Micro sample injector capable of amplifying scales

Abstract

The utility model discloses a microsyringe capable of amplifying scales, and belongs to the technical field of microsyringes. Comprising a sample injector body, the sample injector body comprises a sample injection cylinder and a push rod, the push rod is connected with the sample injection cylinder in an inserted and matched mode, the push rod is located in the sample injection cylinder and fixedly provided with a piston, the bottom end of the sample injection cylinder is fixedly communicated with a sample injection needle, and scale marks are arranged on the outer surface of the sample injection cylinder. The upper end of the sample introduction cylinder is detachably sleeved with a sleeve, the sleeve is provided with a rubber plug hole, the sleeve is sleeved with a connecting rod through a silica gel plug, an arc-shaped clamping sleeve at the bottom end of the connecting rod is used for installing a magnifying lens, sample introduction scale marks can be amplified through the magnifying lens, then accurate sample introduction can be achieved, and the sample introduction precision is improved. The magnifier can freely move along the silicon rubber case along with the connecting rod, and can be pushed to a scale-free area at the top end during sampling and sample injection, so that sampling and sample injection are not obstructed, and an operator can conveniently, accurately and quantitatively extract a sample.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of micro sample injectors, in particular to a micro sample injector with amplifiable scale. BACKGROUND

[0002] The micro sample injector is used for the sampling tool of gas chromatography analysis instruments and liquid chromatography analysis instruments, and has the characteristics of high sensitivity, small sampling amount and the like. The sampling liquid volume is in microliters, the length of the micro sample injector is fixed, and the distance between the scale lines arranged on the outer surface is extremely small. It is very difficult for an operator to accurately measure the sample by observing the scale. A single rail or a double rail is generally used to install a magnifying glass. In the prior art, the rail is arranged on one side or both sides of the micro sample injector. The rail cannot be separated from the scale area of the micro sample injector, and the sampling and sampling operations are increased. In view of the above, the application provides a micro sample injector with amplifiable scale. CONTENT OF THE INVENTION

[0003] 1. TECHNICAL PROBLEM TO BE SOLVED

[0004] The application aims to provide a micro sample injector with amplifiable scale, which solves the technical problems in the background art, realizes that the connecting rod is connected and installed on the sleeve by means of the silica gel plug, the magnifying glass is installed on the arc-shaped clamping sleeve at the bottom end of the connecting rod, the scale line of the micro sample injector can be amplified by the magnifying glass, accurate sampling can be realized, the magnifying glass can move freely along the connecting rod, the magnifying glass can be pushed to the top end without scale area during sampling and sampling, and the sampling and sampling do not cause obstacles, so that the operator can accurately measure the sample.

[0005] 2. TECHNICAL SCHEME

[0006] The application provides a micro sample injector with amplifiable scale, which comprises a micro sample injector body, the micro sample injector body comprises a sampling cylinder and a push rod, the push rod is connected and matched with the sampling cylinder in a plug-in manner, a piston is fixedly arranged in the push rod in the sampling cylinder, a sampling needle head is fixedly and communicatively arranged at the bottom end of the sampling cylinder, scale lines are arranged on the outer surface of the sampling cylinder, a sleeve is detachably and installed on the upper end of the sampling cylinder, a silica gel plug is elastically plugged into a plug hole in the sleeve, a connecting rod is connected and matched with the silica gel plug in a damping plug-in manner, an arc-shaped clamping sleeve is fixedly arranged at the bottom end of the connecting rod, and a magnifying glass is limitingly installed on the arc-shaped clamping sleeve.

[0007] By adopting the technical scheme, the sample injector body is sleeved with the installation sleeve in the non-scale area, the connecting rod is connected to the sleeve by the silica gel plug damping type plug-in connection, the bottom end of the connecting rod is limitedly installed with the magnifying glass through the arc-shaped clamping sleeve, so that the sample injector body can slide along the silica gel plug during sampling and sample injection, and the damping effect of the silica gel plug can automatically limit the connecting rod after movement, the magnifying glass is pushed away from the scale line area, the sample injection is not hindered, and the operation of sampling and sample injection is not hindered. After the sample needle is placed in the measured bath liquid and the push rod is repeatedly pushed and pulled to exhaust, the push rod is pulled to be above the scale line of the required volume of the piston, and then the magnifying glass is moved to the scale line position of the solution volume, so that the magnifying glass can accurately sample the liquid level scale line in the sample injection cylinder, and the technical problem that the operator cannot accurately observe the liquid level and accurately scale in the prior art is solved.

[0008] Optionally, the sample injection cylinder is internally provided with a solution cavity, and the piston is slidably arranged in the solution cavity.

[0009] By adopting the technical scheme, the push rod pushes the piston to move along the solution cavity in the sample injection cylinder, and sampling and sample injection operations can be realized.

[0010] Optionally, a barrel port and a screw hole are formed in the sleeve, a screw rod is threadedly installed at the screw hole of the sleeve, and the sleeve is sleeved outside the sample injection cylinder through the barrel port.

