CN215574155U - Novel reagent sample pretreatment device - Google Patents

Abstract

The utility model relates to a novel reagent sample pretreatment device, and belongs to the technical field of sample treatment equipment. Comprises a solvent pump, a solid phase extraction device, a multi-way sampling selection valve and a multi-way collection selection valve; the inlet end of the solvent pump is communicated with a multi-way sample introduction selection valve which is communicated with a sample and different reagents; the outlet end of the solvent pump is communicated with the inlet of the solid phase extraction device; the solid phase extraction device comprises a plurality of groups of two-way reversing valves and packing columns which are connected in series; two-way reversing valves are arranged in each group, and one through port of each two-way reversing valve is directly communicated with the other through port and communicated with the other through a packing column; the solid phase extraction device also comprises at least one group of standby two-way reversing valves, and one port of each group of two-way reversing valves is directly communicated with the other port for standby; two adjacent two groups of two-way reversing valves in the solid phase extraction device are communicated through a concentration cup; the outlet at the tail end of the solid phase extraction device is communicated with a multi-way collection selection valve through a C18 column.

Description

Novel reagent sample pretreatment device

Technical Field

The utility model relates to a novel reagent sample pretreatment device, and belongs to the technical field of sample treatment equipment.

Background

Sample pretreatment, also called sample pretreatment. Refers to the process of breaking down a sample to allow quantitative transfer of the component to be measured into solution for analytical determination. For inorganic substances, dissolution is mainly used. Dissolution is the dissolution of the sample in water, acid, base or other solvents, including leaching and digestion. The sample pretreatment requires the use of a dedicated processing device.

The sample pretreatment device used at present can meet the requirement of automation, is convenient to operate, but still has the defect of poor adaptability, and is mainly embodied in that the sample pretreatment device cannot be expanded for use; and the concentration of the treated sample is not improved, so that the subsequent test can be influenced to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel reagent sample pretreatment device.

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

a novel reagent sample pretreatment device comprises a solvent pump, a solid phase extraction device, a multi-way sample introduction selection valve and a multi-way collection selection valve; the inlet end of the solvent pump is communicated with a multi-way sample introduction selection valve which is communicated with a sample and different reagents; the outlet end of the solvent pump is communicated with the inlet of the solid phase extraction device; the solid phase extraction device comprises a plurality of groups of two-way reversing valves and packing columns which are connected in series; two-way reversing valves are arranged in each group, and one through port of each two-way reversing valve is directly communicated with the other through port and communicated with the other through a packing column; the solid phase extraction device also comprises at least one group of standby two-way reversing valves, and one port of each group of two-way reversing valves is directly communicated with the other port for standby; two adjacent two groups of two-way reversing valves in the solid phase extraction device are communicated through a concentration cup; the outlet at the tail end of the solid phase extraction device is communicated with a multi-way collection selection valve through a C18 column.

The utility model is further improved in that: the through port connected between the two-way reversing valves is communicated by a hose, and the through port connected between the two-way reversing valves and the filler column is communicated with a hose and a hose connector.

The utility model is further improved in that: one port of the standby two-way reversing valve is directly communicated, and the other port of the standby two-way reversing valve is standby and is connected with a hose connector and a hose; the outer end of the hose is provided with a rubber cover.

The utility model is further improved in that: and a pressure sensor is arranged on a pipeline for communicating the solvent pump with the solid phase extraction device.

The utility model is further improved in that: the filler column comprises a silica gel filler column, an alumina filler column and an active carbon filler column.

Due to the adoption of the technical scheme, the utility model has the following technical effects:

the utility model expands the processing part of the device, and the extended concentration cup can concentrate the sample reagent, thereby facilitating the subsequent experiment. The device is also provided with an expanded C18 column to ensure adequate handling of the reagents.

The utility model is provided with the standby two-way reversing valve group, so that corresponding filler columns can be added according to the needs, and the adaptability of the device is improved.

The utility model has reasonable structure arrangement, and the expanded components improve the service performance of the device.

Drawings

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

the system comprises a solvent pump 1, a multi-way sampling selection valve 2, a multi-way collecting selection valve 3, a two-way reversing valve 4, a silica gel packing column 5, an alumina packing column 6, an alumina packing column 7, an activated carbon packing column 8 and a pressure sensor, wherein the solvent pump is connected with the pressure sensor;

A. a switching device B and a standby two-way reversing valve set.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element 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, such as "connected," which may be fixedly connected, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model relates to a novel reagent sample pretreatment device, which is used for pretreating a sample reagent and is an improvement on the existing equipment. Mainly can treat dioxin.

As shown in figure 1, the device mainly comprises a solvent pump 1, a solid phase extraction device, a multi-way sample introduction selection valve 2 and a multi-way collection selection valve 3. The solvent pump 1 is used for pumping samples or solvents, the inlet end of the solvent pump 1 is communicated with the multi-way sampling selection valve 2, and the multi-way sampling selection valve 2 can be communicated with the samples and different reagents. The multi-way sample introduction selection valve 2 has a plurality of inlets through which it communicates with containers for samples and containers for different reagents. The multi-way sampling selection valve 2 can control different inlets to be communicated with the outlets so as to realize the selective pumping of samples or reagents.

As shown in fig. 1, the outlet of the solvent pump 1 communicates with the inlet of the solid phase extraction apparatus. The solid phase extraction device is used for carrying out extraction treatment on a sample. Specifically, the solid phase extraction device comprises a plurality of groups of solid phase extraction devices connected in series and a packed column. Every two-way reversing valves 4 form a group; the two-way reversing valve is provided with three through openings, wherein one side of the three-way reversing valve is provided with one through opening, and the other side of the three-way reversing valve is provided with two through openings. One port of each of the two-way selector valves 4 of the same group is the inlet and outlet of the group, while the other two ports of each group perform the function of switching. Two other ports, one of which is in direct communication and the other of which is in communication through a packed column. By adjusting the two-way crossover valves 4 in the stack, the passage can be either through or around the packed column. The solid phase extraction device in fig. 1 comprises three groups of two-way reversing valves 4, and the three groups of two-way reversing valves are all connected and provided with a packing column.

