CN204841532U - Device that mixes liquid is prepared to isolated air - Google Patents

Abstract

The utility model discloses an air-isolated device for preparing a mixed liquid, which comprises a vacuum pump, a mixed liquid preparation container, a liquid storage device and a protective gas source. It is the first communication port, the second communication port and the third communication port; the suction port of the vacuum pump is connected to the first communication port of the mixed liquid preparation container, and the second and third communication ports of the mixed liquid preparation container are respectively connected to the liquid The liquid outlet of the reservoir is connected with the protective gas outlet of the protective gas source; the liquid outlet of the liquid storage is provided with a first valve; the protective gas outlet of the protective gas source is provided with a second valve. The device of the utility model can prepare the mixed liquid in the state of being isolated from the air, avoiding the dispersion liquid from contacting the active gas in the air during the mixing process, and is especially suitable for the preparation of the solution that needs to avoid the large influence of the oxygen in the air on the solvent. The structure is simple, Easy to operate.

Description

A device for preparing mixed liquid in isolation from air

technical field

The utility model belongs to the technical field of mixed liquid preparation devices, in particular to an air-isolated device for preparing mixed liquid.

Background technique

For some specific liquids (such as: oilfield injection water, etc.), in order to maintain their original state and avoid exposure to oxygen to cause major changes in their properties, it is necessary to prepare relevant solutions in the state of isolation from air (oxygen) and transfer them to the destination container middle. These special-purpose liquids (mixed liquids) have unstable chemical properties under the condition of contacting air, which seriously affects their performance.

In the prior art, the patent CN202410654U discloses an experimental device for vacuum injection of nitrogen to preserve polymer solutions, which consists of a nitrogen cylinder, a pressure vessel, a six-way valve, and a vacuum pump. The nitrogen cylinder passes through the outlet valve through the pipeline and the pressure vessel The two-way valve set on the top is connected, the outlet valve is equipped with a pressure reducing valve, the pressure-resistant container is connected to the vacuum pump through the six-way valve, and a vacuum gauge is installed on the six-way valve; a pressure gauge is installed on the outlet valve of the nitrogen cylinder. Although the experimental device can ensure the stability of the performance of the chemical solution under the condition of isolated air, and avoid the phenomenon that the performance of the chemical solution is affected after the chemical solution is in contact with the air, the experimental device only works when the polymer solution is preserved, and cannot be used for In the solution preparation and transfer stage, if the chemical solution has been affected by air (oxygen) during preparation, it is meaningless to isolate the air during subsequent storage. Therefore, the experimental device for preserving the polymer solution disclosed in the prior art cannot isolate the air during preparation, and common equipment and devices for preparing solutions cannot meet the requirements for preparing specific solutions (or other mixed solutions) under the condition of isolation of air.

Contents of the invention

The purpose of the utility model is to provide a device for preparing a mixed solution in isolation from air, so as to solve the problem that the existing device cannot meet the requirement of preparing a specific mixed solution in the condition of isolation from the air.

In order to achieve the above object, the technical solution adopted in the utility model is:

A device for preparing a mixed liquid in isolation from air, including a vacuum pump, a mixed liquid preparation container, a liquid storage and a protective gas source. The upper part of the mixed liquid preparation container is provided with three communication ports that communicate with the inside of the container. A communication port, a second communication port and a third communication port; the suction port of the vacuum pump is connected to the first communication port of the mixed liquid preparation container, and the second and third communication ports of the mixed liquid preparation container are connected to the liquid reservoir respectively. The liquid outlet is connected to the protective gas outlet of the protective gas source; the liquid outlet of the liquid storage is provided with a first valve; the protective gas outlet of the protective gas source is provided with a second valve.

The mixed liquid preparation container is a mixed liquid preparation bottle, and the communication port is arranged at the bottleneck of the mixed liquid preparation bottle; the bottleneck of the mixed liquid preparation bottle is provided with a rotating inner plug, and the rotating inner plug extends into the bottle The part of the bottle is provided with a channel that can communicate with the inside of the bottle and the first, second or third communication port at the neck of the bottle when rotating.

The mixed liquid preparation container is a mixed liquid preparation tank, and the first, second, and third communication ports of the mixed liquid preparation tank are respectively provided with third, fourth, and fifth valves.

