CN210834799U

CN210834799U - Thin-layer chromatography sample application needle

Info

Publication number: CN210834799U
Application number: CN201921857513.9U
Authority: CN
Inventors: 舒仁强; 叶道方; 叶友平
Original assignee: Shenzhen Hongyitong Precision Technology Co ltd
Current assignee: Shenzhen Hongyitong Precision Technology Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-06-23
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a thin-layer chromatography sample application needle, including the piston barrel, the upper end of piston barrel is provided with fixed handle, the inside of piston barrel is provided with the solution chamber, the inside in solution chamber is provided with the piston rod, and the end of piston rod is provided with the piston handle, the piston rod cooperatees through the inner wall of rubber buffer and piston barrel, the inner wall of piston barrel is located and is provided with stop device near fixed handle department, the bottom of piston barrel is provided with the inlet, be provided with the syringe needle on the inlet, the inside of syringe needle is provided with adjusting device. A thin layer chromatography application of sample needle, can carry on the rubber buffer spacingly through stop device, avoid extracting the piston rod from the piston cylinder and lead to solution to spill, can cushion through expanding spring simultaneously, can be through rotating knob control hole and then adjusting the diameter of drawing the mouth, still with the speed of control extraction, can be used for the piston cylinder of different diameters, the suitability is better.

Description

Thin-layer chromatography sample application needle

Technical Field

The utility model relates to a chromatograph part field, in particular to thin-layer chromatography sample application needle.

Background

The chromatograph is a device for chromatographic separation and analysis, and modern chromatographs have the characteristics of high stability, sensitivity, versatility, high automation degree and the like, are widely used for analyzing certain contents of chemical products and high polymer materials, can also measure the molecular weight and the distribution of the high polymer materials through gel chromatography, and can sample samples through a sample application needle in the chromatograph so as to analyze the samples. However, when the existing sample application needle is used, the needle head cannot change the extraction speed according to the size of the piston cylinder, the needle head is poor in applicability, and the volume of a solution required to be extracted by the sample application needle is certain, so that the piston rod is easily pulled out when the piston cylinder is fully extracted, the solution is spilled, and the solution is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a thin layer chromatography sample application needle can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a thin-layer chromatography application of sample needle, includes the piston barrel, the upper end of piston barrel is provided with fixed handle, the inside of piston barrel is provided with the solution chamber, the inside in solution chamber is provided with the piston rod, and the end of piston rod is provided with the piston handle, the piston rod cooperatees through the inner wall of rubber buffer with the piston barrel, the inner wall of piston barrel is located to be close to fixed handle department and is provided with stop device, the bottom of piston barrel is provided with the inlet, be provided with the syringe needle on the inlet, the inside of syringe needle is provided with adjusting device.

Preferably, the limiting device comprises a plug, a clamping groove, a moving block, a moving cavity and a telescopic spring, the plug is arranged in the piston cylinder and fixed to the fixing handle through a screw, the clamping groove and the moving cavity are arranged in the plug, the moving block is arranged in the moving cavity and moves along the clamping groove and the moving cavity, a blocking column is arranged on the moving block, and the telescopic spring is arranged above the moving block in the moving cavity.

Preferably, adjusting device includes control hole, pinhole, fixed block, first bevel gear, knob, second bevel gear and fixed axle, the inside of syringe needle is provided with the fixed block, the inside of fixed block is provided with the pinhole, be provided with the knob on the fixed block, and the knob runs through the syringe needle, the inside of fixed block is located and is provided with first bevel gear on the knob, first bevel gear meshes with second bevel gear mutually, be provided with the fixed axle on the second bevel gear, be provided with the control hole on the second bevel gear, and the control hole is the different hole of four diameters, the control hole is to aligning with the axis of pinhole.

Preferably, the surface of the piston cylinder is provided with scale marks.

