Multifunctional liquid collecting device

Abstract

The utility model provides a multifunctional liquid collecting device, which is characterized in that a collecting butt joint device and a water removal pipe plug are arranged on a support bracket, the lower end of the collecting butt joint device can be connected with collecting containers in various forms, an upper pipe for supplying solution can be selectively connected with the water removal pipe plug, the water removal pipe plug is connected with a water removal column, and the water removal column is connected with a lower pipe; the lower pipe is connected with an access port of the collection butt joint device; alternatively, an upper tube for supplying a solution is selectively directly connected to the access port of the collection docking device. According to the utility model, the switching between water removal of the collected object and no water removal can be quickly realized.

Description

Technical Field

[0001] The utility model relates to a multifunctional liquid collecting device for sample pre-treatment, in particular to a collecting device which needs to perform water removal treatment on the collected liquid. Background Art

[0002] In the solid phase extraction equipment using negative pressure, manual / semi-automatic equipment generally uses a vacuum pump to draw negative pressure in the collection bottle to make the eluent flow from the column / membrane to the collection bottle; while in the fully automatic equipment, the pressure in the bottle can be reduced by introducing a one-way valve to open the one-way valve, and the collection liquid enters the collection bottle. However, if the negative pressure is too low, it will cause the collection liquid to boil, thereby causing the loss of the target substance, and the one-way valve needs to be cleaned and maintained daily. When dirty samples are loaded, if the particles pass through the column / membrane and enter the one-way valve, the one-way valve will fail and leak. For the collection process of the above fully automatic / semi-automatic / manual solid phase extractors, the sealing of the collection bottle must be guaranteed, otherwise a certain vacuum cannot be formed and the eluent cannot reach the collection bottle. Good sealing requires a corresponding structure to ensure, and high design and processing requirements.

[0003] Most of the existing manual or automatic solid phase extraction equipment's collection bottles are separated from the equipment. The collection bottles are placed in a separate collection rack and placed at the collection outlet of the equipment. The mouth of the collection bottle and the outlet must be aligned, otherwise there is a risk of splashing or failure to collect the collected liquid. In addition, different types of collection bottles require collection racks of different specifications, which is inconvenient to use.

[0004] Many analytical instruments require that the test sample must not contain water, which requires that the collected liquid be dehydrated before analysis and testing. Existing dehydration methods generally use anhydrous sodium sulfate, anhydrous magnesium sulfate, dehydration membranes, and salting out to remove water, and they require manual operation and cannot be used online with the instrument. They are not automated and have low efficiency. Utility Model Content

[0005] The utility model provides a multifunctional liquid collecting device to solve at least one of the above-mentioned technical problems existing in the prior art.

[0006] The technical solution adopted by the utility model is:

[0007] A multifunctional liquid collection device, characterized in that a collection docking device and a water removal pipe plug are mounted on a support bracket, and the lower end of the collection docking device can be connected to a collection container, wherein:

[0008] The upper pipe for supplying the solution can be selectively connected to a water removal pipe plug, the water removal pipe plug is connected to a water removal column, the water removal column is connected to a lower pipe, and the lower pipe is connected to an access port of the collection docking device;

[0009] Alternatively, the upper tube for supplying the solution is directly connected to the access port of the collection docking device.

[0010] The multifunctional liquid collecting device, wherein the outlet end of the upper tube is provided with a first inverted cone joint and a first pressure ring, which are used to seal and connect to the threaded inlet of the water removal pipe plug, or to seal and connect to the inlet of the collecting connector.

[0011] The multifunctional liquid collecting device is characterized in that a solvent channel is provided in the water removal pipe plug, and the threaded inlet of the water removal pipe plug is connected to the solvent channel.

[0012] The multifunctional liquid collecting device, wherein the lower part of the dewatering pipe plug has a first dewatering column adapter plug in a conical shape, which is used for sealingly connecting the dewatering column.

[0013] The multifunctional liquid collecting device, wherein the lower part of the dewatering pipe plug also has a second dewatering column adapter plug in a conical shape, the second dewatering column adapter plug and the first dewatering column adapter plug have different diameters and are used for sealingly connecting dewatering columns of different models.

[0014] The multifunctional liquid collecting device, wherein the water removal pipe plug is provided with a T-shaped slideway for being installed in the T-shaped groove of the supporting bracket.

[0015] The multifunctional liquid collection device, wherein the water removal column is sealedly connected to one end of the lower tube through a Luer joint, a second inverted cone joint and a second pressure ring; the other end of the lower tube has a third inverted cone joint and a third pressure ring, which are used to be sealedly connected to the access port of the collection docking device.

[0016] The multifunctional liquid collecting device, wherein a central threaded hole connected to the access port is provided at the center of the lower end of the collecting connector, and the central threaded hole can be connected to an external threaded straight-through joint.

[0017] The multifunctional liquid collecting device is characterized in that an inner threaded hole and an outer threaded hole of different diameters are provided at the lower end of the collecting dock on the periphery of the central threaded hole, so as to connect collecting containers of different specifications; a threaded connection portion is provided on the outer side of the lower end of the collecting dock, so as to connect the collecting container and the concentration cup through the concentration cup adapter.

