Oil chromatography gas sample injector

Abstract

The utility model discloses an oil chromatography gas sample injector which comprises an injector body, an injection core body is arranged on the inner side of the injector body, a piston head is arranged at one end of the injection core body, a push block is arranged at the other end of the injection core body, and a transparent protective cover is arranged on the outer side of the injector body. A transparent protective cover is arranged on the outer side of the injector body, the injector body is effectively prevented from being damaged by mistake, a sealing rubber sleeve is arranged on the outer side of a needle connecting cylinder in a sleeving mode, and a needle tip sealing bin arranged at the bottom end of the sealing rubber sleeve can be conveniently and rapidly moved to a needle tip opening of the needle body to be sealed after a person extracts a to-be-detected gas sample. A gas sample on the inner side of the injector main body is effectively prevented from running out to influence the experiment accuracy, an experimenter rotates a threaded rotating rod after extracting the gas sample to enable a movable arc-shaped clamping block and a fixed arc-shaped clamping block to clamp the injection core main body, and the phenomenon that the experimenter manually presses a push block arranged at one end of the injection core main body to cause reading errors to influence the experiment result is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of injectors, in particular to an oil chromatogram gas sample injector. Background Art

[0002] The oil chromatography experiment is an operation process of injecting the measured gas sample separated from the insulating oil into the gas chromatograph. However, the extraction process of the measured gas sample separated from the insulating oil is cumbersome. The flexible application of the gas sample injector by the experimenter is directly related to the accuracy of the oil chromatography experiment results.

[0003] For example, the utility model with authorization announcement number CN210982354U discloses an oil chromatography gas sample injector, which realizes the function of automatically injecting the gas sample tested in the oil chromatography experiment into the chromatograph, thereby avoiding manual sampling operation errors in the oil chromatography to the greatest extent and reducing the error of the oil chromatography experiment.

[0004] This prior art also has the following problems when used: after sampling, the experimenter needs to quickly read the gas sample in the injector, and then inject the gas sample to be tested into the chromatograph for testing to reduce the occurrence of gas leakage from the needle tip. In addition, the experimenter's hand holding the injection core cannot be moved during the movement, which increases the difficulty of the experiment. For this reason, we propose an oil chromatograph gas sample injector. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an oil chromatogram gas sample injector, wherein a transparent protective cover is arranged on the outside of the injector body, effectively preventing the injector body from being accidentally dropped and damaged, and a sealing rubber sleeve is sleeved on the outside of the needle connecting tube, so that personnel can quickly move the needle tip sealing chamber arranged at the bottom end of the sealing rubber sleeve to the needle tip opening of the needle body for sealing after extracting the gas sample to be tested, effectively preventing the gas sample inside the injector body from escaping and affecting the accuracy of the experiment. After the experimenter extracts the gas sample, the threaded rotating rod is rotated so that the movable arc clamping block and the fixed arc clamping block clamp the injection core body, effectively preventing the reading error caused by the experimenter manually pressing the push block arranged at one end of the injection core body from affecting the experimental results.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an oil chromatogram gas sample injector, comprising an injector body, an injection core body is arranged inside the injector body, a piston head is arranged at one end of the injection core body, a push block is arranged at the other end of the injection core body, a transparent protective cover is arranged on the outside of the injector body, first connecting blocks are arranged on both sides of the transparent protective cover, a threaded column is arranged on the top surface of the first connecting block, a U-shaped support frame is arranged on the top surface of the injector body, and second connecting blocks are arranged on both sides of the bottom surface of the U-shaped support frame, a circular hole is opened on the surface of the second connecting block, one end of the threaded column passes through the circular hole and extends to the surface outside the second connecting block, a locking nut is sleeved, a needle connecting cylinder is arranged at the bottom end of the injector body, a card block is arranged on the outer surface of the needle connecting cylinder, a sealing rubber sleeve is sleeved on the surface of the card block, a card groove is opened on the inner wall of the top end of the sealing rubber sleeve, the card block is located inside the card groove, a needle tip sealing chamber is arranged on the inner side of the bottom end of the sealing rubber sleeve, and sealing elastic rubber sheets are arranged at both ends of the needle tip sealing chamber.