One of the main improvements of the device is that the solid phase extraction device also comprises at least one group of two-way reversing valves 4 used as a spare, which is called a spare two-way reversing valve group B. As shown in fig. 1, the connection mode of the two-way reversing valve set is the same as the structure of the two-way reversing valve set connected with the packing column, except that the packing column is not installed. The position is selected to be installed by a proper packing column when needed, and the standby function is achieved. In fig. 1, a group of spare two-way directional valves 4 is provided, and two or three groups of valves can be provided. The arrangement of the standby two-way reversing valve group B improves the flexibility of the device, and improves the adaptability and the application range. When a certain filling column in use cannot be used normally, the filling column can be installed in time at the standby two-way reversing valve group B, and the normal use of the whole instrument is ensured.

The other main improvement of the device is that a concentration cup is communicated between two adjacent two groups of two-way reversing valves 4 in the solid phase extraction device, and the two groups of two-way reversing valves 4 are communicated through the concentration cup. In particular to a concentration cup arranged between two groups of two-way reversing valves which are both provided with a packing column. The concentration cup can play a role in concentrating a sample.

Another main improvement of the utility model is that a C18 column is arranged at the outlet of the tail end of the solid phase extraction device and is communicated with the multi-way collection selector valve 3 through a C18 column. Different outlets of the multi-way collection selector valve 3 are communicated with different reagent bottles, and different separated components enter different reagent bottles.

The utility model is provided with a plurality of two-way reversing valves 4, and the ports connected between the adjacent two-way reversing valves 4 are communicated by using a hose. The through port of the two-way reversing valve 4 connected with the packing column is communicated with a hose and a hose connector, the hose connector is connected with the through port of the two-way reversing valve 4, and the outer end of the hose is communicated with the packing column.

And as two spare two-way reversing valves 4, one of the ports is directly communicated by using a hose, and the other port is spare and is connected with a hose connector and a hose. The outer end of the hose is provided with a rubber cover, and the rubber cover is taken down and then connected with and mounted with the packing column when in use. When not in use, the rubber cover can ensure safety and sanitation.

In a specific implementation, the packed columns include a silica gel packed column 5, an alumina packed column 6, and an activated carbon packed column 7. The silica gel filler column 5, the alumina filler column 6 and the activated carbon filler column 7 are sequentially arranged according to the flow direction of the sample. The active carbon filled column 7 uses a switching device to realize forward and reverse switching, and a sample and a reagent can pass through the active carbon filled column 7 in a forward direction and can also pass through the active carbon filled column 7 in a reverse direction. As shown in fig. 1, the switching device a comprises 4 two-way directional valves, and the communication state of the switching device shown in fig. 1 is that the reagent flows downwards from the activated carbon packed column 7; when all four two-way reversing valves change gears, the reagent flows upwards from the lower part of the activated carbon packed column 7.

The above description of the structure is mainly a description of the pipe connection inside the device. The device has a housing with the above-mentioned pipe sections located inside the housing. Then, the packing columns are arranged outside the device shell, an installation frame is arranged outside the shell, the packing columns are clamped and fixed on the corresponding installation frame, and then the corresponding packing columns are connected with the two-way reversing valve through hoses and hose connectors.

In a specific implementation, the device is provided with a pressure sensor 8 on a pipeline of the solvent pump 1 communicated with the solid phase extraction device, and the pressure sensor is used for monitoring the working pressure of the solvent pump 1.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. A novel reagent sample pretreatment device comprises a solvent pump (1), a solid phase extraction device, a multi-way sample introduction selection valve (2) and a multi-way collection selection valve (3); the inlet end of the solvent pump (1) is communicated with a multi-way sampling selection valve (2), and the multi-way sampling selection valve (2) is communicated with a sample and different reagents; the outlet end of the solvent pump (1) is communicated with the inlet of the solid phase extraction device; the solid phase extraction device comprises a plurality of groups of two-way reversing valves (4) connected in series and a packed column; two-way reversing valves (4) are arranged in each group, and one through port of each two-way reversing valve (4) is directly communicated with the other through port and is communicated with the other through a packing column; the method is characterized in that: the solid phase extraction device also comprises at least one group of standby two-way reversing valves (4), and one through port of each group of two-way reversing valves (4) is directly communicated with the other through port for standby; two adjacent groups of two-way reversing valves (4) in the solid phase extraction device are communicated through a concentration cup; the outlet at the tail end of the solid phase extraction device is communicated with a multi-way collection selection valve (3) through a C18 column.

2. The novel reagent sample pretreatment processing device according to claim 1, characterized in that: the through ports connected between the two-way reversing valves (4) are communicated through hoses, and the through ports connected between the two-way reversing valves (4) and the packing columns are communicated through hoses and hose connectors.

3. The novel reagent sample pretreatment processing device according to claim 1, characterized in that: one port of the standby two-way reversing valve (4) is directly communicated, and the other port is standby and is connected with a hose connector and a hose; the outer end of the hose is provided with a rubber cover.

4. The novel reagent sample pretreatment device according to any one of claims 1 to 3, characterized in that: a pressure sensor (8) is arranged on a pipeline which is communicated with the solvent pump (1) and the solid phase extraction device.

5. The novel reagent sample pretreatment device according to any one of claims 1 to 3, characterized in that: the filler column comprises a silica gel filler column (5), an alumina filler column (6) and an activated carbon filler column (7).

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