Extraction device for solid-phase extraction

Abstract

The utility model provides an extraction device for solid-phase extraction. The solid-phase extraction device comprises a bottom shell, an extraction shell, partition plates, supports, a flow guide pipe, a connecting pipe, a switching valve and an exhaust pipe, the extraction shell and the bottom shell are hollow shells arranged up and down, the partition plates are arranged in the extraction shell to form a plurality of partition cavities, the supports are arranged in the partition cavities, and the flow guide pipe is connected with the connecting pipe. The top of the extraction shell is provided with a plurality of flow guide pipes penetrating into the extraction shell, the bottom of the extraction shell is provided with a plurality of connecting pipes communicated with the extraction shell and the bottom shell, each partition cavity is correspondingly provided with a plurality of flow guide pipes and a connecting pipe, the bottom shell is internally provided with the switching valve, the side face of the bottom shell is provided with the exhaust pipe penetrating into the bottom shell, and the exhaust pipe is communicated with the bottom shell. One end of the switching valve is connected with all the connecting pipes, and the other end of the switching valve is connected with the exhaust pipe. The solid-phase extraction device provided by the utility model solves the problem.

Description

Technical Field

[0001] The utility model relates to the field of solid phase extraction, in particular to an extraction device for solid phase extraction. Background Art

[0002] Solid phase extraction uses solid adsorbents to adsorb target compounds in liquid samples, separate them from the sample matrix and interfering compounds, and then elute with an eluent or heat and desorb them to achieve the purpose of extracting target compounds. Most of the existing extraction devices using solid phase extraction are monomer structures, and it is impossible to achieve different extraction operations simultaneously with a single device. Utility Model Content

[0003] In order to solve the problem that the existing solid phase extraction device cannot realize the function of performing multiple extractions simultaneously, the utility model provides a solid phase extraction device that solves the above problem.

[0004] A solid phase extraction extraction device comprises a bottom shell, an extraction shell, a partition, a bracket, a guide tube, a connecting tube, a switching valve and an exhaust pipe, wherein the extraction shell and the bottom shell are hollow shells arranged up and down, the partition is arranged in the extraction shell to form a plurality of compartments, the bracket is built in the compartment, a plurality of guide tubes penetrating therein are arranged on the top of the extraction shell, a plurality of connecting tubes connecting the extraction shell and the bottom shell are arranged on the bottom, a plurality of guide tubes and one connecting tube are correspondingly arranged at each compartment, the switching valve is arranged in the bottom shell, the exhaust pipe penetrating into the bottom shell is arranged on the side, one end of the switching valve is connected to all the connecting tubes, and the other end is connected to the exhaust pipe.

[0005] In a preferred embodiment of the solid phase extraction extraction device provided by the utility model, the extraction shell is a cylindrical shell, which is arranged at an axial vertical angle, and the partitions are arranged vertically and radially inside to form a plurality of fan-shaped compartments of the same size. The top of the extraction shell is open and an extraction cover is arranged, which is in contact with the extraction shell and the partition, and a plurality of flow guide tubes are arranged in an annular shape on the extraction cover. The outer wall of the extraction shell is provided with a connection mechanism that can be detachably connected to the extraction cover.

[0006] In a preferred embodiment of the solid phase extraction extraction device provided by the utility model, the bottom shell is a cylindrical shell with a diameter smaller than that of the extraction shell, and is coaxially arranged at the bottom of the extraction shell at an axial vertical angle; a plurality of openings are arranged in an annular shape between the extraction shell and the bottom shell, and each compartment and the bottom shell are connected one by one. A plurality of connecting pipes pass through the plurality of openings arranged between the extraction shell and the bottom shell one by one, and a sealing mechanism is arranged between the connecting pipes and the openings. The bottom opening of the bottom shell has an opening size larger than that of the switching valve, and an annular bottom cover is arranged in the opening, and the opening size of the bottom cover is smaller than that of the switching valve, and the control end of the switching valve extends out from the opening of the bottom cover; a plurality of legs are arranged at the bottom of the bottom shell.

[0007] Compared with the prior art, the solid phase extraction device provided by the utility model divides the extraction shell into multiple independent compartments, and can operate some or all of the compartments according to specific sequences and vacuum levels. It can realize the function of performing different extraction operations simultaneously in a single device, meeting diverse operation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the extraction device of solid phase extraction. DETAILED DESCRIPTION

[0009] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0010] See also Figure 1 , is a schematic diagram of the structure of the solid phase extraction device 1 provided by the utility model. The accompanying drawings are for illustration only and are not drawn strictly according to the product structure, but do not affect the implementation of the present solution by those skilled in the art according to the contents recorded in the specification and the accompanying drawings.

[0011] The extraction device 1 for solid phase extraction includes a bottom shell 2, a bottom cover 21, an extraction shell 3, an extraction cover 31, a partition 4, a bracket 5, a flow guide tube 6, a connecting tube 7, a switching valve and an exhaust pipe 9. The switching valve includes a valve body 81 and a control end 82 for controlling its switching function.

[0012] The extraction shell 3 is a cylindrical shell with a relatively large diameter, which is arranged at an axial vertical angle. Its top edge is expanded outward to form a connecting edge, and an extraction cover 31 is arranged on the top. The center position of the bottom of the extraction cover 31 is inserted into the extraction shell 3, and the edge abuts against the connecting edge, and a handle is arranged at the center position of the top. The edge of the extraction cover 31 is connected to the connecting edge by screws.