Preferably, a needle shield is arranged on the piston cylinder and at the position corresponding to the needle head, and a reserved groove matched with the adjusting device is arranged on the needle shield.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, be provided with stop device, can carry on the rubber buffer spacingly through stop device, avoid extracting the piston rod from the piston cylinder and lead to solution to spill, can cushion through expanding spring simultaneously, be provided with adjusting device, can be through rotating knob control hole and then adjusting the diameter of drawing the mouth, still with the speed of control extraction, can be used for the piston cylinder of different diameters, the suitability is better.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a thin-layer chromatography sample application needle of the present invention;

FIG. 2 is a schematic view of the interior of a thin layer chromatography sample application needle of the present invention;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a schematic view of a control hole of a thin layer chromatography sample application needle of the present invention;

fig. 5 is an enlarged view of fig. 2 at B.

In the figure: 1. a piston handle; 2. a fixed handle; 3. a piston cylinder; 4. scale lines; 5. a needle shield; 6. a piston rod; 7. a limiting device; 701. a plug; 702. a card slot; 703. a moving block; 704. a moving chamber; 705. a tension spring; 706. a bumping post; 8. an adjustment device; 801. a control hole; 802. a pinhole; 803. a fixed block; 804. a first bevel gear; 805. a knob; 806. a second bevel gear; 807. a fixed shaft; 9. a needle head; 10. a liquid inlet; 11. a solution chamber; 12. and a rubber plug.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, a thin-layer chromatography sample application needle comprises a piston cylinder 3, wherein a fixed handle 2 is arranged at the upper end of the piston cylinder 3, a solution chamber 11 is arranged inside the piston cylinder 3, a piston rod 6 is arranged inside the solution chamber 11, a piston handle 1 is arranged at the tail end of the piston rod 6, the piston rod 6 is matched with the inner wall of the piston cylinder 3 through a rubber plug 12, a limiting device 7 is arranged at a position, close to the fixed handle 2, on the inner wall of the piston cylinder 3, a liquid inlet 10 is arranged at the bottom end of the piston cylinder 3, a needle head 9 is arranged on the liquid inlet 10, and an adjusting device 8 is arranged inside;

the limiting device 7 comprises a plug 701, a clamping groove 702, a moving block 703, a moving cavity 704 and a telescopic spring 705, the plug 701 is arranged in the piston cylinder 3, the plug 701 is fixed with the fixing handle 2 through a screw, the clamping groove 702 and the moving cavity 704 are arranged in the plug 701, the moving block 703 is arranged in the moving cavity 704, the moving block 703 moves along the clamping groove 702 and the moving cavity 704, a blocking column 706 is arranged on the moving block 703, and the telescopic spring 705 is arranged in the moving cavity 704 and above the moving block 703; the adjusting device 8 comprises a control hole 801, a pinhole 802, a fixed block 803, a first bevel gear 804, a knob 805, a second bevel gear 806 and a fixed shaft 807, the fixed block 803 is arranged inside the needle 9, the pinhole 802 is arranged inside the fixed block 803, the knob 805 is arranged on the fixed block 803, the knob 805 penetrates through the needle 9, the first bevel gear 804 is arranged on the knob 805 inside the fixed block 803, the first bevel gear 804 is meshed with the second bevel gear 806, the fixed shaft 807 is arranged on the second bevel gear 806, the control hole 801 is arranged on the second bevel gear 806, the control holes 801 are four holes with different diameters, and the control holes 801 are aligned with the axis of the pinhole 802; the surface of the piston cylinder 3 is provided with scale marks 4; a needle shield 5 is arranged on the piston cylinder 3 at the position corresponding to the needle head 9, and a reserved groove matched with the adjusting device 8 is arranged on the needle shield 5.

