Injector auxiliary propelling device based on external power

Abstract

The invention discloses an injector auxiliary propelling device based on external power, and belongs to the technical field of gas chromatograph injector gas feeding devices.The injector auxiliary propelling device comprises an injector, a limiting component, a propelling component and a power component, and the limiting component comprises an L-shaped plate, an upper displacement limiting baffle, a fixed clamping plate and a lower displacement limiting baffle; the gas detection auxiliary device has the beneficial effects that the gas detection auxiliary device can be used for assisting the gas detection operation of the gas chromatograph, the power component of the gas detection auxiliary device is greatly simplified, the size of the whole auxiliary device is reduced, large-scale integrated use is facilitated, the stable propelling speed can be provided through the same external power source, and the gas detection auxiliary device is convenient to operate. Uniformity of gas detection operation is improved, and manual operation errors are reduced. Meanwhile, due to the simple structure and quick assembly and disassembly, the device is suitable for large-scale parallel use, and the labor time of experimenters is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of gas feeding devices for syringes of gas chromatographs, and particularly relates to a syringe auxiliary propulsion device based on external power. Background Art

[0002] During the process of measuring agricultural greenhouse gas emissions, a gas chromatograph is often used to analyze gases. Generally, an experimenter will push a syringe loaded with the collected gas into the gas chromatograph. During the detection experiment, it will consume a lot of time and energy of the experimenter.

[0003] Moreover, during the experiment, due to the difference in the gas pushing rate of the experimenter each time, the detection results may also have errors. Summary of the Invention

[0004] To solve the above problems, the present invention provides a syringe auxiliary propulsion device based on external power, and the present invention is implemented through the following technical solutions.

[0005] A syringe auxiliary propulsion device based on external power includes a syringe. The syringe includes a syringe barrel. The top of the syringe barrel is fixedly connected with a syringe head. A sleeve flange is integrally formed at the bottom of the outer wall of the syringe barrel. A piston is slidably connected in the syringe barrel. A propulsion rod is fixedly connected to the bottom of the piston. It further includes:

[0006] A limiting component. The limiting component includes an L-shaped plate, an upper displacement limiting baffle, a fixed clamping plate, and a lower displacement limiting baffle. The upper displacement limiting baffle is fixedly connected to the top of the L-shaped plate. The fixed clamping plate and the lower displacement limiting baffle are sequentially fixed below the upper displacement limiting baffle. A small opening is formed on the front side of the upper displacement limiting baffle. A groove is formed on the front side of the fixed clamping plate. A large opening is formed on the front side of the lower displacement limiting baffle;

[0007] A propulsion component. The propulsion component includes a propulsion plate and a threaded rod. A boss is fixedly connected to the bottom of the inner wall of the right side plate of the L-shaped plate. A pair of limiting rods are fixedly connected between the boss and the upper displacement limiting baffle. The propulsion plate is slidably connected to the limiting rods, and the propulsion plate is located below the lower displacement limiting baffle. The threaded rod is rotatably connected between the limiting rods. A power interface is fixedly connected to the top of the threaded rod. The propulsion plate is engaged with the threaded rod;

[0008] A power component. The power component is used to drive the power interface to rotate.

[0009] Preferably, the fixed clamping plate is an elastic plastic plate. The groove is arc-shaped. The diameter of the groove is the same as the diameter of the syringe barrel. The radian of the groove is greater than 180°.

[0010] Preferably, a chamfer is provided at the opening of the groove.

[0011] Preferably, the distance between the upper displacement limiting baffle and the fixed clamping plate is greater than the height of the injection barrel, and the difference between the distance between the upper displacement limiting baffle and the fixed clamping plate and the height of the injection barrel is 1-2 mm.

[0012] Preferably, the propulsion plate is provided with limiting holes, the limiting rods are slidably connected in the limiting holes, power screw holes are provided on the propulsion plate between the limiting holes, and the threaded rods are engaged in the power screw holes.

[0013] Preferably, the power interface is a regular hexagon, and the power component includes an external motor and an adapter. The adapter is fixed to the end of the output shaft of the external motor, and a docking port adapted to the power interface is provided at the bottom of the adapter.

[0014] Preferably, the adapter is detachably connected to the output shaft of the external motor via a fixing screw.

