CN215448656U

CN215448656U - Solid phase micro-extraction device

Info

Publication number: CN215448656U
Application number: CN202120935274.5U
Authority: CN
Inventors: 曾炟; 汤体; 刘媛; 黄晖辉; 曾琼芳
Original assignee: Changsha Wormer Technology Co ltd
Current assignee: Changsha Wormer Technology Co ltd
Priority date: 2021-05-05
Filing date: 2021-05-05
Publication date: 2022-01-07
Anticipated expiration: 2031-05-05

Abstract

The utility model provides a solid phase micro-extraction device which comprises a needle seat, wherein a sleeve is fixedly connected on the needle seat, the sleeve is internally sleeved with a connecting push rod, a fixed block is fixedly connected below the push rod, a sampling mechanism is fixedly connected on one side of the needle seat, and a protection mechanism is connected in the sampling mechanism in a sliding manner. The solid-phase micro-extraction device provided by the utility model has the advantages that the material of the sampling rod is changed from fiber into steel wire, so that the service life of the sampling rod is prolonged, meanwhile, the solid-phase micro-extraction device provided by the utility model has small volume and is convenient to use, and the sampling rod is protected in an all-round way.

Description

Solid phase micro-extraction device

Technical Field

The utility model mainly relates to the technical field of solid-phase micro-extraction, in particular to a solid-phase micro-extraction device.

Background

Since the early 1990 s, Solid Phase Microextraction (SPME) was known. The central portion of the SPME device is typically a fiber. The latter may exist in different forms, in particular with varying polarity. Depending on the polarity of the fiber material, analytes of substantially the same polarity can be extracted from the matrix, which can be either gaseous or liquid, in the method. Thus, the analytes of the matrix accumulate on the fibers, whereupon the analytes on the fibers can be desorbed and analyzed, for example, in a gas chromatograph.

However, the existing solid phase micro-extraction device has a large volume, and the fiber material is fragile, and after long-time use, the fiber material needs to be replaced, so that the replacement steps are complicated, and the detection effect is not favorable.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a solid phase micro-extraction device, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a solid phase micro-extraction device, includes the needle file, fixed connection sleeve on the needle file, sleeve endotheca and connecting push rod, the below fixed connection fixed block of fixed connection of push rod, one side fixed connection sampling mechanism of needle file, sliding connection protection mechanism in the sampling mechanism.

Preferably, the sampling mechanism comprises a piston handle, the piston handle is fixedly connected to the needle base, a piston is fixedly connected to the lower portion of the piston handle, and a sampling rod is fixedly connected to the lower portion of the piston.

Preferably, the sampling rod is made of steel wires.

Preferably, the protection mechanism comprises a handle, the handle is connected to the inside of the piston in a sliding mode, a piston cylinder is fixedly connected to the lower portion of the handle, and a needle head is fixedly connected to the lower portion of the piston cylinder.

Preferably, one end of the piston handle penetrates through the piston cylinder and is fixedly connected to the piston, and the sampling rod is slidably connected to the inside of the needle head.

Preferably, a magnetic block is fixedly connected to the lower portion of the fixed block, through holes with the same size are formed in the magnetic block and the fixed block, and the needle head is slidably connected in the through holes.

Compared with the prior art, the utility model has the beneficial effects that:

the solid-phase micro-extraction device provided by the utility model has the advantages that the material of the sampling rod is changed from fiber into steel wire, so that the service life of the sampling rod is prolonged, meanwhile, the solid-phase micro-extraction device provided by the utility model has small volume and is convenient to use, and the sampling rod is protected in an all-round way.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the sampling rod of the present invention inside the needle;

FIG. 3 is a schematic view of the sampling rod of the present invention with the needle outside;

fig. 4 is a partially enlarged view of the point a of the present invention.

In the figure: 1. a needle seat; 2. a sleeve; 3. a push rod; 4. a fixed block; 41. a magnetic block; 42. a through hole; 5. a sampling mechanism; 51. a piston handle; 52. a piston; 53. a sampling rod; 6. a protection mechanism; 61. a handle; 62. a piston cylinder; 63. a needle.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the embodiment, referring to fig. 1-4, a solid phase micro-extraction device includes a needle holder 1, a sleeve 2 fixedly connected to the needle holder 1, a sleeve 2 and a connecting rod 3, a fixed block 4 fixedly connected to the lower portion of the rod 3, a sampling mechanism 5 fixedly connected to one side of the needle holder 1, and a protection mechanism 6 slidably connected to the sampling mechanism 5.

