CN203315794U - Novel solid phase extraction device - Google Patents

Abstract

The utility model discloses a novel solid-phase extraction device, which comprises a glass cylinder, the glass cylinder is covered with a panel, the panel is provided with two rows of extraction channels, the glass cylinder is provided with a test tube rack, and the test tube rack is provided with a The upper hole for installing the collection tube is characterized in that a waste liquid collection chamber is provided between the bottom of the test tube rack and the bottom of the glass cylinder, and the bottom of the test tube rack is provided with a lower hole that communicates with the waste liquid collection chamber. The diameter of the lower hole is Smaller than the diameter of the collection tube, the waste liquid droplets can pass through the upper and lower holes of the test tube rack and enter the waste liquid collection chamber. Liquid discharge pipe, the front and back rows of extraction channels are arranged horizontally and staggered, and the back row of extraction channels is 10mm higher than the front row of extraction channels. Observation and convenient for experimenters to operate.

Description

A new type of solid phase extraction device

technical field

The utility model relates to a novel solid phase extraction device.

Background technique

Solid-phase extraction (Solid-Phase Extraction, referred to as SPE) uses the difference in the ability of the analyte to be adsorbed in different media to purify the target substance, effectively separate the target substance from the interfering components, and greatly enhance the detection of the analyte, especially the trace amount. The detection ability of the analyte improves the recovery rate of the tested sample. Since the advent of SPE technology in the late 1970s, due to its low solvent usage, simple operation, high selectivity, and good reproducibility, it has developed into a powerful tool for separating and concentrating trace analysis substances in various samples. , Widely used in food inspection, environmental monitoring, medicine and health, biochemistry and other fields, showing good development prospects. The solid-phase extraction process mainly includes steps such as activation, sample addition, rinsing, and elution.

The existing solid-phase extraction device is mainly composed of a panel, a channel, a flow control valve, a glass cylinder, a collection test tube rack, and a vacuum pump. The upper end of the glass cylinder is covered with a panel for fixing the solid-phase needle sleeve, and two rows of symmetrical The extraction channel includes a flow control valve, a needle sleeve and a needle tube. The flow control valve is externally connected to the eluent container. Below each extraction channel is a collection tube for collecting the extracted extract. The collection tube is inserted into the test tube rack , the test tube rack rests directly on the bottom of the glass cylinder. Therefore, the solid-phase extraction waste liquid tank and the test tube for collecting the extract cannot be placed at the same time. It takes a process to change the waste liquid tank from the activation of the solid-phase needle sleeve to the extraction liquid, which makes continuous solid-phase extraction difficult. At the same time, two rows With symmetrical extraction channels, it is difficult to observe the flow rate of the rear extraction channel directly behind during operation; currently, waste liquid is disposed of by placing a waste liquid collection cylinder or discharging it through a suction filter bottle. It is troublesome to put in and take out the waste liquid tank, and the suction filter bottle takes up more space. When the waste is discharged, the test tube rack must be taken out of the glass tank and put in again when collecting, which is cumbersome to operate.

Contents of the invention

The technical problem to be solved by the utility model is to provide an extraction channel that can directly collect waste liquid and discharge waste liquid.

A new type of solid phase extraction device arranged in a three-dimensional cross arrangement.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a novel solid phase extraction device, comprising a glass cylinder body, the glass cylinder body is covered with a panel, and the panel is provided with two rows of extraction channels, A test tube rack is arranged in the glass cylinder body, and an upper hole for installing a collection tube is arranged on the test tube rack, and a waste liquid is arranged between the bottom of the test tube rack and the bottom of the glass cylinder body. A collection chamber, the bottom of the test tube rack is provided with a lower hole communicating with the waste liquid collection chamber, the diameter of the lower hole is smaller than the diameter of the collection tube, and the diameter of the glass cylinder is The bottom is provided with a drain pipe for draining the waste liquid in the waste liquid collection chamber out of the glass cylinder.

The extraction channels described in the front and rear rows are staggered horizontally, and the extraction channels described in the rear row are 10mm higher than the extraction channels described in the front row. Not only can the flow conditions of all extraction channels be observed, but also it is convenient to add liquid to the rear extraction channels, and the operation is simple.

The extraction channel includes a needle sleeve and a needle tube. The upper opening of the needle sleeve in the front row is 10 mm higher than the panel, and the upper opening of the needle sleeve in the rear row is 20 mm higher than the panel. The upper end of the needle sleeve is provided with a flow control valve. The flow control valve will not touch the panel or be too close to the panel when it is turned, so that the extraction channel is firmly fixed on the panel, and it is not easy to shake when the valve is rotated.

The diameter of each needle tube sleeve above the panel is 15mm and the diameter of the part embedded in the panel is 8mm. Make the extraction channel fixed more firmly.

The needle tube is made of stainless steel. The stainless steel needle tube is used instead of the plastic pipeline, which greatly reduces the consumption caused by the deformation of the plastic pipeline.

Four 40-60mm supporting columns are correspondingly arranged between the bottom four corners of the test tube rack and the bottom of the glass cylinder. Used to fix and form a waste liquid collection chamber for containing waste liquid.

The middle part of the side wall of the glass cylinder body is provided with a vacuum pumping pipe, and a vacuum pump is provided at the vacuum pumping pipe. A vacuum pump is used to form a negative pressure in the glass cylinder, and then the flow rate is controlled by adjusting the flow control valve on the needle sleeve, and the solid phase extraction column is inserted into the hole above the flow control valve.

The drain pipe is provided with a waste liquid control valve.

