CN213347902U

CN213347902U - Sample filter for rapid detection and analysis

Info

Publication number: CN213347902U
Application number: CN202021739642.0U
Authority: CN
Inventors: 张亮; 黄文�
Original assignee: Aiboneng Guangzhou Science And Technology Co ltd
Current assignee: Aiboneng Guangzhou Science And Technology Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-06-04
Anticipated expiration: 2030-08-19

Abstract

The utility model relates to a chemical analysis equipment technical field provides a sample filter for short-term test analysis, including upper and lower open-ended body, with the pipe cap of body top adaptation, the body is provided with filter equipment, the body bottom is equipped with the link for be connected with the sample bottle. The utility model discloses set up the filter equipment who is used for screening out the solid matter on the basis of logical heart body and can communicate with outside sample bottle, centrifuging tube and filter commonly used in the preceding processing procedure of chemical analysis detection area sample unites two into one, and simultaneously, the link on the body can also directly be connected with the sample collection bottle, guarantee through the operation of application of sample once, need not to carry out the transfer process of sample again, target composition's extraction and separation purification in the realization sample, one has saved the time of transferring the sample in the conventional operation, two save the use of transfer instruments such as straw and pipette, show the operating efficiency who has promoted the preceding processing of sample.

Description

Sample filter for rapid detection and analysis

Technical Field

The utility model relates to a sample draws filtration equipment technical field, more specifically relates to a sample filter for short-term test analysis.

Background

The accurate analysis and detection of sample components requires first pretreatment of a sample, which generally comprises the following processes: 1. collecting a sample; 2. extracting target components in the sample by using a solvent meeting the requirement; 3. centrifuging, extracting supernatant, filtering to obtain target components meeting the detection amount, and performing on-machine detection; the devices such as centrifuge tube, filter, sample bottle and the like are needed in the whole sample pretreatment process. Specifically, the detection personnel need to add an extracting agent into the collected sample to be detected, mix the mixture uniformly, pour the mixture into a centrifuge tube, shake the mixture uniformly or centrifugally, stand the mixture for a period of time to obtain a sample solution to be detected, absorb the supernatant of the sample solution to be detected, transfer the supernatant into a sample bottle, and then perform the next target component analysis operation.

Therefore, the existing chemical component detection is quite complicated in the pretreatment process of the sample to be detected, operators need to use a plurality of devices such as a centrifugal tube, a filter and a sample bottle in the pretreatment of each sample, and the working strength of the device is not negligible when the sample to be pretreated is large. Therefore, during detection and analysis, the sample pretreatment not only consumes too long time, but also consumes a large amount of chemical reagents, a large amount of centrifuge tubes, filters, sample bottles and other various reagent consumables; therefore, the problems of large detection error, low detection efficiency and high detection cost are caused, and meanwhile, a large amount of used chemical reagents after the pretreatment operation of the sample is finished also generate a new problem of recycling. Chemical analysis means are developing towards the directions of rapidness, trace quantity, accuracy and automation at present, traditional sample pretreatment becomes a restriction factor for the development of modern detection and analysis methods, and people pay more and more attention to how to find rapid and efficient detection means or methods.

In addition, the existing chemical analysis and detection needs workers to complete the collection of samples on site and then transfer the samples back to a laboratory for a series of tests, and the process is long in time consumption and low in detection efficiency; more importantly, some samples with unstable properties are easy to change (such as volatilization and the like) in the transferring process, and the condition can cause the accuracy of the laboratory detection result to be low, and the final detection effect is seriously influenced.

In view of the above circumstances, there is a need to develop a sample pretreatment apparatus that is fast in detection, reliable in detection result, and convenient in detection method.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcoming and the deficiency that prior art exists, the utility model aims to provide an easy operation, portability are strong, can effectively improve detection efficiency's sample filter.

