CN221056409U

CN221056409U - Sample pretreatment device

Info

Publication number: CN221056409U
Application number: CN202321916029.5U
Authority: CN
Inventors: 童彩环; 秦海芝; 武广元; 徐玲霞; 齐凤鸣; 万喜喜
Original assignee: Ningbo Cti Technology Co ltd
Current assignee: Ningbo Cti Technology Co ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2024-05-31
Anticipated expiration: 2033-07-20

Abstract

The application belongs to the technical field of ion chromatography detection and analysis, and provides a sample pretreatment device, which comprises a fixed bracket, pretreatment components, injectors and a pressing plate, wherein the fixed bracket is provided with a plurality of fixed perforations, the injectors are in one-to-one plug connection with the pretreatment components, the injectors and the pretreatment components which are correspondingly connected are in one-to-one corresponding penetration and are fixed in the fixed perforations, the pistons of the injectors extend out of the corresponding fixed perforations respectively, and the pressing plate is used for being arranged on one side of the injectors, which is opposite to the corresponding pretreatment components, so as to press the pistons of the injectors simultaneously; after the samples are respectively assembled in the syringes, the pressing plate is arranged on one side of each syringe, which is opposite to each pretreatment component, of each syringe, and the piston of each syringe is pressed down simultaneously, so that the samples of each syringe can be respectively pushed into each pretreatment component for batch treatment, the situation that operators manually press the pistons of each syringe one by one is avoided, and the ion chromatography detection analysis efficiency of the samples is improved.

Description

Sample pretreatment device

Technical Field

The application belongs to the technical field of ion chromatography detection and analysis, and particularly relates to a sample pretreatment device.

Background

When an ion chromatographic instrument is used for detecting and analyzing a sample, for the sample containing more interference components, a syringe connected with a pretreatment column and a syringe type filter membrane is usually required to be used for pretreatment and then sample injection, wherein the sample is pre-assembled in the syringe, and then the sample in the syringe sequentially passes through the pretreatment column and the syringe type filter membrane filter by pushing a piston of the syringe so as to complete pretreatment, but in the treatment process, the pore diameters of the pretreatment column and the syringe type filter membrane filter are relatively smaller, so that an operator is required to squeeze the piston of the syringe with larger pressure, and particularly when the sample amount is larger, the operator is relatively time-consuming and labor-consuming to squeeze the piston of each syringe one by one, thereby affecting the ion chromatographic detection and analysis efficiency of the sample.

Disclosure of utility model

The application aims to provide a sample pretreatment device, which aims to solve the problems that in the prior art, when an ion chromatograph instrument is adopted to detect and analyze a sample, an operator is required to squeeze pistons of injectors with larger pressure in the pretreatment process of the sample, and especially when the sample size is larger, the operator is relatively time-consuming and labor-consuming to squeeze the pistons of the injectors one by one, so that the ion chromatograph detection and analysis efficiency of the sample is affected.

In order to achieve the above purpose, the application adopts the following technical scheme: the utility model provides a sample preprocessing device, including fixed bolster, preprocessing subassembly, syringe and clamp plate, a plurality of fixed perforation have been seted up to the fixed bolster, and each syringe one-to-one grafting communicates each preprocessing subassembly, and each syringe and each preprocessing subassembly that corresponds to link up one-to-one wear to locate each fixed perforation internal fixation, and the piston of each syringe stretches out respectively in each fixed perforation that corresponds, and the clamp plate is used for setting up in each syringe and is opposite to each preprocessing subassembly's of correspondence one side to press the piston of each syringe simultaneously.

In one embodiment, the fixing support comprises two supporting side plates which are opposite to each other at intervals, a supporting bottom plate, a first supporting plate, a second supporting plate and a third supporting plate, a plurality of supporting plate slots which are distributed at equal intervals are formed in the mirror image of the two supporting side plates, the supporting bottom plate is fixedly arranged at the bottom end of the supporting side plate, the first supporting plate, the second supporting plate and the third supporting plate are sequentially and movably arranged on the supporting side plate along the direction far away from the supporting bottom plate through a plurality of pairs of supporting plate slots, a plurality of first through holes, a plurality of second through holes and a plurality of third through holes are respectively formed in the first supporting plate, the second supporting plate and the third supporting plate, the first through holes, the second through holes and the third through holes are in one-to-one correspondence and are coaxially and oppositely arranged, and all fixing through holes are formed in a matching mode.