[0013] The extracting shell 3 is radially and vertically provided with partitions 4 to form three fan-shaped compartments of the same size. The compartments are provided with brackets 5, each of which is provided with two vertical loading holes for placing extraction containers (not shown in the drawings).

[0014] The extraction cover 31 is provided with a circle of six flow guide tubes 6 penetrating the extraction cover 31 , which are inserted into the six extraction containers placed in the bracket 5 one by one. The bottom of the extraction cover 31 is provided with a sealing ring, which abuts against the extraction shell 3 and the partition 4 .

[0015] The bottom shell 2 is a cylindrical shell with a relatively small diameter, with an open top and formed integrally with the bottom of the extraction shell 3. It can also be understood that the top of the bottom shell 2 is closed. The bottom of the bottom shell 2 is provided with a relatively large opening, and a bottom cover 21 is screwed into the bottom shell 2 by screwing. The bottom shell 2 and the extraction shell 3 are coaxially arranged, and three through holes are provided between the two at positions close to the center of the circle, respectively connecting the three compartments with the bottom shell 2. A pipe joint is provided in each through hole.

[0016] A switching valve is placed in the bottom shell 2, and the size of its valve body 81 is slightly smaller than the size of the bottom opening of the bottom shell 2, that is, slightly smaller than the size of the bottom cover 21. The center opening of the bottom cover 21 allows the control end 82 of the switching valve to extend out, so that the switching valve can be operated from the outside. A handle is also provided at the bottom of the bottom cover 21, so that the bottom cover 21 can be rotated and disassembled by holding it.

[0017] The bottom of the bottom shell 2 is provided with a plurality of legs near the edge, so that the bottom of the bottom shell 2 is suspended, leaving space for convenient operation of the control end 82 of the switching valve. The switching valve is a common component, and its specific structure will not be described in detail here.

[0018] The valve body 81 includes three inlets and one outlet, the three inlets are connected to three pipe joints through pipes, and communicate with three compartments, and one outlet is connected to the exhaust pipe 9. The exhaust pipe 9 passes through the side wall of the bottom shell 2 and is connected to the vacuum equipment.

[0019] From the compartment, the pipe joint, the pipe connecting the pipe joint and the switching valve, the switching valve, the exhaust pipe 9 to the vacuum pumping equipment, this series of components are kept airtight.

[0020] When in use, first open the extraction cover 31, take out part or all of the bracket 5, place the extraction container containing the reagent on the bracket 5, and then put the whole into the compartment. Close the extraction cover 31, insert the flow guide tubes 6 into the extraction containers placed in the bracket 5 one by one, and tighten the screws between the extraction cover 31 and the connecting edge to ensure the airtightness of each compartment.

[0021] The switching valve is controlled to connect one or more specific compartments to the exhaust pipe 9, and the vacuum equipment is started to exhaust the above compartments to a suitable pressure. The switching valve is switched to connect another one or more compartments to the exhaust pipe 9 and exhaust the vacuum, and so on.

[0022] The above is the operation process of this device. The operation process of extraction is consistent with the conventional scheme, so it will not be repeated.

[0023] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A solid phase extraction device, characterized in that: It comprises a bottom shell, an extraction shell, a partition, a bracket, a flow guide pipe, a connecting pipe, a switching valve and an exhaust pipe, wherein the extraction shell and the bottom shell are hollow shells arranged up and down, the partition is arranged inside the extraction shell to form a plurality of compartments, the bracket is built into the compartment, a plurality of flow guide pipes penetrating therein are arranged on the top of the extraction shell, a plurality of connecting pipes connecting the extraction shell and the bottom shell are arranged on the bottom, a plurality of flow guide pipes and one connecting pipe are arranged correspondingly at each compartment, the switching valve is arranged inside the bottom shell, the exhaust pipe penetrating into the bottom shell is arranged on the side, one end of the switching valve is connected to all the connecting pipes, and the other end is connected to the exhaust pipe; The extraction shell is a cylindrical shell, which is arranged at an axial vertical angle, and the partitions are arranged vertically and radially inside to form a plurality of fan-shaped compartments with the same size; The top of the extraction shell is open and is provided with an extraction cover, which is in contact with the extraction shell and the partition plate, and a plurality of flow guide tubes are provided in an annular shape on the extraction cover; The outer wall of the extraction shell is provided with a connection mechanism which is detachably connected to the extraction cover; The bottom shell is a cylindrical shell with a diameter smaller than that of the extraction shell, and is coaxially arranged at the bottom of the extraction shell at an axial vertical angle; a plurality of openings are arranged in an annular shape between the extraction shell and the bottom shell, which are connected to each compartment and the bottom shell one by one; The plurality of connecting tubes pass through the plurality of openings provided between the extraction shell and the bottom shell in a one-to-one correspondence, and a sealing mechanism is provided between the connecting tubes and the openings; The bottom of the bottom shell is opened, and the opening size is larger than the size of the switching valve. An annular bottom cover is arranged in the opening, and the opening size of the bottom cover is smaller than the size of the switching valve. The control end of the switching valve extends out from the opening of the bottom cover; a plurality of supporting feet are arranged at the bottom of the bottom shell.

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