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

the utility model provides a sample filter for short-term test analysis, includes upper and lower open-ended body, with the pipe cap of body top adaptation, the body is provided with filter equipment, the body bottom is equipped with the link for be connected with the sample bottle.

The utility model discloses improve on conventional centrifuge tube structure, specifically speaking be in the inside filter equipment that sets up of body, and the body bottom sets up the link and communicates with outside sample bottle in order to make things convenient for directly. Like this, in sample pretreatment process, operating personnel only need pour the sample of gathering back and extraction solvent into among the body, screw up the pipe cap in the body upper end soon, link to each other sample bottle and link in the body bottom, then carry out hand shake even or centrifuge treatment, the target component in the sample can be extracted in the sample solution, suspended solid and the undissolved substance in the sample solution can be effectively isolated by filter equipment, the sample solution behind the filter equipment directly flows to the sample bottle of link below.

The utility model discloses not only be applicable to extraction and purification separation of conventional solid-state sample the inside target composition, still be applicable to for example the detection of pulp samples such as vomitus, excrement, blood sample, only need adjust the composition that draws the reagent according to the kind of sample and the target composition that awaits measuring in the earlier stage of the processing procedure, and add simultaneously the utility model discloses an in the body, extract the target composition, the rethread in the sample that awaits measuring of solid-state or slurry type the utility model provides a filter equipment filters, gets rid of solid and insoluble substance, accomplishes the pretreatment of sample promptly.

Preferably, the filtering device includes, but is not limited to, filter cotton, membrane filter.

Preferably, a support piece is further arranged on the inner wall of the pipe body and used for fixing the filtering device.

As an embodiment of the utility model, when above-mentioned filter equipment was for filtering the cotton, support piece was the net piece that sets up along the body cross section, so set up, will filter the cotton and arrange the net piece in, accomplish filter equipment's fixed.

As an embodiment of the present invention, when the above-mentioned filtering device is a membrane filter, the support member is a fixing ring disposed along the inner wall of the tube, so as to fix the membrane filter to the fixing ring of the inner wall of the tube, thereby fixing the filtering device.

Preferably, the inner diameter of the connecting end at the bottom of the tube body is matched with the bottle mouth of the sample bottle; generally speaking, the internal diameter of link is less than the internal diameter of body, and when the internal diameter of link and the internal diameter difference of body were great, adopt the entity to fill (for example, increase the body wall thickness of body bottom) between link and the body outer wall to guarantee the firm connection of link and sample bottle, avoid the filter in centrifugal process, because the link is connected insecure with the sample bottle, cause sample bottle and link to take place to break away from, make sample solution throw away from in the sample bottle.

Preferably, the bottom of the tube extends to form a sample bottle protecting member, and the sample bottle protecting member is located at the periphery of the sample bottle after the connecting end is connected with the sample bottle. Because the utility model discloses an improve on the basis of conventional centrifuging tube, the back is connected with the sample bottle to the body, and in centrifugation process, centrifugal groove is arranged in to body and sample bottle, and the sample bottle then exposes in the below of centrifuge dish, and it is easy to take place wearing and tearing or break under high-pressure environment, consequently is necessary to set up the protective layer outside the sample bottle to ensure the normal use of sample bottle.

More preferably, the sample bottle protector has a length equal to or less than the height of the sample bottle. Thereby being convenient for the sample bottle to be connected with the connecting end.

More preferably, the sample bottle protector may be in the form of a cylinder, an outer wall of the cylinder being formed by extending an outer wall of the tube body. Of course, an opening may be provided in the sample bottle protection member to facilitate manual connection of the sample bottle to the connection end.

Preferably, the pipe body wall between the filtering device and the top of the pipe body is provided with scale marks. Because the utility model provides a body is direct to be connected with the sample bottle, is not easily controlled the volume that gets into liquid in the sample bottle at the extraction in-process to when leading to separating body and sample bottle, liquid in the sample bottle takes place to overflow easily or spills. To above-mentioned circumstances, it is necessary to set up the scale mark on the body lateral wall, and the operating personnel of being convenient for implements accurate management and control to its capacity when pouring into sample solution, further guarantees going on smoothly of processing procedure.

