CN219743989U - solid phase extraction device - Google Patents

Abstract

The utility model relates to the field of experimental equipment, in particular to a solid phase extraction device which comprises a plurality of solution pipes, a plurality of sample pipes, a plurality of drainage pipes, a seat part and a supporting connecting part, wherein the plurality of drainage pipes are vertically arranged on the seat part; the plurality of sample tubes are vertically arranged on the support connecting piece, or the plurality of solution tubes are vertically arranged on the support connecting piece. Therefore, through the scheme, the plurality of sample tubes or the plurality of solution tubes are integrated into one module, and the problem of troublesome operation caused by the need of plugging one by one in the prior art is solved.

Description

Solid phase extraction device

Technical Field

The utility model relates to the field of experimental equipment, in particular to a solid phase extraction device.

Background

The existing solid phase extraction device comprises a vacuum box, wherein a box cover is arranged at the top of the vacuum box, a plurality of vertically arranged drainage tubes are fixed on the box cover, and the upper ends and the lower ends of the drainage tubes are respectively positioned on the upper side and the lower side of the box cover. The top of each drainage tube is detachably inserted with a vertically arranged sample tube, the sample tube is filled with filler, and the top of the sample tube is detachably inserted with a vertically arranged solution tube. The vacuum box is connected with a vacuum pump, so that the vacuum box can be in a negative pressure state.

When the existing solid-phase extraction instrument is used, along with the test, liquid in a solution pipe downwards flows into a sample pipe under the action of negative pressure of a vacuum box, after the physical change of the solution and a filler, the liquid is sucked into the vacuum box through a drainage tube, the liquid can be continuously gathered in the vacuum box, when the liquid reaches a certain depth, the instrument is required to be manually closed, then the box cover of the vacuum box is taken down, and the liquid in the vacuum box is poured out from the top of the vacuum box and then the test is continued.

Because a plurality of solution pipes set up mutually independently, a plurality of sample pipes set up mutually independently, consequently upwards move the vacuum box case lid, connect unstable solution pipe, spare parts such as sample pipe etc. and take place to drop etc. easily on the case lid to operation such as the clearance of liquid in the vacuum box brings inconvenience, drop of solution pipe and sample pipe simultaneously, probably causes sample and equipment to damage.

On the other hand, the vacuum state of the vacuum box can disappear when the liquid is removed, and the vacuum box needs to be vacuumized again when the test is carried out later, so that inconvenience is brought to operation.

In addition, before the device is used, when the solution tube and the sample tube are connected, the solution tube and the sample tube are required to be inserted one by one, and when the sample tube and the drainage tube are connected, the solution tube and the drainage tube are also required to be inserted one by one, so that the operation is troublesome.

Disclosure of Invention

The utility model aims to provide a solid-phase extraction device to solve the problem of troublesome operation caused by the need of plugging one by one in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the solid phase extraction device comprises a plurality of solution pipes, a plurality of sample pipes, a plurality of drainage pipes, a seat part and a supporting connecting part, wherein the plurality of drainage pipes are vertically arranged on the seat part; the plurality of sample tubes are vertically disposed on the support connector.

The seat member is used for supporting and fixing a plurality of drainage tubes. The support connecting piece in this scheme is arranged in supporting and connecting a plurality of sample tubes, and a plurality of sample tubes and support connecting piece are whole to be a module, like this when inserting the sample tube on the drainage tube, through getting, put the operation to this module is whole to can realize getting, put the operation of a plurality of sample tubes, can make a plurality of sample tubes insert simultaneously on a plurality of drainage tubes, easy operation is convenient, and a plurality of sample tubes need not to insert one by one on a plurality of drainage tubes.

In addition, when the device is moved in the prior art, the sample tubes are easy to separate from the drainage tube and fall off, because the plurality of sample tubes are independent and have no interconnection relationship, and when part of the sample tubes and the drainage tube are not stable in insertion, the sample tubes which are not stable in insertion are easy to fall off. In this scheme, the support connecting piece connects a plurality of sample tubes as a whole, and a plurality of sample tubes insert behind the drainage tube, and a plurality of drainage tubes restrict each other, restriction through the connection of support connecting piece, and the connection of every sample tube and drainage tube all plays the holistic fixed restriction of module, even if there is individual sample tube and drainage tube not to insert steady like this, because other sample tubes and drainage tube are in the state of inserting steady, so when moving this device, individual sample tube that does not insert steady is difficult for dropping from the drainage tube.