Compared with the prior art, the utility model has the advantages that: the utility model is a new type of solid phase extraction device, including a glass cylinder, a panel, two rows of extraction channels and a test tube rack, and the test tube rack is provided with a collection tube. The upper hole, the bottom of the test tube rack and the bottom of the glass cylinder are provided with a waste liquid collection chamber, the bottom of the test tube rack is provided with a lower hole communicating with the waste liquid collection chamber, and the bottom of the glass cylinder is provided with a waste liquid collection chamber. The waste liquid in the liquid collection chamber is discharged out of the drain pipe outside the glass cylinder. The waste liquid flowing out of the solid-phase needle sleeve of this device can pass through the upper hole and the lower hole on the test tube rack through the extraction channel, and drip into the bottom of the glass cylinder for collection. Liquid tank or suction filter bottle, when collecting the extraction liquid, just place the collection tube directly on the test tube rack, and directly arrange the needle tube sleeves set at the same time up and down, left and right, so that it is convenient to observe the flow rate of the extraction channel in the back row during the extraction operation And it is convenient for experimenters to operate. The upper hole and the lower hole on the test tube rack, the upper hole is used to fix the test tube, the lower hole is used to support the bottom of the test tube, the waste liquid can pass through the upper and lower holes and enter the waste liquid collection chamber.

Description of drawings

Fig. 1 is the structural representation of the solid phase extraction device of the present utility model.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

specific embodiment

The utility model is a new type of solid phase extraction device, as shown in Figure 1, comprising a glass cylinder 1, the glass cylinder 1 is covered with a panel 2, and the panel 2 is provided with two rows of extraction channels 3, and the glass cylinder 1 is provided with There is a test tube rack 4, the upper hole 6 for installing the collection tube 5 is arranged on the test tube rack 4, a waste liquid collection chamber 7 is arranged between the bottom of the test tube rack 4 and the bottom of the glass cylinder 1, and the bottom of the test tube rack 4 is provided with There is a lower hole 8 communicating with the waste liquid collection chamber 7, and the bottom of the glass cylinder 1 is provided with a drain pipe 9 for discharging the waste liquid in the waste liquid collection chamber 7 out of the glass cylinder 1.

In this specific embodiment, as shown in Figure 2, the two rows of extraction channels 3 in the front and rear are horizontally staggered and the extraction channels 3 in the rear row are 10mm higher than the extraction channels 3 in the front row; The upper opening of the needle tube cover 32 is 10mm higher than the panel 2, and the upper opening of the rear needle tube cover 32 is 20mm higher than the panel 2. The upper end of the needle tube cover 32 is provided with a flow control valve 31. Each needle sleeve 32 has a diameter of 15 mm above the panel 2 and a diameter of 8 mm in the part embedded in the panel 2 . Needle tube 33 adopts stainless steel needle tube.

In this specific embodiment, as shown in FIG. 1 , four support columns 10 of 40-60 mm are respectively arranged between the four corners of the bottom of the test tube rack 4 and the bottom of the glass cylinder 1 . The middle part of the side wall of the glass cylinder body 1 is provided with a vacuum suction pipe 11, and a vacuum pump (not shown in the figure) is provided at the vacuum suction pipe 11; a waste liquid control valve 12 is provided on the drain pipe 9.

The foregoing embodiments are further descriptions of the utility model, and the protection scope of the utility model shall be determined by the claims.

Claims (8)

1. a novel solid-phase extraction device, comprise the glass cylinder body, be coated with panel on described glass cylinder body, be provided with two rows on described panel and extract passage, be provided with rack for test tube in described glass cylinder body, on described rack for test tube, be provided with for the upper hole of collecting pipe is installed, it is characterized in that: between the bottom of the bottom of described rack for test tube and described glass cylinder body, be provided with the waste collection chamber, the bottom of described rack for test tube is provided with the lower hole communicated with described waste collection chamber, the diameter in described lower hole is less than the diameter of described collecting pipe, the bottom of described glass cylinder body is provided with for the waste liquid by described waste collection chamber and discharges the external discharging tube of glass jar.

2. according to a kind of novel solid-phase extraction device claimed in claim 1, it is characterized in that: the front and back two described extraction passage of row laterally be crisscross arranged and after arrange described extraction passage than the high 10mm of front-seat described extraction passage.

3. a kind of novel solid-phase extraction device according to claim 2, it is characterized in that: described extraction passage comprises needle tubing cover and needle tubing, the upper end open of front-seat described needle tubing cover exceeds described panel 10mm, the upper end open of the described needle tubing cover of rear row exceeds described panel 20mm, and the upper end of described needle tubing cover is provided with flow control valve.

4. a kind of novel solid-phase extraction device according to claim 3 is characterized in that: the diameter that each described needle tubing is enclosed within described panel top is that 15mm and its diameter that embeds described faceplate part are 8mm.

5. a kind of novel solid-phase extraction device according to claim 3, is characterized in that: described needle tubing employing stainless steel needle tubing.

6. a kind of novel solid-phase extraction device according to claim 1, is characterized in that: be correspondingly provided with four 40-60mm support columns between the bottom of four jiaos of the bottoms of described rack for test tube and described glass cylinder body.

7. according to the described a kind of novel solid-phase extraction device of any one in claim 1-6, it is characterized in that: the sidewall middle part of described glass cylinder body is provided with vacuum exhaust pipe, and described vacuum exhaust pipe place is provided with vavuum pump.

8. according to the described a kind of novel solid-phase extraction device of any one in claim 1-6, it is characterized in that: be provided with the removal waste fluid by-pass valve control on described discharging tube.

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