[0011] By adopting the technical scheme, the sleeve is sleeved outside the sample injection cylinder through the barrel port, and the sleeve is tightly sleeved with the sample injection cylinder by locking the screw rod.

[0012] Optionally, the barrel port comprises a circular hole and a rectangular through slot, and the circular hole and the rectangular through slot are communicatively arranged, and the screw hole is transversely arranged through the rectangular through slot.

[0013] By adopting the technical scheme, the rectangular through slot of the barrel port is elastically deformed by locking the screw rod, and the sleeve can clamp the sample injection cylinder.

[0014] Optionally, an anti-skid knob is fixedly arranged at the upper end of the connecting rod, an arc-shaped clamping groove is arranged on the arc-shaped clamping sleeve, and the arc-shaped clamping sleeve is threadedly fixedly connected with the magnifying glass.

[0015] By adopting the technical scheme, the upper end of the connecting rod is provided with the anti-skid knob, which is convenient for hand holding and moving along the silica gel plug, the screw is threadedly installed on the arc-shaped clamping sleeve, and the screw can limit the magnifying glass.

[0016] 3. Beneficial effects

[0017] One or more technical solutions provided in the technical scheme have at least the following technical effects or advantages:

[0018] 1. The injector uses a silicone plug to mount a connecting rod on the cannula, and uses an arc-shaped sleeve at the bottom of the connecting rod to mount a magnifying glass. The magnifying glass can magnify the injection scale lines, thus enabling precise injection.

[0019] 2. The magnifying glass can move freely along the silicone sleeve with the connecting rod. When sampling and injecting samples, the magnifying glass can be pushed to the top ungraded area, which does not obstruct sampling and injection, and makes it convenient for operators to accurately extract samples quantitatively. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a microsyringe with magnifiable scale disclosed in a preferred embodiment of this application;

[0021] Figure 2 This is a schematic cross-sectional view of the injector body of a micro-injector with magnifiable scale disclosed in a preferred embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the cannula, connecting rod, and magnifying glass structure of a microsyringe with magnifiable scale disclosed in a preferred embodiment of this application;

[0023] The following are the labels in the diagram: 1. Injector body; 11. Injection tube; 111. Scale line; 112. Solution chamber; 12. Push rod; 121. Piston; 13. Injection needle; 2. Sleeve; 21. Tube opening; 22. Screw hole; 23. Rubber stopper hole; 24. Screw; 3. Silicone stopper; 4. Connecting rod; 41. Anti-slip twist; 42. Arc-shaped ferrule; 5. Magnifying glass. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figures 1 to 3This application provides a micro-syringe with magnifiable scale, comprising: a syringe body 1, which includes a syringe barrel 11 and a push rod 12. The push rod 12 is inserted into and connected to the syringe barrel 11. A piston 121 is fixedly installed inside the syringe barrel 11. A syringe needle 13 is fixedly connected to the bottom end of the syringe barrel 11. The syringe barrel 11 has scale lines 111 on its outer surface. A sleeve 2 is detachably fitted onto the upper end of the syringe barrel 11. A rubber stopper hole 23 is opened on the sleeve 2. A silicone stopper 3 is elastically inserted into the sleeve 2 at the rubber stopper hole 23. A connecting rod 4 is connected to the silicone stopper 3 in a damped insertion manner. An arc-shaped retainer 42 is fixedly installed at the bottom end of the connecting rod 4. A magnifying glass 5 is installed at the upper limit of the arc-shaped retainer 42. The syringe body 1 is equipped with a sleeve 2 that is limited in the non-scale area, and a connecting rod 4 is connected to the sleeve 2 in a damped insertion manner using a silicone stopper 3. The connecting rod 4 has a magnifying glass 5 mounted on its bottom end via an arc-shaped retainer 42. During sampling and injection, the sampler body 1 can slide freely along the silicone stopper 3 using the connecting rod 4. The damping effect of the silicone stopper 3 allows the connecting rod 4 to automatically limit its movement, pushing the magnifying glass 5 away from the area marked by the scale line 111. This ensures unobstructed injection and prevents any obstacles to sampling and injection operations. After repeatedly pushing and pulling the push rod 12 to expel air from the sample injection needle 13 in the test solution, the push rod 12 is pulled up to the piston 121 above the scale line 111 indicating the required volume. The magnifying glass 5 is then moved to the position of the solution volume scale line 111. This allows for precise injection of the liquid level scale line 111 into the sample tube 11, solving the technical problem in existing technologies where operators cannot accurately observe the liquid level and make precise calibrations.

[0026] Reference Figure 1 and Figure 2 The sample injection cylinder 11 has a solution chamber 112 inside, and the piston 121 is slidably disposed in the solution chamber 112. The push rod 12 pushes the piston 121 to move along the solution chamber 112 inside the sample injection cylinder 11, which can realize the sampling and injection operations.

