syringe and injection syringe used in the analysis of characteristic gas components dissolved in oil are recycled, that is, after storing the previous gas sample, the two syringes should be cleaned several times with the carrier gas used in the experiment to achieve the purpose of completely removing the previous sample in the two syringes and cleaning them, and then loading the next sample to continue the experiment. After years of comparative experiments, it is known that if nitrogen is used as a carrier gas in the analysis of characteristic gas components dissolved in oil, the gas transfer syringe and the injection syringe can be cleaned several times with air and then cleaned about five times with the high-purity nitrogen carrier gas used in the experiment. This can ensure that there is no residue of the previous sample in the two syringes, and ensure that the detection data of the next sample will not be interfered by the previous sample, avoiding distortion of the detection data; at the same time, it can also try to avoid the injection syringe. The needle must be taken with the needle to take the carrier gas to clean the syringe many times, which is very easy to cause the needle damage, and the syringe air tightness is easily affected after the needle is updated.

[0003] At present, the operation of using air to clean syringes is all done manually. However, there are many problems: it is time-consuming and labor-intensive, and the force of pulling or pushing the syringe piston by hand is difficult to control during the cleaning process, which often causes damage to the syringe; or because the manual cleaning of the syringe is completely exposed to the air, it is easy to cause water droplets, dust, hair or fibers and other dirt floating in the air or sweat, dandruff and other dirt on the hands of the experimenter to fall into or stick to the syringe piston, causing the piston to get stuck; at the same time, a person can only perform air cleaning on one syringe at a time, and the work efficiency is low.

[0004] According to the relevant requirements of GB / T17623, the gas transfer syringe used in the analysis of characteristic gas components dissolved in oil must ensure good airtightness throughout the experiment. Currently, the airtightness of the syringe is also checked manually. The method is to plug the needle position of the gas transfer syringe with a special rubber cap, and then the experimenter will pull out or push the syringe piston with appropriate force. If it is obviously difficult to do, it is judged that the syringe has good airtightness; if the piston can move after pulling or pushing, it is judged that the syringe is unqualified for airtightness.

[0005] When manually pulling out or pushing the syringe piston, firstly, the amount of force applied by different experimenters or the same experimenter each time is different; secondly, the stroke of the syringe piston being moved manually is judged by the naked eye, and the tiny movement of the piston cannot be accurately qualitatively and quantitatively judged solely by the naked eye without a fixed reference object, so the judgment results of the syringe sealing may be biased each time by different experimenters or the same experimenter. Summary of the invention

[0006] In order to overcome the various deficiencies in the existing manual process of cleaning syringes with air and manually checking the air tightness of syringes, the present invention provides a fully automatic air cleaning syringe and syringe air tightness checking device; the device can not only free the hands of the experimenter when using air to clean the syringe during the experiment, but also automatically use the device to perform several air pre-cleanings of the gas transfer syringe and the sampling syringe used in the analysis of characteristic gas components dissolved in oil with air, and at the same time can perform effective and reliable air tightness checks on the gas transfer syringe.

[0007] The device for cleaning syringes and checking the sealing performance of syringes by air comprises a transmission mechanism, a control mechanism, one or more fixing mechanisms, and a base, wherein the control mechanism comprises a power adapter, a speed regulator, and a switch, the power adapter and the speed regulator are arranged on the base, and the external power supply is connected to the switch through the power adapter; the transmission mechanism comprises a motor, a connecting rod, a push rod, an inner rail fixing frame, a slide rail, a fixing seat II, and a push rod guide groove, and the fixing mechanism comprises a fixing seat I, one or more syringe piston slots, and one or more syringe body slots; the switch is connected to the motor through the speed regulator, and the motor The output shaft is connected to one end of the connecting rod through a driving rod, the other end of the connecting rod is connected to one end of the push rod, the other end of the push rod passes through the push rod guide groove and is connected to the inner rail fixing frame, the fixing seat II is fixed on the base, the motor and the push rod guide groove are fixed on the fixing seat II, one end of the inner rail of the slide rail is fixed to the inner rail fixing frame, and the other end is arranged in the outer rail of the slide rail and cooperates with the outer rail to move along the outer rail, one end of the outer rail of the slide rail is fixed on the fixing seat I, and the other end is fixed on the base, the syringe piston slot is fixed on the outer rail of the slide rail and is located above the fixing seat I, and the syringe body slot is fixed on the inner rail of the slide rail.

[0008] The device also includes a dust cover, which is arranged on the syringe body card slot and located above the connection between the syringe body and the piston;

[0009] The device also comprises a quantitative ruler, which is arranged on the base and located at one side of the outer rail of the slide rail.