In order to achieve the above purpose, the present utility model further adopts the following technical scheme: the solid phase extraction device comprises a plurality of solution pipes, a plurality of sample pipes, a plurality of drainage pipes, a seat part and a supporting connecting part, wherein the plurality of drainage pipes are vertically arranged on the seat part; the plurality of solution pipes are vertically arranged on the supporting connecting piece.

The seat member is used for supporting and fixing the multiple drainage tubes. The support connecting piece in this scheme is arranged in supporting and connecting a plurality of solution pipes, and a plurality of solution pipes and support connecting piece are whole to be a module, like this when inserting the solution pipe on the sample pipe, through getting, put the operation to this module is whole to can realize getting, put the operation of a plurality of solution pipes, can make a plurality of solution pipes insert simultaneously on a plurality of sample pipes, easy operation is convenient, and a plurality of solution pipes need not to insert one by one on a plurality of sample pipes.

In addition, in the prior art, when the device is moved, the solution pipes are easy to separate from the sample pipes and fall off, because the plurality of solution pipes are independent and have no connection relationship, and when part of the solution pipes and the sample pipes are not stable in insertion, the solution pipes which are not stable in insertion are easy to fall off. In this scheme, the support connecting piece connects a plurality of solution pipes as a whole, and a plurality of solution pipes are restrained each other, are restricted through the connection of support connecting piece after inserting the sample pipe on, and the connection of every solution pipe and sample pipe all plays the effect of this holistic fixed restriction of module, even if there is individual solution pipe and sample pipe to insert steadily like this, because other solution pipes and sample pipe are in the state of inserting steadily, so when moving this device, do not insert steady solution pipe and be difficult for dropping from the drainage tube alone.

In order to achieve the above purpose, the present utility model further adopts the following technical scheme: the solid phase extraction device comprises a plurality of solution pipes, a plurality of sample pipes, a plurality of drainage pipes, a seat piece, a first support connecting piece and a second support connecting piece, and a plurality of drainage pipes are vertically arranged on the seat piece; the plurality of solution pipes are vertically arranged on the first supporting connecting piece, and the plurality of sample pipes are vertically arranged on the second supporting connecting piece.

The seat member of this scheme is used for supporting and fixing a plurality of sample tubes. A plurality of solution pipes and first support connecting piece in this scheme wholly are a module, and first support connecting piece is used for supporting and connecting a plurality of solution pipes, and a plurality of sample pipes and second support connecting piece wholly are another module, and the second support connecting piece is used for supporting and connecting a plurality of sample pipes. Thus, the plurality of sample tubes and the plurality of solution tubes are modularized respectively to form a whole. Whether when inserting the solution pipe on the sample pipe, when still inserting the drainage tube to the sample pipe, through getting respectively to two module integers, put the operation to can realize getting of a plurality of solution pipes, put the operation and get of a plurality of sample pipes put the operation, can make a plurality of solution pipes insert simultaneously on a plurality of sample pipes, a plurality of sample pipes insert simultaneously on a plurality of drainage tubes, easy operation is convenient, a plurality of solution pipes need not to insert one by one on a plurality of sample pipes, a plurality of sample pipes need not to insert one by one on a plurality of drainage tubes.

In addition, this scheme is through linking into whole a plurality of solution pipes to and through linking into whole a plurality of sample pipes, when handling this device, the solution pipe is inserted on the sample pipe and is difficult for droing, and the sample pipe is inserted on the drainage tube and is difficult for droing.

Preferably, as an improvement, the device further comprises a vacuum collecting box for collecting liquid discharged by the drainage tube, a liquid inlet is arranged on the vacuum collecting box, and a vacuum pump is connected to the vacuum collecting box. Therefore, negative pressure is generated in the vacuum collecting box, so that liquid in the solution tube enters the sample tube, flows into the drainage tube from the sample tube, finally enters the vacuum collecting box from the drainage tube, and the liquid is collected by the vacuum collecting box. The vacuum collecting box is used for collecting the extracted liquid, and the vacuum collecting box can be provided with a large volume so as to accommodate more liquid.

Preferably, as an improvement, the inside of the seat member is provided with a collecting cavity, the bottom ends of the plurality of drainage tubes are inserted into the collecting cavity, and a connecting pipe is connected between the seat member and the liquid inlet. From this, the liquid that flows out from a plurality of drainage tubes enters into and gathers the chamber and be collected, and the seat piece has played the effect of collecting liquid, and liquid is unified again to enter into the vacuum collecting box through the connecting pipe, need not to set up many connecting pipes like this and connect respectively vacuum collecting box and a plurality of drainage tubes, has simplified the pipeline.