[0018] The multifunctional liquid collecting device, wherein the collecting dock is also provided with a balancing flow path, one end of the balancing flow path is connected to the collecting container inside the collecting dock, and the other end is connected to the pressure relief port.

[0019] In the multifunctional liquid collecting device, a first dewatering column adapter plug and a second dewatering column adapter plug are provided on the dewatering pipe plug, which are used for sealingly connecting dewatering columns of different models.

[0020] The beneficial effects of the utility model include:

[0021] 1. The utility model can quickly realize the switch between dehydration of collected materials and no dehydration;

[0022] 2. The utility model can realize the collection of target objects in a limited space using a variety of collection containers without the need for an external collection rack, and the collection bottle is fixed to the collection block without displacement error;

[0023] 3. The selected collection bottle can be directly connected to the instrument in the next step to improve the experimental efficiency and avoid loss and contamination of the measured object;

[0024] 4. The utility model has a compact structure and positive pressure collection. The collection container does not need to be strictly sealed to achieve liquid collection, thus reducing costs;

[0025] 5. The utility model can realize online water removal and achieve full process automation;

[0026] 6. The water pipe plug can achieve both sealing and locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the first usage form of the multifunctional liquid collecting device provided by the utility model.

[0028] Figure 2 This is a schematic diagram of a second usage form of the multifunctional liquid collecting device provided by the utility model.

[0029] Figure 3 It is a cross-sectional view of the collection docking device.

[0030] Figure 4 It is a cross-sectional view of the drain pipe plug.

[0031] Explanation of the reference numerals: 1-support bracket; 2-collection docking device; 201-threaded access port; 202-center threaded hole; 203-threaded connection portion; 204-pressure relief port; 205-balance flow path; 206-inner threaded hole at the inner end; 207-outer threaded hole at the outer end; 3-water removal pipe plug; 301-first water removal column adapter plug; 302-second water removal column adapter plug; 303-solvent channel; 304-threaded inlet; 305-T-type slide; 4-concentration cup adapter; 5-Luer connector; 601-first inverted cone connector and first pressure ring; 602-second inverted cone connector and second pressure ring; 603-third inverted cone connector and third pressure ring; 7-concentration cup; 801-upper tube; 802-lower tube; 9-water removal column; 10-externally threaded straight-through connector; 11-water removal column locking ring. DETAILED DESCRIPTION

[0032] The utility model provides a multifunctional liquid collecting device, such as Figure 1As shown, the support bracket 1 is equipped with a collection docking device 2 and a water removal pipe plug 3. The liquid in the extraction cup enters the upper pipe 801 through the liquid pump, and then enters the water removal pipe plug 3. It flows into the water removal column 9 (anhydrous sodium sulfate small column) through the water removal pipe plug 3 for water removal. The liquid to be collected after water removal flows into the lower pipe 802 and is connected to the lower pipe 802 through the threaded inlet 201 (see Figure 3 ) returns to the collection docking device 2; the lower end of the collection docking device 2 is connected to a collection container concentration cup 7 (or other collection containers) through a concentration cup adapter 4, which is used to collect the material to be collected flowing out of the collection docking device.

[0033] Specifically, if Figure 1 , Figure 3 , Figure 4 The outlet end of the upper tube 801 is sealed and connected to the threaded inlet 304 of the dewatering pipe plug 3 through the first inverted cone joint and the first pressure ring 601. A solvent channel 303 is provided in the dewatering pipe plug 3, and the threaded inlet 304 is connected to the solvent channel 303. The lower part of the dewatering pipe plug 3 has a first dewatering column adapter plug 301 with a conical surface, which can be connected and sealed to the dewatering column 9, ensuring that a certain pressure is formed in the dewatering column 9, and ensuring that the liquid can pass through the dewatering column smoothly.

[0034] like Figure 4 As shown, the drain pipe plug 3 is also provided with a T-shaped slide 305 for being installed in the T-shaped groove of the support bracket 1, so that the drain pipe plug 3 can be conveniently removed and installed according to the usage.

[0035] The water removal column 9 is sealed and connected to one end of the lower tube 802 through the Luer connector 5, the second inverted cone connector and the second pressure ring 602. The other end of the lower tube 802 is sealed and connected to the threaded access port 201 of the collection docking device 2 through the third inverted cone connector and the third pressure ring 603.

[0036] A threaded connection portion 203 is disposed on the outer side of the lower end of the collection docking device 2 , and the collection container concentration cup 7 is connected to the threaded connection portion 203 through the concentration cup adapter 4 .

[0037] A central threaded hole 202 connected to the threaded access port 201 is provided at the center of the lower end of the collecting docking device 2. The central threaded hole 202 can be connected to the external threaded straight-through connector 10, which is used to guide the collected liquid during the collection process to prevent it from spraying onto the edge of the collection container bottle mouth under high pressure, causing loss of collected liquid and thus affecting the experimental results.