The sampling mechanism 5 comprises a piston handle 51, the piston handle 51 is fixedly connected to the needle base 1, a piston 52 is fixedly connected below the piston handle 51, and a sampling rod 53 is fixedly connected below the piston 52; the sampling rod 53 is made of steel wire; one end of the piston shaft 51 extends through the piston cylinder 62 and is fixedly connected to the piston 52, and the sampling rod 53 is slidably connected to the inside of the needle 63. This design is through locating the thief rod 53 slip in syringe needle 6, like this in syringe needle 6 inserts the sample bottle after, pull handle 61 again and just can make thief rod 53 expose in the sample bottle, take a sample, and thief rod 53 has also prolonged its life for the setting of steel wire simultaneously.

The protection mechanism 6 comprises a handle 61, the handle 61 is slidably connected to the inside of the piston 52, a piston cylinder 62 is fixedly connected to the lower portion of the handle 61, and a needle 63 is fixedly connected to the lower portion of the piston cylinder 62. This design is through removing handle 61 for handle 61 drives piston cylinder 62 and syringe needle 63 and reciprocates, makes the thief rod 53 in syringe needle 63 both can protected also can get liquid to the material in the sample bottle.

The magnetic block 41 is fixedly connected below the fixed block 4, through holes 42 with the same size are formed in the magnetic block 41 and the fixed block 4, and the needle 63 is slidably connected in the through holes 42. The design limits the sample bottle which is also provided with the magnetic block through the magnetic block 41, so that the sample bottle cannot ascend along with the needle 63 when the push rod 3 is moved.

The specific operation mode of the utility model is as follows:

firstly, the needle base 1 is arranged above the sample bottle, the needle 63 is aligned to the center of the bottle cap, the handle 61 is arranged at the lowest position relative to the needle base 1, the whole device is moved downwards at the moment, the needle 63 is penetrated into the sample bottle through the through hole 42, then the handle 61 is moved upwards, the sample bottle is limited by the fixing block 4 and cannot move upwards along with the handle 61, the sampling rod 53 is connected inside the needle 63 in a sliding mode when the handle 61 is moved upwards, the sampling rod 53 cannot ascend along with the sampling rod, but is exposed in the sample bottle, the object in the sample bottle is sampled, after the object is adhered to the sampling rod 53, the handle 61 is moved downwards, the sampling rod 53 returns to the inside of the needle 63, then the whole device is moved upwards, and the push rod 3 is pressed simultaneously, so that the sample bottle cannot move upwards along with the handle 61, and the needle 63 is pulled out of the sample bottle.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The utility model provides a solid phase micro-extraction device, includes needle file (1), its characterized in that, fixed connection sleeve (2) are gone up in needle file (1), sleeve (2) endotheca and connecting rod (3), below fixed connection fixed block (4) of push rod (3), one side fixed connection sampling mechanism (5) of needle file (1), sliding connection protection mechanism (6) in sampling mechanism (5).

2. A solid phase micro extraction device according to claim 1, characterized in that the sampling mechanism (5) comprises a piston handle (51), the piston handle (51) is fixedly connected to the needle holder (1), a piston (52) is fixedly connected to the lower part of the piston handle (51), and a sampling rod (53) is fixedly connected to the lower part of the piston (52).

3. A solid phase microextraction device according to claim 2, characterized in that said sampling rod (53) is made of steel wire.

4. A solid phase micro-extraction apparatus as claimed in claim 2, wherein the protection mechanism (6) comprises a handle (61), the handle (61) is slidably connected to the inside of the piston (52), a piston cylinder (62) is fixedly connected to the lower part of the handle (61), and a needle (63) is fixedly connected to the lower part of the piston cylinder (62).

5. A solid phase microextraction device according to claim 4, characterized in that one end of said piston handle (51) extends through said piston cylinder (62) and is fixedly connected to said piston (52), and said sampling rod (53) is slidably connected to the inside of said needle (63).

6. The solid phase micro-extraction device according to claim 4, wherein a magnetic block (41) is fixedly connected below the fixed block (4), through holes (42) with the same size are formed in the magnetic block (41) and the fixed block (4), and the needle (63) is slidably connected in the through holes (42).