Preferably, as an improvement, connecting pipes are connected between the bottom ends of the plurality of drainage pipes and the liquid inlet. Of course, the vacuum collection tank and the plurality of drainage tubes may be connected by a plurality of connection pipes, respectively.

Preferably, as an improvement, the vacuum collecting box is provided with an air inlet, the air inlet is provided with a first valve, the vacuum collecting box is provided with a liquid outlet, and the liquid outlet is provided with a second valve. Thus, in the vacuum collection box, under the negative pressure state, the first valve and the second valve are both in a closed state, so that the vacuum collection box is kept in a vacuum state. When the liquid in the vacuum collecting box needs to be discharged, the first valve is opened, the air inlet is opened, so that the negative pressure in the vacuum collecting box is eliminated, and then the second valve is opened, so that the liquid in the vacuum collecting box is discharged through the liquid outlet. Therefore, through the scheme, the liquid in the vacuum collecting box is not required to be discharged in a manner of overturning the vacuum collecting box, and the operation is simple and convenient.

Preferably, as a modification, the liquid inlet is located at the top of the vacuum collection tank. Therefore, the liquid level in the vacuum collecting box is far away from the liquid inlet, and the phenomenon of suck-back can be avoided.

Preferably, as an improvement, the bottom ends of the solution tube and the sample tube are respectively provided with a sealing gasket. Therefore, when the solution tube is inserted into the sample tube, after the sample tube is inserted into the drainage tube, the sealing gasket seals the joint of the solution tube and the sample tube and the joint of the sample tube and the drainage tube, so that the tightness of the two joints is improved, and the liquid can smoothly flow under the action of negative pressure.

Preferably, as a modification, the length of the solution tube is at least 15cm, and the diameter of the solution tube is at most 2cm. From this, through set up the support connecting piece on the solution pipe, the length of solution pipe can set up longer, and the diameter of solution pipe can set up less, has realized the utilization in this device eminence space like this, under the prerequisite of guaranteeing the liquid feed volume, reduces the interval between the adjacent detection sample, can increase solution pipe quantity in certain horizontal space to the solid phase extraction carries out with high efficiency.

Drawings

FIG. 1 is a front cross-sectional view of a solid phase extraction device.

FIG. 2 is a schematic illustration of the connection of a solution tube to a sample tube.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the vacuum collection box comprises a seat part 1, a vacuum collection box 2, a pressure gauge 3, a negative pressure pipe 4, an exhaust pipe 5, a second valve 6, a liquid discharge pipe 7, an air inlet 8, a first valve 9, a connecting pipe 10, a first supporting connecting piece 11, a second supporting connecting piece 12, a first inserting part 13, a solution pipe 14, a sample pipe 15, a second inserting part 16, a drainage pipe 17, a flow regulating valve 18, a sealing gasket 19, a second inclined surface 20, a first inclined surface 21 and a plug 22.

An example is substantially as shown in figures 1-2 of the accompanying drawings: the solid phase extraction device comprises a seat 1, a vacuum collecting box 2, a plurality of solution pipes 14, a plurality of sample pipes 15 and a plurality of drainage pipes 17. The drainage tube 17 is provided with a rotary flow regulating valve 18.

The seat 1 in this embodiment is used for supporting and fixing a plurality of drainage tubes 17, and a plurality of drainage tubes 17 are fixed on the seat 1 vertically, and the top of drainage tube 17 is located the top at seat 1 top, and the specific fixed mode of drainage tube 17 and seat 1 is: the drainage tube 17 is vertically integrated into one piece or is adhered to the seat member 1, or the drainage tube 17 is vertically clamped on the seat member 1 in a clamping block and clamping groove matching mode, and the drainage tube 17 cannot vertically and automatically move on the seat member 1 in a clamping mode.

The seat member 1 may be a frame body or a seat body, and can support and fix the plurality of drainage tubes 17. In this embodiment, the base is preferable.

The vacuum collecting box 2 is provided with a liquid inlet, and the vacuum collecting box 2 is used for collecting liquid flowing out of the drainage tube 17, and is particularly provided with a liquid inlet: the inside of the seat part 1 is provided with a collecting cavity, the bottom ends of the plurality of drainage tubes 17 are inserted into the collecting cavity, and a connecting pipe 10 is connected between the seat part 1 and the liquid inlet. In this embodiment, the liquid discharged from the plurality of drainage pipes 17 is collected by the collection chamber, and then discharged into the vacuum collection tank 2 together by the connection pipe 10. The present embodiment realizes that one connection pipe 10 discharges the liquid discharged from the plurality of drainage pipes 17 into the vacuum collection tank 2 without the plurality of connection pipes 10 connecting the drainage pipes 17 and the vacuum collection tank 2, respectively.