In one embodiment, the fixing support further comprises a plurality of supporting columns, each supporting column is respectively arranged on one side of the third support plate, which is opposite to the supporting bottom plate, and the pressing plate movably penetrates through each supporting column along the extending direction of the supporting column.

In one embodiment, each support upright is sleeved with a buffer spring, and each buffer spring is located between the third support plate and the pressing plate.

In one embodiment, a plurality of first slots corresponding to the third through holes in a one-to-one coaxial manner are formed in one side, facing the third support plate, of the pressing plate, and a plurality of second slots corresponding to the first through holes in a one-to-one coaxial manner are formed in one side, facing the first support plate, of the supporting bottom plate.

In one embodiment, the pretreatment component comprises a sampling tube body, at least one syringe type filter membrane filter and at least one ion chromatography pretreatment column, wherein the sampling tube body is penetrated in the first through hole in a one-to-one correspondence manner and supported on the second slot hole in a one-to-one correspondence manner, the syringe type filter membrane filter, the ion chromatography pretreatment column and the injector are sequentially spliced and communicated along the direction far away from the supporting bottom plate, the syringe type filter membrane filter adjacent to the sampling tube body is supported on the second through hole in a one-to-one correspondence manner and penetrated in the corresponding second through hole, and the injector is supported on the third through hole in a one-to-one correspondence manner and penetrated in the corresponding third through hole.

In one embodiment, the syringe filter and the injector have annular stand structures adapted to be supported at the outer edges of the second and third through-holes, respectively.

Compared with the prior art, the sample pretreatment device provided by the application has the beneficial effects that the sample pretreatment device comprises the fixed support, the pretreatment components, the syringes and the pressing plates, wherein the fixed support is provided with a plurality of fixed perforations, the syringes are connected with the pretreatment components in a one-to-one correspondence manner, the syringes and the corresponding connected pretreatment components are penetrated into the fixed perforations one by one to form fixation, and the pistons of the syringes extend out of the fixed perforations one by one, so that after the samples are respectively assembled in the syringes, the pressing plates are arranged on one side of the syringes opposite to the pretreatment components, and the pistons of the syringes are simultaneously pressed down, so that the samples of the syringes can be respectively pushed into the pretreatment components for batch treatment, the pistons of the syringes are prevented from being manually extruded one by an operator, and the ion chromatography detection and analysis efficiency of the samples is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a sample pretreatment apparatus according to some embodiments of the present application;

Fig. 2 is a schematic structural view of a fixing bracket and a pressing plate in the sample pretreatment apparatus shown in fig. 1.

10. A sample pretreatment device; 100. a fixed bracket; 101. fixing the perforation; 110. supporting the side plates; 111. a support plate slot; 120. a support base plate; 121. a second slot; 130. a first support plate; 131. a first through hole; 140. a second support plate; 141. a second through hole; 150. a third support plate; 151. a third through hole; 160. a support column; 200. a pre-processing assembly; 210. a sampling tube body; 220. needle cylinder type filter membrane filter; 230. an ion chromatography pretreatment column; 300. a syringe; 400. a pressing plate; 401. a first slot.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1, and taking the perspective view of fig. 1 as an example, a sample pretreatment apparatus 10 provided by an embodiment of the present application is now described, where the sample pretreatment apparatus 10 is suitable for pretreating a liquid sample to remove interference components in the sample before detecting and analyzing the liquid sample by an ion chromatograph, and includes a fixing bracket 100, a pretreatment assembly 200, an injector 300 and a pressing plate 400, wherein a plurality of fixing holes 101 extending along a vertical direction are formed in an array of the fixing bracket 100, each injector 300 is respectively inserted and connected with each pretreatment assembly 200 in a one-to-one correspondence manner, and each injector 300 and each corresponding connected pretreatment assembly 200 are respectively inserted and fixed in the fixing holes 101 in a one-to-one correspondence manner, a piston of each injector 300 is respectively extended out of each corresponding fixing hole 101, and the pressing plate 400 is used for being disposed on a side of each injector 300 opposite to each corresponding pretreatment assembly 200, so as to abut against the piston of each injector 300, thereby being capable of simultaneously pressing down the piston of each injector 300.