[0010] The device is connected to 220V AC power and converted to 12V through a power adapter; the syringe body without a rubber cap plug is placed on the syringe body slot, the tail end of the syringe piston is placed and fixed on the syringe piston slot, the dust cover is covered, the switch is turned on, the motor starts to run, the motor output shaft rotates clockwise, drives the connecting rod to rotate, and adjusts the appropriate speed; through the transmission of the connecting rod, the push rod drives the inner rail fixing frame to perform horizontal reciprocating motion; the syringe body is fixed on the syringe body slot on the inner rail of the slide rail, the push rod drives the syringe body to perform horizontal reciprocating motion, and the syringe piston is fixed on the outer rail of the slide rail and does not move; when the motor output shaft rotates clockwise from the starting position, the syringe body moves horizontally in the direction away from the syringe piston, and the syringe body is completely moved out until only part of the front end head of the piston remains in the body, and the exhaust process is completed at this time; when the motor output shaft continues to rotate clockwise, driving the connecting rod and the syringe body to move horizontally in the direction close to the syringe piston, the syringe body gradually moves from the front end head of the piston to the tail of the piston until more than 95% of the pistons are returned to the syringe body, and the exhaust process is completed at this time. The above exhaust process is a complete air cleaning cycle; by repeating this cycle several times, the air pre-cleaning process of the syringe can be completed several times; the cleaning process can be carried out simultaneously on multiple syringes, and will not cause the syringe body and the piston to separate, thereby destroying the sealing oil film artificially formed between the body and the piston, causing damage to the air tightness of the syringe.

[0011] Plug the needle of the syringe body with a rubber cap, and observe and record the scale position of the front end of the piston in the syringe body before turning on the switch; after turning on the switch, adjust the speed to the speed required for the air tightness check, and observe the changes in the scale position of the front end of the piston in the syringe body: if the scale position of the front end of the piston changes, it means that the syringe body and the piston are not well sealed or the rubber cap has poor sealing performance. If the scale position of the front end of the piston does not change, it means that the sealing performance of the entire syringe is good; the device can quantify the leakage of the syringe through a quantitative ruler, and can compare the air tightness of different syringes.

[0012] The beneficial effects of the patent of the present invention are: multiple syringes can be cleaned at the same time; the probability of syringe contamination is reduced to the greatest extent possible during the whole process; it is not easy to cause damage to the syringe; the sealing oil film in the syringe will not be destroyed; the cleaning process is fully automated, which improves the efficiency of the entire experiment; the number of air cleanings can be increased after the device replaces manual labor, and the cleaning effect is better; the inspection of the sealing performance of the syringe is effective and there is a reliable basis for judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the top view of the structure of the device of the present invention;

[0014] Figure 2It is a rear view structural schematic diagram of the device of the present invention;

[0015] Figure 3 It is a schematic diagram of the rotating structure of the motor part;

[0016] Figure 4 This is a schematic diagram of the device in the state of exhausting gas;

[0017] Figure 5 This is a schematic diagram of the exhaust state of the device;

[0018] In the figure: 1-power adapter; 2-speed regulator; 3-switch; 4-motor; 5-connecting rod; 6-push rod; 7-inner rail fixing bracket; 8-slide rail; 9-fixing seat I; 10-syringe piston slot; 11-syringe body slot; 12-fixing seat II; 13-push rod guide groove; 14-base; 15-dust cover; 16-inner rail; 17-outer rail; 18-external power supply; 19-syringe body; 20-syringe piston; 21-driving rod; 22-motor output shaft; 23-pin; 24-nut. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below through the accompanying drawings and embodiments, but the protection scope of the present invention is not limited to the contents described above.

[0020] Example 1: Figure 1 , 2As shown, the device for cleaning syringes and checking the sealing performance of syringes by air comprises a transmission mechanism, a control mechanism, four fixing mechanisms, a base 14, a dust cover 15, and a quantitative ruler, wherein the control mechanism comprises a power adapter 1, a speed regulator 2, and a switch 3, the transmission mechanism comprises a motor 4, a connecting rod 5, a push rod 6, an inner rail fixing frame 7, a slide rail 8, a fixing seat II 12, and a push rod guide groove 13, the fixing mechanism comprises a fixing seat I 9, four syringe piston slots 10, and four syringe body slots 11; the power adapter 1 and the speed regulator 2 are arranged on the base 14, the external power supply 18 is connected to the switch 3 through the power adapter 1, the switch 3 is connected to the motor 4 through the speed regulator 2, a driving rod 21 is fixed to the output shaft 22 of the motor 4, a pin 23 is arranged on the driving rod 21 and one end of the connecting rod 5 and its two ends are connected by nuts 2 4 is fastened, the other end of the connecting rod 5 is connected to one end of the push rod 6, the other end of the push rod 6 passes through the push rod guide groove 13 and is connected to the inner rail fixing frame 7, the fixing seat II 12 is fixed on the base 14, the motor 4 and the push rod guide groove 13 are fixed on the fixing seat II 12; one end of the inner rail 16 of the slide rail 8 is fixed to the inner rail fixing frame 7, and the other end is arranged in the outer rail 17 of the slide rail 8 and cooperates with the outer rail to move along the outer rail, one end of the outer rail 17 of the slide rail 8 is fixed to the fixing seat I9, and the other end is fixed to the base 14, the syringe piston slot 10 is fixed to the outer rail of the slide rail 8 and is located above the fixing seat I9, and the syringe body slot 11 is fixed to the inner rail 16 of the slide rail 8; the dust cover is arranged on the syringe body slot 11 and is located above the connection between the syringe body and the piston; the quantitative ruler is arranged on the base 14 and is located on one side of the outer rail 17 of the slide rail 8;