Of course, in other embodiments, there may be multiple liquid inlets on the vacuum collection tank 2, and the bottom of each drainage tube 17 may be connected to one connecting tube 10, and the other end of the connecting tube 10 is connected to the liquid inlet again.

The vacuum collection box 2 is connected with a negative pressure pipe 4, the negative pressure pipe 4 is connected with a pressure gauge 3, the negative pressure pipe 4 is connected with an exhaust pipe 5, and the other end of the exhaust pipe 5 is connected to a vacuum pump. An air inlet 8 is arranged on the top of the vacuum collecting box 2, a first valve 9 is connected and arranged on the air inlet 8, a liquid outlet is arranged on the bottom of the vacuum collecting box 2, and a second valve 6 is connected and arranged on the liquid outlet.

The device further comprises a first supporting connecting piece 11 and a second supporting connecting piece 12, wherein a plurality of solution pipes 14 are vertically arranged on the first supporting connecting piece 11, and the concrete mode of the arrangement is as follows: the solution pipe 14 is vertically adhered to the first support connecting piece 11 or integrally formed on the first support connecting piece 11, or the solution pipe 14 is clamped on the first support connecting piece 11 and cannot automatically move vertically, no matter what connecting mode is adopted, the principle of connection is that the solution pipe 14 cannot automatically move vertically on the first support connecting piece 11.

A plurality of sample tubes 15 are vertically arranged on the second support connection 12. The connection between the sample tube 15 and the second support connector 12 is the same as the connection between the solution tube 14 and the first support connector 11, and will not be described in detail here.

The first support link 11 and the second support link 12 in this embodiment may be plate-like or frame-like in shape, and the first support link 11 and the second support link 12 are transparent for easy observation of the liquid level in the solution tube 14 and the sample tube 15 at the time of experiments.

Thus, with the present embodiment, the plurality of sample tubes 15 are inserted together on top of the plurality of drain tubes 17 by holding the second support connector 12, and then the plurality of solution tubes 14 are inserted together on top of the plurality of sample tubes 15 by holding the first support connector 11. Thus, the plurality of sample tubes 15 are not required to be inserted into the plurality of drainage tubes 17 independently, and the plurality of solution tubes 14 are not required to be inserted into the plurality of sample tubes 15 independently, so that the operation is simple and convenient.

In this embodiment, the solvent is contained in the solution tube 14, the filler is contained in the sample tube 15, during extraction, the first valve 9 and the second valve 6 are closed, the vacuum pump is started to generate negative pressure in the vacuum collecting box 2, the vacuum collecting box 2 generates suction to the collecting cavity through the connecting tube 10, the liquid in the solution tube 14 flows downwards into the sample tube 15 under the action of the negative pressure suction, the solvent and the filler undergo physical change, the liquid in the sample tube 15 continues to flow downwards into the drainage tube 17, and enters the collecting cavity from the drainage tube 17, the collecting cavity collects the liquid flowing out of different drainage tubes 17, and then the liquid in the collecting cavity enters the vacuum collecting box 2 through the connecting tube 10 to be collected.

In the extraction process, since the plurality of solution pipes 14 are connected into a whole through the first supporting connecting piece 11, after the use of the liquid in the solution pipes 14 is finished, the first supporting connecting piece 11 can be taken and placed, so that the plurality of solution pipes 14 can be replaced together, one by one, the replacement is not needed, and the operation is simple and convenient.

Similarly, since the plurality of sample tubes 15 are connected into a whole through the second support connecting piece 12, when the sample tubes 15 need to be replaced, the second support connecting piece 12 can be taken and placed, so that the plurality of sample tubes 15 can be replaced together without replacing one by one, and the operation is simple and convenient.

In order to make the solution tube 14 more stable on the sample tube 15, a slot is provided on the top of the second support connector 12, and a first insertion portion 13 is integrally provided on the bottom of the first support connector 11, and the first insertion portion 13 is inserted into the slot, thereby realizing stable connection of the first support connector 11 and the second support connector 12. Similarly, in order to make the sample tube 15 more stable on the drain tube 17, a slot is also provided on the top of the seat member 1, and a second insertion portion 16 is integrally provided on the bottom of the second support connecting member 12, and is inserted into the slot on the top of the seat member 1 through the second insertion portion 16, thereby realizing stable connection between the second support connecting member 12 and the seat member 1.