[0038] The lower end of the collecting dock 2 is also provided with an inner end internal threaded hole 206 and an outer end internal threaded hole 207 with different diameters on the periphery of the central threaded hole 202, which can be connected to a 40mL collecting bottle (or other collecting bottles with the same thread specifications) and a 50mL centrifuge tube respectively (during use, the user can choose one of the collection containers for connection and collection).

[0039] The collection docking device 2 is also provided with a balancing flow path 205, one end of which is connected to the collection container concentration cup 7 inside the collection docking device 2, and the other end is connected to the pressure relief port 204. When the collection container is relatively sealed, as the collection proceeds, the pressure in the container increases, and the pressure can be balanced through the flow path 205. When necessary, the gas can be discharged through a pipeline connected to the pressure relief port 204 to ensure the safety of the laboratory environment.

[0040] And as Figure 2 As shown, when the collected solvent does not need to be dehydrated, the inverted cone joint connected to the upper tube 801 and the first pressure ring 601 are directly connected to the threaded access port 201 of the collection docking device 2 (instead of the lower tube 802).

[0041] A first dewatering column adapter plug 301 is provided on the dewatering pipe plug 3, which is used to connect and seal the 20mL dewatering column. A second dewatering column adapter plug 302 is also provided on the dewatering pipe plug 3, which is used to connect and seal the 12mL dewatering column. The two types of dewatering columns can be locked with corresponding dewatering column locking rings 11 respectively to prevent the dewatering column and the dewatering pipe plug from detaching due to excessive pressure in the collection system.

[0042] The beneficial effects of the utility model include:

[0043] 1. The utility model can realize the collection of target objects in a limited space using a variety of collection containers without the need for an external collection rack, and the collection bottle is fixed to the collection block without displacement error;

[0044] 2. The selected collection bottle can be directly connected to the instrument in the next step to improve the experimental efficiency and avoid loss and contamination of the measured object;

[0045] 3. The utility model has a compact structure and positive pressure collection. The collection container does not need to be strictly sealed to achieve liquid collection, thus reducing costs;

[0046] 4. The utility model can quickly realize the switch between dehydration of collected materials and no dehydration;

[0047] 5. The utility model can realize online water removal and achieve full process automation;

[0048] 6. The water pipe plug can achieve both sealing and locking.

Claims

1. A multifunctional liquid collecting device, characterized in that: The support bracket is provided with a collection docking device and a water removal pipe plug, and the lower end of the collection docking device can be connected to a collection container, wherein: The upper pipe for supplying the solution can be selectively connected to a water removal pipe plug, the water removal pipe plug is connected to a water removal column, the water removal column is connected to a lower pipe, and the lower pipe is connected to an access port of the collection docking device; Alternatively, the upper tube for supplying the solution is directly connected to the access port of the collection docking device.

2. The multifunctional liquid collecting device according to claim 1, characterized in that: The outlet end of the upper pipe is provided with a first inverted cone joint and a first pressure ring, which are used to seal and connect the threaded inlet of the water removal pipe plug, or seal and connect the inlet of the collecting butt joint.

3. The multifunctional liquid collecting device according to claim 2, characterized in that: A solvent channel is arranged in the water removal pipe plug, and the threaded inlet of the water removal pipe plug is communicated with the solvent channel.

4. The multifunctional liquid collecting device according to claim 1, characterized in that: The lower part of the dewatering pipe plug is provided with a first dewatering column adapter plug in a conical shape, which is used for sealingly connecting the dewatering column.

5. The multifunctional liquid collecting device according to claim 4, characterized in that: The lower part of the dewatering pipe plug is also provided with a second dewatering column adapter plug in a conical shape. The second dewatering column adapter plug has a different diameter from the first dewatering column adapter plug and is used for sealing and connecting dewatering columns of different models.

6. The multifunctional liquid collecting device according to claim 1, characterized in that: The drain pipe plug is provided with a T-shaped slideway for being installed in the T-shaped slot of the support bracket.

7. The multifunctional liquid collecting device according to claim 1, characterized in that: The water removal column is sealed and connected to one end of the lower tube through a Luer joint, a second inverted cone joint and a second pressure ring; the other end of the lower tube is provided with a third inverted cone joint and a third pressure ring, which are used for sealing and connecting to the access port of the collection docking device.

8. The multifunctional liquid collecting device according to claim 1, characterized in that: A central threaded hole connected to the access port is provided at the center of the lower end of the collecting docking device, and the central threaded hole can be connected to an external threaded straight-through joint.

9. The multifunctional liquid collecting device according to claim 8, characterized in that: The lower end of the collection docking device is also provided with an inner end internal threaded hole and an outer end internal threaded hole with different diameters on the periphery of the central threaded hole, which is used to connect collection containers of different specifications; a threaded connection part is provided on the outer side of the lower end of the collection docking device, which is used to connect the collection container concentration cup through a concentration cup adapter.

10. The multifunctional liquid collecting device according to claim 1, characterized in that: The collecting dock is also provided with a balancing flow path, one end of which is connected to the collecting container inside the collecting dock, and the other end is connected to the pressure relief port.

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