A solid phase extraction instrument facilitating adjustment of gas flow

Abstract

The utility model discloses a kind of solid phase extraction instruments of gas flow is easily adjusted, including base, the upper end of base is fixedly installed with four columns, the upper end of column is fixedly installed with mounting seat, air pump is installed in mounting seat, and the gas outlet of air pump is installed with several hoses;Fixed support is arranged at base upper portion interval, fixed support is fixedly connected with column, and test tube rack is installed in the two sides of fixed support;Fixed support upper portion interval is provided with movable support, and lifting structure is installed in the two sides of fixed support, and extraction support is installed in the two sides of movable support, extraction column is fixedly installed in extraction support upper portion opposite test tube jack, and ball valve is installed in the lower end of extraction column;Top seat is arranged at movable support upper portion interval, and top seat is fixedly connected with column, and regulating valve is installed in top seat opposite extraction column, and the upper end of regulating valve is fixedly connected with hose, and lifting structure drives extraction column and regulating valve compression tight.This solid phase extraction instrument has the advantages of being easy to assemble, simple to operate, stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of solid phase extraction instrument technology, and in particular to a solid phase extraction instrument with easily adjustable gas flow rate. Background Technology

[0002] Solid-phase extraction (SPE) equipment can be divided into automatic SPE apparatus and manual SPE devices. Manual SPE devices can be further divided into two main categories: negative pressure and positive pressure. Positive pressure SPE devices use nitrogen or air as the power source for the liquid to pass through the solid-phase extraction column. Currently used positive pressure SPE equipment cannot adjust the gas flow rate, resulting in a uniform liquid flow rate during the extraction process, which cannot meet the requirements of different extraction flow rates. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a solid phase extraction instrument that is easy to assemble, simple to operate, stable and reliable, and easy to adjust the gas flow rate.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A solid-phase extraction instrument with adjustable gas flow rate includes a base, four columns fixedly mounted on the upper end of the base, the four columns being arranged in a rectangular pattern, a mounting base fixedly mounted on the upper end of the four columns, an air pump installed inside the mounting base, and several hoses installed at the air outlet of the air pump, with solenoid valves installed on the hoses.

[0006] Fixed supports are provided at intervals above the base. The fixed supports are fixedly connected to the column. Test tube racks are installed on both sides of the fixed supports. The test tube racks are provided with test tube insertion holes.

[0007] Movable supports are spaced apart above the fixed support. A slider is fixedly installed on the column and is fixedly connected to the movable support. Lifting structures for driving the movable supports to rise and fall are installed on both sides of the fixed support. Extraction supports are installed on both sides of the movable support. An extraction column is fixedly installed on the extraction support opposite the test tube insertion hole. A ball valve is installed at the lower end of the extraction column and a liquid outlet is provided at the lower end of the ball valve.

[0008] The movable support is provided with a top seat at intervals above it. The top seat is fixedly connected to the column. A regulating valve is installed on the top seat facing the extraction column. The upper end of the regulating valve is fixedly connected to the hose. The lifting structure drives the extraction column to press against the regulating valve.

[0009] In this process, the test tube rack is placed on the fixed support, the test tubes are inserted into the test tube sockets, the extraction support is placed on the movable support, liquid and filler are added to the extraction column, and the lifting structure moves the extraction support upward, pressing the extraction column against the regulating valve. The air pump starts, generating positive pressure, which extracts the liquid in the extraction column. The ball valve is closed when adding liquid or filler to the extraction column and opened during extraction. The flexible hose facilitates adjustment of the regulating valve, and the solenoid valve allows for the opening and closing of the hose. The regulating valve adjusts the gas flow rate, thus achieving different extraction flow rate requirements.

[0010] The lifting structure includes a nut fixedly mounted on a fixed bracket, a screw threadedly connected to the nut, the upper end of the screw being connected to a movable bracket via a bearing, and a handle fixedly attached to the lower end of the screw.

[0011] The fixed support and the movable support are both I-shaped, and slots are provided on both sides of the fixed support and both sides of the movable support. The slots are U-shaped, and the test tube rack and extraction support are respectively inserted into the slots of the fixed support and the movable support.

[0012] The top seat is fixedly installed with a pressure block opposite the extraction column. The upper end of the extraction column is provided with a protruding edge. The pressure block is fixedly installed with an air outlet cylinder that can be inserted into the extraction column.