It should be noted that, the utility model relates to a thin layer chromatography sample application needle, when in use, the needle shield 5 sleeved on the needle head 9 is taken out, then the knob 805 of the adjusting device 8 is rotated, so that the knob 805 drives the first bevel gear 804 in the fixing block 803 to rotate, because the first bevel gear 804 is meshed with the second bevel gear 806, the second bevel gear 806 is rotated around the fixing shaft 807, so that the control hole 801 in the second bevel gear 806 is communicated with the liquid inlet 10 and the needle hole 802, at this time, the needle head 9 is communicated with the liquid inlet 10, then the liquid inlet 10 is put into a sample, at this time, the rubber plug 12 is moved along the inner wall of the piston cylinder 3 by pulling the piston handle 1, the scale mark 4 on the piston cylinder 3 is observed, at this time, the sample is drawn into the solution cavity 11 from the liquid inlet 10, when the sample is moved to the maximum capacity, at this time, the piston, the moving block 703 is clamped inside the clamping groove 702, so that the blocking column 706 pushes the moving block 703, and the moving block 703 compresses the expansion spring 705 and moves along the clamping groove 702 and the moving cavity 704, so that the piston rod 6 cannot be pulled out of the rubber plug 12 due to over-violent pulling, a sample is spilled, after the sample is taken out, the inside of the sample needs to be cleaned, at the moment, the plug 701 and the screw on the fixed handle 2 are taken out, the piston rod 6 is cleaned after being pulled out of the piston cylinder 3, different extraction or injection speeds need to be adopted for different piston cylinders 3, the diameter of the control hole 801 can be controlled by rotating the knob 805, a more appropriate caliber is obtained, convenience is achieved, and finally the reserved groove on the needle shield 5 is aligned with the knob 805 and then clamped with the needle 9.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A thin layer chromatography sample application needle is characterized in that: including piston cylinder (3), the upper end of piston cylinder (3) is provided with fixed handle (2), the inside of piston cylinder (3) is provided with solution chamber (11), the inside of solution chamber (11) is provided with piston rod (6), and the end of piston rod (6) is provided with piston handle (1), piston rod (6) cooperatees with the inner wall of piston cylinder (3) through rubber buffer (12), the inner wall of piston cylinder (3) is located to be close to fixed handle (2) and locates to be provided with stop device (7), the bottom of piston cylinder (3) is provided with inlet (10), be provided with syringe needle (9) on inlet (10), the inside of syringe needle (9) is provided with adjusting device (8).

2. A thin layer chromatography deposition needle as claimed in claim 1, wherein: the limiting device (7) comprises a plug (701), a clamping groove (702), a moving block (703), a moving cavity (704) and a telescopic spring (705), the plug (701) is arranged inside the piston cylinder (3), the plug (701) is fixed with the fixed handle (2) through a screw, the clamping groove (702) and the moving cavity (704) are arranged inside the plug (701), the moving block (703) is arranged inside the moving cavity (704), the moving block (703) moves along the clamping groove (702) and the moving cavity (704), a blocking column (706) is arranged on the moving block (703), and the telescopic spring (705) is arranged above the moving block (703) in the moving cavity (704).

3. A thin layer chromatography deposition needle as claimed in claim 1, wherein: the adjusting device (8) comprises a control hole (801), a pinhole (802), a fixed block (803), a first bevel gear (804), a knob (805), a second bevel gear (806) and a fixed shaft (807), a fixed block (803) is arranged inside the needle head (9), a needle hole (802) is arranged inside the fixed block (803), a knob (805) is arranged on the fixed block (803), the knob (805) penetrates through the needle head (9), a first bevel gear (804) is arranged on the knob (805) inside the fixed block (803), the first bevel gear (804) is meshed with a second bevel gear (806), a fixed shaft (807) is arranged on the second bevel gear (806), a control hole (801) is arranged on the second bevel gear (806), and the control hole (801) is four holes with different diameters, and the control hole (801) is axially aligned with the axis of the pinhole (802).

4. A thin layer chromatography deposition needle as claimed in claim 1, wherein: the surface of the piston cylinder (3) is provided with scale marks (4).

5. A thin layer chromatography deposition needle as claimed in claim 1, wherein: a needle shield (5) is arranged on the piston cylinder (3) and at the position of the needle head (9), and a reserved groove matched with the adjusting device (8) is arranged on the needle shield (5).