[0007] As a preferred technical solution of the utility model, a support plate is provided on the inner side of the U-shaped support frame, a through hole is provided at the center of the support plate, a fixed arc clamp is provided on the inner side of the through hole, a movable arc clamp symmetrical to the fixed arc clamp is provided on the inner side of the through hole, the injection core body is located between the movable arc clamp and the fixed arc clamp, a groove is provided on the outer surface of the movable arc clamp, a threaded turning rod is provided on the inner side of the groove, a threaded hole is provided on the surface of one side of the support plate, the threaded hole is connected with the through hole, and the threaded turning rod extends through the thread to the outside of the support plate.

[0008] As a preferred technical solution of the present utility model, an elliptical stopper is arranged on the inner side of the top end of the U-shaped support frame.

[0009] As a preferred technical solution of the present utility model, the bottom end of the first connecting block is fixedly connected to the top surface of the transparent protective cover, the bottom end of the U-shaped support frame is fixedly connected to the top surface of the second connecting block, and the positions of the first connecting block and the second connecting block are symmetrical.

[0010] As a preferred technical solution of the utility model, two L-shaped rubber gaskets are symmetrically sleeved on the surface of the threaded column.

[0011] As a preferred technical solution of the utility model, four clamping blocks are arranged on the outer surface of the needle connecting tube, and four clamping grooves are opened on the inner wall of the sealing rubber sleeve, and the four clamping blocks and the four clamping grooves are symmetrically positioned.

[0012] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0013] 1. A transparent protective cover is provided on the outside of the injector body to effectively prevent the injector body from being accidentally dropped and damaged. A sealing rubber sleeve is provided on the outside of the needle connecting tube to facilitate personnel to quickly move the needle tip sealing chamber provided at the bottom of the sealing rubber sleeve to the needle tip opening of the needle body for sealing after extracting the gas sample to be tested, effectively preventing the gas sample inside the injector body from escaping and affecting the accuracy of the experiment. After the experimenter extracts the gas sample, he rotates the threaded rotating rod to clamp the injection core body with the movable arc clamp block and the fixed arc clamp block, effectively preventing the experimenter from manually pressing the push block provided at one end of the injection core body, causing the reading error to affect the experimental results.

[0014] 2. By setting an elliptical stopper on the inner side of the top of the U-shaped support frame, the piston head can be effectively prevented from slipping out of the inner side of the injector body and causing damage to the injection core body; by the combination of the first connecting block and the second connecting block, the transparent protective cover and the U-shaped support frame can be easily installed and fixed on the outer side of the injector body; by the combination of four clamping blocks and four clamping grooves, the sealing rubber sleeve can be firmly mounted on the outer surface of the needle connecting tube to prevent the sealing rubber sleeve from falling off and being lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the sealing rubber sleeve of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the locking ring of the utility model from top view;

[0018] Figure 4 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Wherein: 1. injector body; 2. injection core body; 3. piston head; 4. push block; 5. needle body; 6. transparent protective cover; 7. U-shaped support frame; 8. needle connecting tube; 9. elliptical stopper; 10. first connecting block; 11. second connecting block; 12. threaded column; 13. L-shaped rubber gasket; 14. support plate; 15. sealing rubber sleeve; 16. clamping block; 17. clamping groove; 18. movable arc clamping block; 19. fixed arc clamping block; 20. threaded rotating rod; 21. sealing elastic rubber sheet; 22. needle tip sealing chamber. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0021] Example