[0013] The regulating valve includes a fixed plate and a rotating plate with identical structures. The fixed plate and the rotating plate have three air outlets facing each other. The upper end of the air outlet cylinder is located above the pressure block. The top seat has a clearance hole with a diameter larger than that of the air outlet cylinder facing the air outlet cylinder. The outer periphery of the air outlet cylinder is provided with a rib. The fixed plate is fixedly installed on the upper end of the air outlet cylinder. The outer side of the air outlet cylinder is rotatably fitted with a rotating cylinder. The inner side of the rotating cylinder has an annular groove that rotatably fits with the rib of the air outlet cylinder. The rotating plate is fixedly installed inside the rotating cylinder and slides against the fixed plate. The upper end of the rotating cylinder is fixedly connected to a hose.

[0014] The outer side of the rotating drum is fixedly fitted with anti-slip texture.

[0015] In summary, this solid-phase extraction instrument, which facilitates gas flow adjustment, has the advantages of easy assembly, simple operation, and stable reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a solid-phase extraction instrument that facilitates gas flow adjustment, as described in this utility model.

[0017] Figure 2 for Figure 1 An exploded view of part of the structure.

[0018] Figure 3 This is a schematic diagram of a fixed plate and a regulating valve. The rotating cylinder and plate of one of the regulating valves are not shown.

[0019] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0020] Figure 5 for Figure 3 A diagram showing another location.

[0021] Figure 6 This is a schematic diagram of the rotating drum and rotating plate. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] like Figure 1-6 As shown, a solid phase extractor with adjustable gas flow rate includes a base 1, four columns 2 are fixedly installed on the upper end of the base, the four columns are arranged in a rectangular shape, a mounting base 3 is fixedly installed on the upper end of the four columns, an air pump is installed in the mounting base, and several hoses 4 are installed at the air outlet of the air pump, and a solenoid valve is installed on the hoses.

[0024] The base is provided with fixed brackets 5 at intervals above it. The fixed brackets are fixedly connected to the column. Test tube racks 6 are installed on both sides of the fixed brackets. The test tube racks are provided with test tube insertion holes.

[0025] Movable supports 8 are spaced apart above the fixed support. A slider is fixedly installed on the column and is fixedly connected to the movable support. Lifting structures for driving the movable supports to rise and fall are installed on both sides of the fixed support. Extraction supports 9 are installed on both sides of the movable support. An extraction column 10 is fixedly installed on the extraction support opposite the test tube insertion hole. A ball valve 11 is installed at the lower end of the extraction column and a liquid outlet 12 is provided at the lower end of the ball valve.

[0026] A top seat 13 is provided at intervals above the movable support. The top seat is fixedly connected to the column. A regulating valve 14 is installed on the top seat facing the extraction column. The upper end of the regulating valve is fixedly connected to the hose. The lifting structure drives the extraction column to press against the regulating valve.

[0027] In this process, the test tube rack is placed on the fixed support, test tube 7 is inserted into the test tube socket, the extraction support is placed on the movable support, liquid and filler are added to the extraction column, and the lifting structure moves the extraction support upward, pressing the extraction column against the regulating valve. The air pump starts, generating positive pressure, which extracts the liquid in the extraction column. The ball valve is closed when adding liquid or filler to the extraction column and opened during extraction. The flexible hose facilitates adjustment of the regulating valve, and the solenoid valve allows for the opening and closing of the hose. The regulating valve adjusts the gas flow rate, thus achieving different extraction flow rate requirements.

[0028] In implementation, the lifting structure includes a nut fixedly mounted on a fixed bracket, with a screw 15 threadedly connected to the nut. The upper end of the screw is connected to a movable bracket via a bearing, and a handle is fixed to the lower end of the screw. When adjusting the position of the movable bracket, rotating the handle rotates the screw, thus raising or lowering the movable bracket. During extraction, the lifting structure moves the movable bracket upwards, causing the extraction column to press tightly against the fixed plate, achieving a seal and improving the extraction effect.

[0029] In implementation, both the fixed support and the movable support are I-shaped, with slots on both sides of the fixed support and both sides of the movable support. These slots are U-shaped, and the test tube rack and extraction support are respectively inserted into the slots of the fixed support and the movable support. This facilitates the installation and disassembly of the test tube rack and extraction support.

[0030] In practice, a pressure block 16 is fixedly installed on the top seat opposite the extraction column. A protruding flange 17 is provided on the upper end of the extraction column. An air outlet 18 is fixedly installed on the pressure block and can be inserted into the extraction column. A seal is achieved by pressing the pressure block and the protruding flange together.