[0021] The device is connected to 220V AC power, which is converted to 12V through the power adapter 1; the syringe body 19 without the rubber cap is placed on the syringe body slot 11, the tail end of the syringe piston 20 is placed and fixed on the syringe piston slot 10, the dust cover 15 is covered, the switch 3 is turned on, the motor 4 starts to run, the motor output shaft 22 rotates clockwise from the starting position, driving the drive rod 21 to rotate, and adjusting the appropriate speed; driving the movement of the connecting rod 5 and the push rod 6, the push rod 6 drives the inner rail fixing frame 7 to do horizontal reciprocating motion; the syringe body 19 is fixed on the syringe body slot 11 on the inner rail 16 of the slide rail, and the push rod 6 drives the syringe body 19 to do horizontal reciprocating motion, while the syringe piston 20 is fixed on the outer rail 17 of the slide rail and does not move; when the motor output shaft rotates clockwise from the starting position, the syringe body moves horizontally away from the syringe piston, and the syringe body is completely moved out until only part of the front end of the piston remains in the body, at which time the air extraction process is completed; when the motor output shaft continues to rotate clockwise, driving the connecting rod and the syringe body to move horizontally in the direction close to the syringe piston, the syringe body gradually moves from the front end of the piston to the tail of the piston until more than 95% of the pistons return to the syringe body, at which time the exhaust process is completed. The above exhaust process is a complete air cleaning cycle; by repeating this cycle several times, the air pre-cleaning process of the syringe can be completed several times; this cleaning process can be carried out on multiple syringes simultaneously, and will not cause the syringe body to separate from the piston, thereby destroying the artificially formed sealing oil film between the body and the piston, causing damage to the air tightness of the syringe.

[0022] Plug the needle of the syringe body with a rubber cap, and observe and record the scale position of the front end of the piston in the syringe body before turning on the switch; after turning on the switch, adjust the speed to the airtightness inspection speed, and observe the change of the scale position of the front end of the piston in the syringe body: if the scale position of the front end of the piston changes, it means that the syringe body and the piston are not well sealed or the rubber cap plug has poor sealing performance. If the scale position of the front end of the piston does not change, it means that the sealing performance of the entire syringe is good; the device can quantify the leakage of the syringe through a quantitative ruler, and can compare the airtightness of different syringes.

Claims

1. A device for cleaning a syringe using air and inspecting the sealing performance of the syringe, characterized in that: The invention comprises a transmission mechanism, a control mechanism, one or more fixing mechanisms, and a base (14), wherein the control mechanism comprises a power adapter (1), a speed regulator (2), and a switch (3); the transmission mechanism comprises a motor (4), a connecting rod (5), a push rod (6), an inner rail fixing frame (7), a slide rail (8), a fixing seat II (12), and a push rod guide groove (13); the fixing mechanism comprises a fixing seat I (9), one or more syringe piston slots (10), and one or more syringe body slots (11); the power adapter (1) and the speed regulator (2) are arranged on the base (14); an external power supply is connected to the switch (3) through the power adapter (1); the switch (3) is connected to the motor (4) through the speed regulator (2); an output shaft of the motor (4) is connected to the connecting rod (5) through a driving rod (21). The inner rail of the slide rail (8) is connected to the inner rail fixing frame (7), the other end of the connecting rod (5) is connected to one end of the push rod (6), the other end of the push rod (6) passes through the push rod guide groove (13) and is connected to the inner rail fixing frame (7), the fixing seat II (12) is fixed to the base (14), the motor (4) and the push rod guide groove (13) are fixed to the fixing seat II (12), one end of the inner rail of more than one slide rail (8) is fixed to the inner rail fixing frame (7), and the other end is arranged in the outer rail of the slide rail (8) and cooperates with the outer rail to move along the outer rail, one end of the outer rail of the slide rail (8) is fixed to the fixing seat I (9), and the other end is fixed to the base (14), the syringe piston slot (10) is fixed to the outer rail (17) of the slide rail (8) and is located above the fixing seat I (9), and the syringe body slot (11) is fixed to the inner rail (16) of the slide rail (8); The device also includes a dust cover, which is arranged on the syringe body slot (11) and located above the connection between the syringe body and the piston; The device also includes a quantitative ruler, which is arranged on the base (14) and located on one side of the outer rail (17) of the slide rail (8).

Images