Compared with the prior art, the sample pretreatment apparatus 10 provided by the application has the beneficial effects that the sample pretreatment apparatus 10 comprises the fixed support 100, the pretreatment assemblies 200, the syringes 300 and the pressing plates 400, wherein the fixed support 100 is provided with a plurality of fixing holes 101 extending along the vertical direction, the syringes 300 are connected with the pretreatment assemblies 200 in a one-to-one correspondence manner, the syringes 300 and the corresponding connected pretreatment assemblies 200 are penetrated into the fixing holes 101 in a one-to-one correspondence manner to form fixation, the pistons of the syringes 300 respectively extend out of the corresponding fixing holes 101, and thus, when samples are respectively assembled in the syringes 300, the pressing plates 400 are arranged on one side of the syringes 300 opposite to the pretreatment assemblies 200, and simultaneously, the pistons of the syringes 300 are pushed into the pretreatment assemblies 200 for batch treatment, so that operators can be prevented from manually extruding the pistons of the syringes 300 one by one, the ion chromatography detection analysis efficiency of the samples is improved, and the pretreatment assemblies 200 and the syringes 300 are respectively fixed in the fixing holes 101, and the pistons of the syringes 300 can be prevented from being damaged by the bending force of the syringes 300 when the syringes 300 are pressed down by the fixing plates 300.

Referring to fig. 2, and taking the view angle of fig. 2 as an example, further, in this embodiment, the fixing bracket 100 includes two supporting side plates 110 disposed opposite to each other along a horizontal direction, and a supporting bottom plate 120, a first supporting plate 130, a second supporting plate 140 and a third supporting plate 150, wherein a plurality of supporting plate slots 111 disposed along a vertical direction at equal intervals are mirror-image-formed on the two supporting side plates 110, the first supporting plate 130, the second supporting plate 140 and the third supporting plate 150 are movably disposed on the supporting side plates 110 along a vertical direction far away from the supporting bottom plate 120 through a plurality of pairs of supporting plate slots 111, that is, the first supporting plate 130, the second supporting plate 140 and the third supporting plate 150 can be position-adjusted along a vertical direction on the supporting side plates 110 by inserting into the supporting side plates 111 of different pairs, and the first supporting plate 130, the second supporting plate 140 and the third supporting plate 150 are sequentially disposed along a vertical direction far away from the supporting bottom plate 120, in addition, the first supporting plate 130, the second supporting plate 140 and the third supporting plate 150 are respectively provided with a plurality of first through holes 131, a plurality of second through holes 131 and a plurality of through holes 131, a plurality of through holes 131 are correspondingly arranged, and a first through holes 101 and a second through hole 141 are correspondingly arranged, and a first through hole 101 is correspondingly formed, and a first through hole is correspondingly and a first through hole is formed, and a through hole is formed.

Further, in the present embodiment, the fixing bracket 100 further includes a plurality of support columns 160, each support column 160 is disposed on a side of the third support plate 150 facing away from the support bottom plate 120 along a vertical direction, and four corners of the pressing plate 400 are movably disposed on each support column 160 along the vertical direction.

Still further, in other embodiments, each of the support posts 160 is sleeved with a buffer spring (not shown), and each buffer spring is located between the third support plate 150 and the pressing plate 400.

Further, in the present embodiment, the pressing plate 400 is provided with first slots 401 corresponding to the third through holes 151 on a side facing the supporting base plate 120, so that when the pressing plate 400 presses down the piston of each syringe 300, the piston of each syringe 300 can be correspondingly inserted into each first slot 401 to be fixed, and in addition, the supporting base plate 120 is provided with second slots 121 corresponding to the first through holes 131 on a side facing the first supporting plate 130, so that one end of each pretreatment component 200 can be correspondingly inserted into each second slot 121 to be fixed.

Further, in this embodiment, the pretreatment module 200 includes a sampling tube body 210, at least one syringe-type filter membrane filter 220, and at least one ion chromatography pretreatment column 230, where the sampling tube body 210 is disposed in the first through hole 131 in a one-to-one correspondence and supported on the corresponding second slot 121, and the at least one syringe-type filter membrane filter 220, the at least one ion chromatography pretreatment column 230, and the injector 300 are sequentially inserted and connected along a vertical direction away from the supporting base plate 120, that is, any ion chromatography pretreatment column 230 is disposed between any syringe-type filter membrane filter 220 and the injector 300, and the syringe-type filter membrane filter 220 adjacent to the sampling tube body 210 is disposed in the second through hole 141 in a one-to-one correspondence and is disposed in the corresponding second through hole 141 in a spacing of 0.8 cm to 1.2cm relative to the corresponding sampling tube body 210, and the injector 300 is disposed in the corresponding third through hole 151 in a one-to-one correspondence and is inserted and connected with the corresponding ion chromatography pretreatment column 230.