[0015] The beneficial effect of the present invention is that the present invention is an auxiliary propulsion device for gas chromatograph sample injection based on external power, which is used to assist the operation of gas chromatograph gas detection, greatly simplifies its power components, reduces the size of the overall auxiliary device, is convenient for large-scale integrated use, and can provide a stable propulsion rate through the same external power source, improves the uniformity of gas detection operation, and reduces human operation errors. At the same time, due to its streamlined structure and quick loading and unloading, the present invention is suitable for large-scale parallel use, which reduces the labor time of experimenters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 : An axonometric view of a syringe auxiliary propulsion device based on external power according to the present invention;

[0018] Figure 2 : A front view of a syringe auxiliary propulsion device based on external power according to the present invention;

[0019] Figure 3 : Axonometric view of the syringe after it is pushed forward;

[0020] Figure 4 : A top view of a syringe auxiliary propulsion device based on external power according to the present invention;

[0021] Figure 5: Top view of the propulsion plate of the present invention;

[0022] Figure 6 : Axonometric view of the fixed clamping plate of the present invention;

[0023] Figure 7 : Schematic diagram of the combined use of multiple auxiliary propulsion devices.

[0024] The reference numerals are as follows:

[0025] 1 - Syringe, 11 - Barrel, 12 - Injection head, 13 - Sleeve curl, 14 - Pushing rod, 21 - L-shaped plate, 22 - Upper displacement limiting baffle, 23 - Fixed clamping plate, 24 - Lower displacement limiting plate, 25 - Small opening, 26 - Groove, 27 - Large opening, 28 - Chamfer, 31 - Propulsion plate, 32 - Threaded rod, 33 - Boss, 34 - Limiting rod, 35 - Power interface, 36 - Limiting hole, 37 - Power screw hole, 41 - External motor, 42 - Adapter, 43 - Docking port, 44 - Fixing screw. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figure 1-7 shown, an external power-based syringe auxiliary propulsion device includes a syringe. The syringe includes a barrel. The top of the barrel is fixedly connected with an injection head. The bottom of the outer wall of the barrel is integrally formed with a sleeve curl. A piston is slidably connected in the barrel. The bottom of the piston is fixedly connected with a pushing rod. It further includes:

[0028] A limiting component, which includes an L-shaped plate, an upper displacement limiting baffle, a fixed clamping plate and a lower displacement limiting baffle. The upper displacement limiting baffle is fixedly connected to the top of the L-shaped plate. The fixed clamping plate and the lower displacement limiting baffle are sequentially fixed below the upper displacement limiting baffle. A small opening is provided on the front side of the upper displacement limiting baffle. A groove is provided on the front side of the fixed clamping plate. A large opening is provided on the front side of the lower displacement limiting baffle;

[0029] A propulsion component, which includes a propulsion plate and a threaded rod. The bottom of the inner wall of the right side plate of the L-shaped plate is fixedly connected with a boss. A pair of limiting rods are fixedly connected between the boss and the upper displacement limiting baffle. The propulsion plate is slidably connected to the limiting rods, and the propulsion plate is located below the lower displacement limiting baffle. The threaded rod is rotatably connected between the limiting rods. The top of the threaded rod is fixedly connected with a power interface. The propulsion plate is engaged with the threaded rod;

[0030] The power component is used to drive the power interface to rotate.

[0031] Furthermore, the fixed clamping plate is an elastic plastic plate, the groove is arc-shaped, the diameter of the groove is the same as the diameter of the syringe barrel, and the radian of the groove is greater than 180°.

[0032] Furthermore, a chamfer is provided at the opening of the groove.

[0033] Furthermore, the distance between the upper displacement limiting baffle and the fixed clamping plate is greater than the height of the syringe barrel, and the difference between the distance between the upper displacement limiting baffle and the fixed clamping plate and the height of the syringe barrel is 1-2 mm.

[0034] Furthermore, limiting holes are provided on the push plate, the limiting rods are slidably connected in the limiting holes, and power screw holes are provided on the push plate between the limiting holes, and the threaded rod is engaged in the power screw holes.

[0035] Furthermore, the power interface is a regular hexagon, the power component includes an external motor and an adapter, the adapter is fixed at the end of the output shaft of the external motor, and a mating interface adapted to the power interface is provided at the bottom of the adapter.

[0036] Furthermore, the adapter and the output shaft of the external motor are detachably connected by fixing screws.