Preferably, in the above utility model, the number of the filtering devices is 1, 2, or more than 2; specifically, the number of the filter devices is determined according to the type of the sample to be detected and the detection precision of the target component, when the detection precision of the target component is high, 2 or more than 2 filter devices are arranged in the tube body, so that the influence of impurities in a sample solution on a detection result is avoided as much as possible, and specifically, when the number of the filter devices is 2 or more than 2, each filter device is arranged along the length direction of the tube body.

Preferably, the connection means of the connection end and the sample bottle includes, but is not limited to, a threaded connection and a snap-fit connection. The sample bottles commonly used in the market at present are mainly divided into threaded top sample bottles and jaw top sample bottles, and the specific connection mode of the pipe body and the sample bottles is determined according to the sample bottle types matched with the sample bottles actually. For example, if the sample bottle is an external thread bottle mouth, the lower part of the side wall of the tube body is provided with an internal thread matched with the external thread bottle mouth; when the sample bottle is a jaw top, the lower part of the side wall of the tube body is provided with an inward convex edge matched with the side wall.

Preferably, the pipe body and the pipe cap are made of plastic materials. So set up, one can prevent that the casing from appearing damaging because of colliding with or high-pressure environment in the use, two can improve the sealed elasticity between body upper portion and the pipe cap, between body lower part and the sample bottle, the connection degree of stability of reinforcing each part.

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

the utility model provides a sample filter for short-term test analysis, including upper and lower open-ended body, with the pipe cap of body top adaptation, the body is provided with filter equipment, the body bottom is equipped with the link for be connected with the sample bottle. The utility model discloses set up the filter equipment who is used for screening out the solid matter on the basis of logical heart body and can communicate with outside sample bottle, centrifuging tube and filter commonly used in the preceding processing procedure of chemical analysis detection area sample unites two into one, and simultaneously, the link on the body can also directly be connected with the sample collection bottle, guarantee through the operation of application of sample once, need not to carry out the transfer process of sample again, target composition's extraction and separation purification in the realization sample, one has saved the time of transferring the sample in the conventional operation, two have saved the use of transfer instruments such as straw and pipette, show the operating efficiency who has promoted the preceding processing of sample.

Drawings

Fig. 1 is a schematic structural view (partial perspective) of a sample filter according to the present invention;

FIG. 2 is a schematic external view of FIG. 1;

FIG. 3 is a schematic view (in cross section) of the connection of the filtration apparatus of example 1;

FIG. 4 is a schematic view (in cross section) of the connection of the filtration apparatus of example 2;

FIG. 5 is a schematic external view of the protector for sample bottles according to example 1 or example 2;

reference numerals: 1-a pipe body; 2-pipe cap; 3-a filtration device; 31-filter cotton; 32-a thin film filter; 4-connecting end; 51-mesh sheet; 52-a fixed ring; 6-sample bottle protector.

Detailed Description

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a sample filter for hazardous chemical detection and analysis, including a tube body 1 with upper and lower openings and a tube cap 2 connected to the top of the tube body 1 in an outward screwed manner, wherein a filter device 3 is disposed inside the tube body 1 in a transverse direction, and a connection end 4 is disposed at the bottom of the tube body 1 for communicating with an external sample bottle (the sample bottle is used for collecting a liquid containing a target component to be detected).

Because the sample bottle commonly used on the market at present mainly divide into external screw thread top sample bottle, therefore the link 4 in this embodiment adopts the internal thread form that corresponds, specifically sets up the lower extreme of body 1 inside wall so that carry out sealing connection with the sample bottle.

As shown in fig. 3, in the embodiment, the filtering device 3 is a planar filtering cotton 31, first, a mesh sheet 51 is disposed on the inner cross section of the pipe body 1, and the filtering cotton 31 is disposed on the mesh sheet 51 to be fixed.