[0027] Reference Figure 1 and Figure 3 The sleeve 2 has a cylindrical opening 21 and a screw hole 22. A screw 24 is threadedly installed on the sleeve 2 at the screw hole 22. The sleeve 2 is sleeved on the outside of the sample injection cylinder 11 through the cylindrical opening 21. The sleeve 2 is sleeved on the outside of the sample injection cylinder 11 through the cylindrical opening 21, and the sleeve 2 is tightly sleeved on the sample injection cylinder 11 by locking the screw 24.

[0028] Reference Figure 1 and Figure 3 The cylinder opening 21 includes a round hole and a rectangular through slot, and the round hole and the rectangular through slot are connected. The screw hole 22 is set to pass through the rectangular through slot laterally. By tightening the screw 24, the rectangular through slot of the cylinder opening 21 is elastically deformed, which can form the effect of the sleeve 2 clamping the sample cylinder 11.

[0029] Reference Figure 1 and Figure 3 The upper end of the connecting rod 4 is fixed with an anti-slip twist 41, and the arc-shaped sleeve 42 is provided with an arc-shaped groove. The arc-shaped sleeve 42 is fixedly connected to the magnifying glass 5 by screw threads. The upper end of the connecting rod 4 is provided with an anti-slip twist 41 for easy hand gripping and use, and for easy movement of the connecting rod 4 along the silicone plug 3. The arc-shaped sleeve 42 is threaded with screws, which can be used to limit and fix the magnifying glass 5.

[0030] Working principle: The injector body 1 is fitted with a sleeve 2 that limits its movement in the unscaled area. A connecting rod 4 is connected to the sleeve 2 via a silicone plug 3 using a damping connection. A magnifying glass 5 is mounted on the bottom of the connecting rod 4 via an arc-shaped retainer 42. During sampling and injection, the injector body 1 can slide freely along the silicone plug 3 using the connecting rod 4. The damping effect of the silicone plug 3 automatically limits the movement of the connecting rod 4. Specifically, the magnifying glass 5 is pushed away from the scale line 111 area via the connecting rod 4, ensuring unobstructed sample injection without hindering the sampling and injection process. The injection needle 13 is placed in the test solution, and the push rod is repeatedly pushed and pulled. 12. The solution chamber 112 inside the sample injection cylinder 11 is cleaned and coated. The injection needle 13 is placed in the bath liquid to be tested and the push rod 12 is repeatedly pushed and pulled to vent the air. The push rod 12 is then pulled up to the piston 121 above the scale line 111 of the required volume. The magnifying glass 5 is then moved to the position of the scale line 111 of the solution volume. The magnifying glass 5 can be used to accurately measure the liquid level scale line 111 inside the sample injection cylinder 11, solving the technical problem in the prior art that the operator cannot accurately observe the liquid level height and it is difficult to accurately measure the scale. The magnifying glass 5 is then pushed out of the scale area to remove the obstruction. Finally, the injection needle 13 is inserted into the injection port, and the push rod 12 pushes the piston 121 to the bottom of the sample injection cylinder 11 to complete the injection operation.

Claims

1. A micro-syringe with magnifiable scale, characterized in that: The device includes: a sample injector body (1), which includes a sample injector tube (11) and a push rod (12). The push rod (12) is inserted into the sample injector tube (11) and connected to it. A piston (121) is fixedly installed inside the sample injector tube (11) on the push rod (12). A sample injector needle (13) is fixedly connected to the bottom end of the sample injector tube (11). The sample injector tube (11) has scale lines (111) on its outer surface. A sleeve (2) is detachably installed at the upper end of the sample injector tube (11). A rubber stopper hole (23) is opened on the sleeve (2). A silicone stopper (3) is elastically inserted into the sleeve (2) at the rubber stopper hole (23). A connecting rod (4) is connected to the silicone stopper (3) in a damped insertion manner. An arc-shaped ferrule (42) is fixedly installed at the bottom end of the connecting rod (4). A magnifying glass (5) is installed at the upper limit of the arc-shaped ferrule (42).

2. The micro-syringe with magnifiable scale according to claim 1, characterized in that: The sample injection tube (11) has a solution chamber (112) inside, and the piston (121) is slidably disposed in the solution chamber (112).

3. The micro-syringe with magnifiable scale according to claim 1, characterized in that: The sleeve (2) has a cylindrical opening (21) and a screw hole (22). A screw (24) is threadedly installed on the sleeve (2) at the screw hole (22). The sleeve (2) is sleeved on the outside of the sample injection cylinder (11) through the cylindrical opening (21).

4. A micro-syringe with magnifiable scale according to claim 3, characterized in that: The cylinder opening (21) includes a round hole and a rectangular through slot, and the round hole and the rectangular through slot are connected. The screw hole (22) is arranged to pass through the rectangular through slot laterally.

5. A micro-syringe with magnifiable scale according to claim 1, characterized in that: The upper end of the connecting rod (4) is fixedly provided with an anti-slip twist (41), the arc-shaped sleeve (42) is provided with an arc-shaped slot, and the arc-shaped sleeve (42) is fixedly connected to the magnifying glass (5) by screw thread.

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