In order to improve the extraction efficiency, the occupation of the lateral space of the solution tube 14 is reduced, so that the number of the solution tubes 14 is large, the solution tube 14 can be lengthened in the vertical direction, that is, the length of the solution tube 14 is at least 15cm, and the diameter of the solution tube 14 can be reduced compared with the prior art, that is, the diameter of the solution tube 14 is at most 2cm. The occupation of the lateral volume of the individual solution tubes 14 is thereby reduced, so that the overall lateral volume can be reduced, while at the same time the longer length of the solution tubes 14 ensures that sufficient solution or more solution is available for extraction.

The vacuum collection tank 2 in this embodiment collects liquid, after extraction for many times, the liquid in the vacuum collection tank 2 may become more, at this time, the vacuum pump may be turned off, the first valve 9 may be opened, external gas enters the vacuum collection tank 2 through the gas inlet 8, the negative pressure environment inside the vacuum collection tank 2 disappears, then the second valve 6 may be opened, and the liquid in the vacuum collection tank 2 may be discharged through the liquid outlet and the liquid outlet pipe 7.

In order to avoid the liquid in the vacuum collection tank 2 from being sucked back into the connection pipe 10, a liquid inlet is provided at the top of the vacuum collection tank 2, so that the distance between the liquid inlet and the liquid level in the vacuum collection tank 2 can be increased.

In this embodiment, the bottom ends of the solution tube 14 and the sample tube 15 are respectively provided with a sealing pad 19, so that when the solution tube 14 is connected with the sample tube 15, and when the sample tube 15 is connected with the drainage tube 17, the sealing performance of the connection between the solution tube 14 and the sample tube 15 and the connection between the sample tube 15 and the drainage tube 17 can be increased, and no air leakage phenomenon occurs at the connection between the two connection positions. Taking the connection of the solution tube 14 and the sample tube 15 as an example: as shown in fig. 2, the top of the solution tube 14 is provided with the spigot 22, and the outer side of the spigot 22 is sleeved with the sealing pad 19 made of rubber, so that when the spigot 22 of the solution tube 14 is inserted into the top of the sample tube 15, the sealing pad 19 is pressed down by the gravity of the first supporting connecting piece 11, and the joint of the solution tube 14 and the sample tube 15 is better sealed by the sealing pad 19. In order to improve the tightness, the weight of the first support connection 11 may be increased. In addition, the lateral surface of spigot 22 is equipped with first inclined plane 21, and spigot 22's bottom is the tip, and the inner wall at sample cell 15 top is equipped with second inclined plane 20, and the pipe diameter at sample cell 15 top is biggest, and first inclined plane 21 and second inclined plane 20 mutually support, and spigot 22 inserts in the sample cell 15 like this after, through first inclined plane 21 and the cooperation of second inclined plane 20, first support connecting piece 11 pushes down solution pipe 14 for first inclined plane 21 and the more tight of laminating of second inclined plane 20, thereby also can improve the leakproofness. The structure and principle of the sealing of the junction of the sample tube 15 and the drain tube 17 are similar to those of the junction of the solution tube 14 and the sample tube 15 and will not be described in detail here.

The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (6)

1. The solid phase extraction device comprises a plurality of solution pipes, a plurality of sample pipes and a plurality of drainage pipes, and is characterized in that: the drainage tube is vertically arranged on the seat piece; the plurality of solution pipes are vertically arranged on the first support connecting piece, and the plurality of sample pipes are vertically arranged on the second support connecting piece; the top of the seat piece is provided with a slot, the bottom of the second support connecting piece is integrally provided with a second inserting part, and the second inserting part is inserted into the slot at the top of the seat piece;

the device also comprises a vacuum collecting box for collecting liquid discharged by the drainage tube, wherein a liquid inlet is arranged on the vacuum collecting box, and a vacuum pump is connected to the vacuum collecting box; the inside of seat spare is equipped with and gathers the chamber, and the bottom of a plurality of drainage tubes all inserts and gathers the chamber in, be connected with the connecting pipe between seat spare and the inlet.

2. The solid phase extraction device according to claim 1, wherein: connecting pipes are connected between the bottom ends of the drainage tubes and the liquid inlet.

3. The solid phase extraction device according to claim 1, wherein: the vacuum collecting box is provided with an air inlet, a first valve is arranged on the air inlet, the vacuum collecting box is provided with a liquid outlet, and the liquid outlet is provided with a second valve.

4. The solid phase extraction device according to claim 1, wherein: the liquid inlet is positioned at the top of the vacuum collecting box.

5. The solid phase extraction device according to claim 1, wherein: the bottom of solution pipe, the bottom of sample pipe all are equipped with sealed pad.

6. The solid phase extraction device according to claim 1, wherein: the length of the solution pipe is at least 15cm, and the diameter of the solution pipe is at most 2cm.