[0037] A specific embodiment of the present invention is as follows:

[0038] First, install the syringe. As Figure 1 and Figure 6 shown, in the initial state, the push plate is at the lowest position. The syringe barrel of the syringe is squeezed into the groove. The opening of the groove is slightly smaller than the diameter of the syringe barrel. Since the fixed clamping plate is made of elastic plastic, the syringe barrel can be smoothly clamped into the groove and will not fall off automatically after being clamped.

[0039] The difference between the distance between the upper displacement limiting baffle and the fixed clamping plate and the height of the syringe barrel is 1-2 mm. The syringe barrel is located between the upper displacement limiting baffle and the fixed clamping plate. The injection head exposes from the small opening, the sleeve curl is located on the lower displacement limiting plate, and the push rod exposes from the large opening.

[0040] When the threaded rod rotates, it can drive the push plate to rise. When the push plate contacts the push rod, it can push the push rod upward. The push rod drives the piston in the syringe barrel to move, and the sample in the syringe is extruded.

[0041] Insert the mating interface into the power interface. When the external motor works, it can drive the adapter to rotate, thereby driving the threaded rod to rotate, and further realizing the extrusion of the sample. When extruding the sample from different syringes, since the rotation speed of the external motor is constant, the extrusion speed of the sample in different syringes can be ensured to be consistent.

[0042] As Figure 7 shown, the auxiliary propulsion devices of the present invention can be used in large batches in combination, and the sample extrusion of all syringes can be achieved by using one power component.

[0043] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An externally powered syringe auxiliary propulsion device, comprising a syringe, the syringe comprising a syringe barrel, an injection head is fixedly connected to the top of the syringe barrel, a sleeve curling edge is integrally formed at the bottom of the outer wall of the syringe barrel, a piston is slidably connected in the syringe barrel, a propulsion rod is fixedly connected to the bottom of the piston, and the characteristics are: Also includes: A limiting component, the limiting component includes an L-shaped plate, an upper displacement limiting baffle, a fixed clamping plate and a lower displacement limiting baffle, the upper displacement limiting baffle is fixed to the top of the L-shaped plate, the fixed clamping plate and the lower displacement limiting baffle are fixed in sequence below the upper displacement limiting baffle, a small opening is opened on the front side of the upper displacement limiting baffle, a groove is opened on the front side of the fixed clamping plate, and a large opening is opened on the front side of the lower displacement limiting baffle; A propulsion component, the propulsion component includes a propulsion plate and a threaded rod, a boss is fixedly connected to the bottom of the inner wall of the right side plate of the L-shaped plate, a pair of limit rods are fixedly connected between the boss and the upper displacement limit baffle, the propulsion plate is slidably connected to the limit rods, and the propulsion plate is located below the lower displacement limit baffle, the threaded rod is rotatably connected between the limit rods, a power interface is fixedly connected to the top of the threaded rod, and the propulsion plate is meshed with the threaded rod; A power component is used to drive the power interface to rotate.

2. The syringe auxiliary propulsion device based on external power according to claim 1, characterized in that: The fixed clamping plate is an elastic plastic plate, the groove is arc-shaped, the diameter of the groove is consistent with the diameter of the injection barrel, and the arc of the groove is greater than 180°.

3. The syringe auxiliary propulsion device based on external power according to claim 2, characterized in that: The opening of the groove is provided with a chamfer.

4. The syringe auxiliary propulsion device based on external power according to claim 1, characterized in that: The distance between the upper displacement limiting baffle and the fixed clamping plate is greater than the height of the injection barrel, and the difference between the distance between the upper displacement limiting baffle and the fixed clamping plate and the height of the injection barrel is 1-2 mm.

5. The syringe auxiliary propulsion device based on external power according to claim 1, characterized in that: The push plate is provided with limit holes, the limit rods are slidably connected in the limit holes, the push plate between the limit holes is provided with power screw holes, and the threaded rods are engaged in the power screw holes.

6. The syringe auxiliary propulsion device based on external power according to claim 1, characterized in that: The power interface is a regular hexagon, and the power component includes an external motor and an adapter. The adapter is fixed to the end of the output shaft of the external motor, and a docking port adapted to the power interface is provided at the bottom of the adapter.

7. The syringe auxiliary propulsion device based on external power according to claim 6, characterized in that: The adapter is detachably connected to the output shaft of the external motor via fixing screws.

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