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the utility model provides an oil chromatogram gas sample injector, including an injector body 1, an injector core body 2 is arranged inside the injector body 1, a piston head 3 is arranged at one end of the injector core body 2, a push block 4 is arranged at the other end of the injector core body 2, a transparent protective cover 6 is arranged outside the injector body 1, first connecting blocks 10 are arranged on both sides of the transparent protective cover 6, a threaded column 12 is arranged on the top surface of the first connecting block 10, a U-shaped support frame 7 is arranged on the top surface of the injector body 1, and second connecting blocks 10 are arranged on both sides of the bottom surface of the U-shaped support frame 7. A connecting block 11, a circular hole is provided on the surface of the second connecting block 11, one end of the threaded column 12 passes through the circular hole and extends to the surface outside the second connecting block 11 and is sleeved with a locking nut, a needle connecting tube 8 is provided at the bottom end of the injector body 1, a clamping block 16 is provided on the outer surface of the needle connecting tube 8, a sealing rubber sleeve 15 is sleeved on the surface of the clamping block 16, a clamping groove 17 is provided on the inner wall of the top end of the sealing rubber sleeve 15, the clamping block 16 is located on the inner side of the clamping groove 17, a needle tip sealing chamber 22 is provided on the inner side of the bottom end of the sealing rubber sleeve 15, and sealing elastic rubber sheets 21 are provided at both ends of the needle tip sealing chamber 22.

[0023] By arranging a transparent protective cover 6 on the outside of the injector body 1, the injector body 1 can be effectively prevented from being accidentally dropped and damaged. By matching the transparent protective cover 6, the U-shaped support frame 7, the first connecting block 10, the second connecting block 11, and the threaded column 12, the transparent protective cover 6 is firmly installed on the outside of the injector body 1. By arranging a sealing rubber sleeve 15 on the outside of the needle connecting tube 8, it is convenient for personnel to quickly move the needle tip sealing chamber 22 arranged at the bottom end of the sealing rubber sleeve 15 to the needle tip mouth of the needle body 5 for sealing after extracting the gas sample to be tested, thereby effectively preventing the gas sample inside the injector body 1 from escaping and affecting the accuracy of the experiment.

[0024] like Figure 3As shown, a support plate 14 is provided on the inner side of the U-shaped support frame 7, a through hole is provided at the center of the support plate 14, a fixed arc clamp block 19 is provided on the inner side of the through hole, a movable arc clamp block 18 symmetrical to the fixed arc clamp block 19 is provided on the inner side of the through hole, the injection core body 2 is located between the movable arc clamp block 18 and the fixed arc clamp block 19, a groove is provided on the outer surface of the movable arc clamp block 18, a threaded rotating rod 20 is provided on the inner side of the groove, a threaded hole is provided on the surface of one side of the support plate 14, the threaded hole is connected with the through hole, and the threaded rotating rod 20 extends through the thread to the outer side of the support plate 14; through the matching arrangement of the support plate 14, the movable arc clamp block 18, the fixed arc clamp block 19, and the threaded rotating rod 20, the experimenter extracts the gas sample and then rotates the threaded rotating rod 20 to clamp the movable arc clamp block 18 and the fixed arc clamp block 19 to clamp the injection core body 2, effectively avoiding the reading error caused by the experimenter manually pressing the push block 4 set at one end of the injection core body 2 to affect the experimental results.

[0025] like Figure 1 As shown, an elliptical stopper 9 is provided on the inner side of the top end of the U-shaped support frame 7; by providing the elliptical stopper 9 on the inner side of the top end of the U-shaped support frame 7, it is effectively prevented that the piston head 3 escapes from the inner side of the injector body 1 and causes damage to the injection core body 2.

[0026] like Figure 1 As shown, the bottom end of the first connecting block 10 is fixedly connected to the top surface of the transparent protective cover 6, the bottom end of the U-shaped support frame 7 is fixedly connected to the top surface of the second connecting block 11, and the positions of the first connecting block 10 and the second connecting block 11 are symmetrical; through the matching arrangement of the first connecting block 10 and the second connecting block 11, it is convenient to install and fix the transparent protective cover 6 and the U-shaped support frame 7 on the outside of the injector body 1.

[0027] like Figure 1 As shown, two L-shaped rubber gaskets 13 are symmetrically sleeved on the surface of the threaded column 12; by symmetrically sleeved on the surface of the threaded column 12, the handle clamping damage of the injector body 1 is effectively avoided during the locking process of the threaded column 12 and the locking nut.

[0028] like Figure 2 As shown, four blocks 16 are provided on the outer surface of the needle connecting tube 8, and four slots 17 are provided on the inner wall of the sealing rubber sleeve 15. The four blocks 16 and the four slots 17 are symmetrically positioned. By matching the four blocks 16 and the four slots 17, the sealing rubber sleeve 15 is firmly sleeved on the outer surface of the needle connecting tube 8 to prevent the sealing rubber sleeve 15 from falling off and being lost.