Specifically, in the present application, the pretreatment module 200 includes two syringe type filter membranes 220 and two ion chromatography pretreatment columns 230; it should be noted that, in other embodiments, the number and arrangement order of the syringe type filter 220 and the ion chromatography pretreatment column 230 in the pretreatment assembly 200 can be flexibly adjusted based on the actual pretreatment requirement, and the positions of the first support 130, the second support 140 and the third support 150 can be adjusted by different pairs of support slots 111 according to the final adjustment result of the pretreatment assembly 200, and the pretreatment assembly 200 and the injector 300 can be assembled.

It will be appreciated that the outer walls of the conventional syringe filter 220 and syringe 300 generally have a ring structure, and thus, the syringe filter 220 and syringe 300 may be supported on the outer edges of the second through-hole 141 and the third through-hole 151 by the ring structure.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. The sample pretreatment device is characterized by comprising a fixing bracket, pretreatment components, injectors and a pressing plate, wherein the fixing bracket is provided with a plurality of fixing perforations, the injectors are in one-to-one correspondence plug-in connection with the pretreatment components, the injectors and the corresponding connected pretreatment components are in one-to-one correspondence penetrating and fixing in the fixing perforations, the pistons of the injectors extend out of the corresponding fixing perforations respectively, and the pressing plate is used for being arranged on one side of the injectors, which is opposite to the corresponding pretreatment components, so as to press the pistons of the injectors simultaneously;

The fixing support comprises two supporting side plates, a supporting bottom plate, a first supporting plate, a second supporting plate and a third supporting plate, wherein the supporting side plates are arranged opposite to each other at intervals, a plurality of supporting plate slots which are distributed at equal intervals are formed in the mirror image of the two supporting side plates, the supporting bottom plate is fixedly arranged between the bottom ends of the two supporting side plates, the first supporting plate, the second supporting plate and the third supporting plate are sequentially and movably arranged on the supporting side plates through a plurality of pairs of supporting plate slots along the direction far away from the supporting bottom plate, a plurality of first through holes, a plurality of second through holes and a plurality of third through holes are formed in the first supporting plate, the second supporting plate and the third supporting plate respectively, and the first through holes, the second through holes and the third through holes are in one-to-one correspondence and coaxially and oppositely form fixing through holes;

A plurality of first slotted holes which are opposite to the third through holes one by one and coaxial are formed in one side, facing the third support plate, of the pressing plate, and a plurality of second slotted holes which are opposite to the first through holes one by one and coaxial are formed in one side, facing the first support plate, of the supporting bottom plate;

The pretreatment component comprises a sampling tube body, at least one syringe type filter membrane filter and at least one ion chromatography pretreatment column, wherein the sampling tube body is penetrated in the first through hole in a one-to-one correspondence manner and supported on the second slotted hole in a one-to-one correspondence manner, the syringe type filter membrane filter, the ion chromatography pretreatment column and the injector are sequentially spliced and communicated along the direction far away from the supporting bottom plate, the syringe type filter membrane filter adjacent to the sampling tube body is supported on the second through hole in a one-to-one correspondence manner and penetrated in the corresponding second through hole, and the injector is supported on the third through hole in a one-to-one correspondence manner and penetrated in the corresponding third through hole.

2. The pretreatment device of claim 1, wherein the fixing support further comprises a plurality of supporting columns, each supporting column is respectively arranged on one side of the third support plate, which is opposite to the supporting bottom plate, and the pressing plate movably penetrates through each supporting column along the extending direction of the supporting column.

3. The pretreatment device as recited in claim 2, wherein each of said support posts is sleeved with a buffer spring, each of said buffer springs being located between said third support plate and said pressure plate.

4. The sample pretreatment apparatus according to claim 3, wherein the syringe filter and the syringe each have a ring structure adapted to be supported on an outer edge of the second through-hole and an outer edge of the third through-hole.