In this embodiment, body 1 bottom the internal diameter of link 4 and the bottleneck adaptation of sample bottle to be convenient for being connected of link 4 and sample bottle, when the sample bottle bottleneck is less, the thickness increase between body 1 outer wall and the link 4.

As shown in fig. 5, in this embodiment, the bottom of the tube 1 extends to form a sample bottle protection member 6, and after the connection end 4 is connected to the sample bottle, the sample bottle protection member 6 is located on the periphery of the sample bottle. After the tube body 1 is connected with the sample bottle, the sample bottle can be normally used under the protection of the sample bottle protecting piece 6; in order to facilitate the connection of the sample bottle to the connection end, the sample bottle protector 6 has a length equal to or less than the height of the sample bottle.

In this embodiment, the sample bottle protector 6 has a cylindrical shape, and the outer wall of the cylinder is formed by extending the outer wall of the tube 1.

In this embodiment, the filter device 3 and the pipe body wall between the top of the pipe body 1 are provided with scale marks. The accurate management and control is implemented to its capacity to operating personnel when pouring into sample solution of being convenient for, further guarantees the smooth and easy going on of processing procedure.

In this embodiment, the pipe body 1 and the pipe cap 2 are made of plastic materials. One can prevent to appear damaging because of colliding with or high pressure environment in the use, two can improve the sealed elasticity between 1 upper portion of body and the pipe cap 2, between 1 lower part of body and the sample bottle, the connection degree of stability of reinforcing each part.

Example 2

The connecting end 4 in this embodiment may be provided as an inwardly protruding rim to match a commercially available jaw top sample bottle.

As shown in fig. 4, in the present embodiment, the filtering device 3 is a membrane filter 32, and the supporting member is a fixing ring 52 disposed along the inner wall of the tube body 1, so as to fix the membrane filter 32 to the fixing ring 52 on the inner wall of the tube body, thereby completing the fixing of the membrane filter 32.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a sample filter for short-term test analysis, its characterized in that, including upper and lower open-ended body (1), with pipe cap (2) of body (1) top adaptation, body (1) inside is provided with filter equipment (3), body (1) bottom is equipped with link (4) for be connected with the sample bottle.

2. A sample filter for rapid detection and analysis according to claim 1, characterized in that the filtering means (3) comprises but is not limited to filter cotton, membrane filter.

3. A sample filter for rapid detection and analysis according to claim 2, characterized in that the inner wall of the tube (1) is further provided with a support for fixing the filter device (3).

4. A sample filter for rapid detection and analysis according to claim 3, characterized in that, when the filtering means (3) is a filter cotton, the support is a mesh sheet (51) arranged along the cross section of the tube (1).

5. A sample filter for rapid test analysis according to claim 3, characterized in that the support is a fixing ring (52) arranged along the inner wall of the tubular body (1) when the filtering means (3) is a membrane filter.

6. A sample filter for rapid detection and analysis according to claim 1, characterized in that the inner diameter of the connection end (4) is adapted to the mouth of the sample bottle.

7. The sample filter for rapid detection and analysis according to claim 1, wherein the bottom of the tube (1) is extended to form a sample bottle protector (6), and the sample bottle protector (6) is located on the periphery of the sample bottle when the connection end (4) is connected with the sample bottle.

8. The sample filter for rapid detection and analysis according to claim 7, wherein the sample bottle protector (6) has a length equal to or less than the height of the sample bottle.

9. A sample filter for rapid detection and analysis according to claim 1, characterized in that the wall of the tube (1) between the filter means (3) and the top of the tube (1) is provided with graduation marks.

10. The sample filter for rapid detection and analysis according to claim 1, wherein the number of the filtering means (3) is 2, or more than 2; each of the filter devices (3) is arranged along the length direction of the pipe body (1).