[0029] Specific working principle:

[0030] After extracting the gas sample to be tested, the experimenter quickly moves the needle tip sealing chamber 22 set at the bottom end of the sealing rubber sleeve 15 to the needle tip of the needle body 5 for sealing. When the gas sample to be tested is to be injected into the chromatograph, it is only necessary to move the sealing rubber sleeve 15 toward the needle connecting tube 8, and the needle tip of the needle body 5 is inserted into the gas inlet of the chromatograph. At this time, the threaded rotating rod 20 is rotated to loosen the movable arc clamping block 18, and the push block 4 is quickly pressed to allow all the gas samples inside the injector body 1 to enter the chromatograph for testing.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An oil chromatography gas sample injector, comprising an injector body (1), Features: An injection core body (2) is arranged inside the injector body (1), a piston head (3) is arranged at one end of the injection core body (2), a push block (4) is arranged at the other end of the injection core body (2), a transparent protective cover (6) is arranged outside the injector body (1), first connecting blocks (10) are arranged on both side surfaces of the transparent protective cover (6), a threaded column (12) is arranged on the top surface of the first connecting block (10), a U-shaped support frame (7) is arranged on the top surface of the injector body (1), second connecting blocks (11) are arranged on both side surfaces of the bottom end of the U-shaped support frame (7), and the second connecting blocks (11) are arranged on the surface of the second connecting block (11). A circular hole is provided on the surface, one end of the threaded column (12) passes through the circular hole and extends to the surface outside the second connecting block (11) and is sleeved with a locking nut. A needle connecting tube (8) is provided at the bottom end of the injector body (1), a clamping block (16) is provided on the outer surface of the needle connecting tube (8), a sealing rubber sleeve (15) is sleeved on the surface of the clamping block (16), a clamping groove (17) is provided on the inner wall of the top end of the sealing rubber sleeve (15), the clamping block (16) is located inside the clamping groove (17), a needle tip sealing chamber (22) is provided on the inner side of the bottom end of the sealing rubber sleeve (15), and sealing elastic rubber sheets (21) are provided at both ends of the needle tip sealing chamber (22).

2. An oil chromatography gas sample injector according to claim 1, Features: A support plate (14) is arranged on the inner side of the U-shaped support frame (7), a through hole is provided at the center of the support plate (14), a fixed arc-shaped clamping block (19) is arranged on the inner side of the through hole, a movable arc-shaped clamping block (18) symmetrical to the fixed arc-shaped clamping block (19) is arranged on the inner side of the through hole, the injection core body (2) is located between the movable arc-shaped clamping block (18) and the fixed arc-shaped clamping block (19), a groove is provided on the outer surface of the movable arc-shaped clamping block (18), a threaded rotating rod (20) is arranged on the inner side of the groove, a threaded hole is provided on one side surface of the support plate (14), the threaded hole is connected to the through hole, and the threaded rotating rod (20) extends through the thread to the outer side of the support plate (14).

3. An oil chromatography gas sample injector according to claim 1, Features: An elliptical stopper (9) is arranged on the inner side of the top end of the U-shaped support frame (7).

4. An oil chromatography gas sample injector according to claim 1, Features: The bottom end of the first connection block (10) is fixedly connected to the top surface of the transparent protective cover (6), the bottom end of the U-shaped support frame (7) is fixedly connected to the top surface of the second connection block (11), and the positions of the first connection block (10) and the second connection block (11) are symmetrical.

5. An oil chromatography gas sample injector according to claim 1, Features: Two L-shaped rubber gaskets (13) are symmetrically sleeved on the surface of the threaded column (12).

6. An oil chromatography gas sample injector according to claim 1, Features: The outer surface of the needle connecting tube (8) is provided with four clamping blocks (16), and the inner wall of the sealing rubber sleeve (15) is provided with four clamping grooves (17). The four clamping blocks (16) and the four clamping grooves (17) are symmetrically located.

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