[0031] In implementation, the regulating valve includes a fixed plate 19 and a rotating plate 20 with identical structures. The fixed plate and the rotating plate have three air outlet holes 21 facing each other. The upper end of the air outlet cylinder is located above the pressure block. The top seat has a clearance hole with a diameter larger than that of the air outlet cylinder facing the air outlet cylinder. The outer periphery of the air outlet cylinder is provided with a rib 22. The fixed plate is fixedly installed on the upper end of the air outlet cylinder. The outer side of the air outlet cylinder is rotatably fitted with a rotating cylinder 23. The inner side of the rotating cylinder has an annular groove that rotatably fits with the rib of the air outlet cylinder. The rotating plate is fixedly installed inside the rotating cylinder and slides against the fixed plate. The upper end of the rotating cylinder is fixedly connected to a hose.

[0032] In this way, the gas flow rate can be adjusted by regulating the valve during the actual extraction process. During adjustment, rotating the drum causes the rotating plate to rotate, and the gas flow rate is adjusted by the relative position of the rotating plate and the fixed plate. The gas flow rate is maximum when the rotating plate and the gas outlet on the fixed plate are directly aligned; when misaligned, gas does not pass through, and extraction does not occur. This structure is simple and easy to use. The drum is press-fitted onto the outside of the gas outlet cylinder, and the drum can rotate relative to the gas outlet cylinder. The ribs and annular grooves improve installation stability.

[0033] During implementation, anti-slip texture 24 is fixedly installed on the outer side of the rotating drum to facilitate its rotation.

[0034] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A solid-phase extraction instrument with easily adjustable gas flow rate, characterized in that, Includes a base, on the upper end of which four columns are fixedly installed. The four columns are arranged in a rectangular shape. Mounting bases are fixedly installed on the upper ends of the four columns. An air pump is installed inside the mounting base. Several hoses are installed at the air outlet of the air pump. Solenoid valves are installed on the hoses. Fixed supports are provided at intervals above the base. The fixed supports are fixedly connected to the column. Test tube racks are installed on both sides of the fixed supports. The test tube racks are provided with test tube insertion holes. Movable supports are spaced apart above the fixed support. A slider is fixedly installed on the column and is fixedly connected to the movable support. Lifting structures for driving the movable supports to rise and fall are installed on both sides of the fixed support. Extraction supports are installed on both sides of the movable support. An extraction column is fixedly installed on the extraction support opposite the test tube insertion hole. A ball valve is installed at the lower end of the extraction column and a liquid outlet is provided at the lower end of the ball valve. The movable support is provided with a top seat at intervals above it. The top seat is fixedly connected to the column. A regulating valve is installed on the top seat facing the extraction column. The upper end of the regulating valve is fixedly connected to the hose. The lifting structure drives the extraction column to press against the regulating valve.

2. A solid-phase extraction apparatus for easy adjustment of gas flow rate according to claim 1, characterized in that, The lifting structure includes a nut fixedly mounted on a fixed bracket, a screw threadedly connected to the nut, the upper end of the screw being connected to a movable bracket via a bearing, and a handle fixedly attached to the lower end of the screw.

3. A solid-phase extraction apparatus for easy adjustment of gas flow rate according to claim 2, characterized in that, Both the fixed support and the movable support are I-shaped, and slots are provided on both sides of the fixed support and both sides of the movable support. The slots are U-shaped, and the test tube rack and extraction rack are respectively inserted into the slots of the fixed support and the movable support.

4. A solid-phase extraction apparatus for easy adjustment of gas flow rate according to claim 3, characterized in that, The top seat is fixedly installed with a pressure block facing the extraction column. The upper end of the extraction column is provided with a protruding edge. The pressure block is fixedly installed with an air outlet cylinder, which can be inserted into the extraction column.

5. A solid-phase extraction apparatus for easy adjustment of gas flow rate according to claim 4, characterized in that, The regulating valve includes a fixed plate and a rotating plate with identical structures. The fixed plate and the rotating plate have three air outlets facing each other. The upper end of the air outlet cylinder is located above the pressure block. The top seat has a clearance hole with a diameter larger than that of the air outlet cylinder facing the air outlet cylinder. The outer periphery of the air outlet cylinder is provided with a rib. The fixed plate is fixedly installed on the upper end of the air outlet cylinder. The outer side of the air outlet cylinder is rotatably fitted with a rotating cylinder. The inner side of the rotating cylinder has an annular groove that rotatably fits with the rib of the air outlet cylinder. The rotating plate is fixedly installed inside the rotating cylinder and slides against the fixed plate. The upper end of the rotating cylinder is fixedly connected to a hose.

6. A solid-phase extraction apparatus for easy adjustment of gas flow rate according to claim 5, characterized in that, The outer side of the rotating drum is fixedly fitted with anti-slip texture.

Images