The bottom of the mixed liquid preparation container is also provided with a mixed liquid outlet.

The vacuum pump communicates with the mixed liquid preparation container through a three-way valve; the air suction port of the vacuum pump is connected with the first port of the three-way valve, and the second and third ports of the three-way valve are respectively connected with the first port of the mixed liquid preparation container. A communication port and a mixed solution outlet are connected. A sixth valve is arranged at the outlet of the mixed solution of the mixed solution preparation container.

The device for isolating the air to prepare the mixed solution also includes a buffer container, the buffer container is arranged between the vacuum pump and the three-way valve; the air suction port of the vacuum pump is connected with the air outlet of the buffer container through a six-way valve, and the buffer container The air inlet of the container is connected with the first interface of the three-way valve; a vacuum gauge is installed on the six-way valve.

The buffer container is a buffer bottle.

The device for preparing the mixed solution with air isolation also includes at least one drying tower, which is arranged in series between the six-way valve and the buffer container.

The second communication port of the mixed liquid preparation container is connected to the liquid outlet of the liquid storage through a first pipeline, and the end of the first pipeline connected to the liquid outlet of the liquid storage extends into the liquid storage the bottom of the interior.

Both the liquid storage container and the container of the protective gas source are compressible containers. The protective gas source is a nitrogen source. The nitrogen source is a nitrogen bag.

A scale for marking the volume is provided on the wall of the mixed solution preparation container. The function of setting the scale is to facilitate constant volume when preparing the mixed solution.

In the air-isolated device for preparing mixed liquid of the utility model, the three communication ports on the upper part of the mixed liquid preparation container are respectively connected with the suction port of the vacuum pump, the liquid outlet of the liquid storage device, and the protective gas outlet of the protective gas source. The substance to be dispersed is placed in the mixed liquid preparation container, the first valve set at the liquid outlet of the liquid reservoir and the second valve at the protective gas source and protective gas outlet are closed, and after the air in the system is removed by a vacuum pump, the first valve is opened, and the Under the action of negative pressure, the dispersion liquid stored in the liquid reservoir automatically enters the mixed liquid preparation container; close the first valve, open the second valve, and under the action of negative pressure, the protective gas in the protective gas source enters the mixed liquid preparation container, It can complete the preparation of the mixed solution under the condition of isolating the air, avoiding the contact of the dispersion liquid with active gases such as oxygen in the air during the mixing process, especially suitable for the preparation of solutions that need to avoid the large impact of oxygen in the air on the solvent, with simple structure and convenient operation .

Further, the bottom of the mixed liquid preparation container is also provided with a mixed liquid outlet, and the vacuum pump is connected with the mixed liquid preparation container through a three-way valve, while the dispersion liquid can disperse the substance to be dispersed without contacting the air, it can be connected to A simple change in the method (connecting the second port of the three-way valve to the inlet of the destination container) allows the prepared mixed solution to be transferred into the destination container without contact with the air, realizing the liquid transfer under the condition of isolating the air operate.

Further, a drying tower and a buffer container are arranged between the vacuum pump and the mixed liquid preparation container. The function of the drying tower is to prevent the moisture in the air or the dispersion liquid from damaging the vacuum pump and the vacuum gauge; It is pumped into the follow-up pipeline to ensure the stability of the vacuum pump operation.

Description of drawings

Fig. 1 is the structural representation of the device for preparing mixed liquor in isolation from air of embodiment 1;

Fig. 2 is a schematic structural view of the rotary inner plug in Fig. 1;

Fig. 3 is a side sectional view of Fig. 2;

Fig. 4 is a schematic structural diagram of the device of Example 1 used in transferring mixed liquid.

Detailed ways

The utility model will be further described below in conjunction with specific embodiments.

Example 1

The device of the air-isolated preparation mixed solution of the present embodiment, as shown in Figure 1, comprises vacuum pump 1, drying tower, buffer container, mixed solution preparation container, liquid reservoir 10 and nitrogen source 11; Described buffer container is buffer bottle 6 , the mixed solution preparation container is a mixed solution preparation bottle 9;

The drying tower includes a first drying tower 4 and a second drying tower 5 connected in series along the pumping direction; the suction port of the vacuum pump 1 is connected with the gas outlet of the second drying tower 5 through a six-way valve 2, the A vacuum gauge 3 is installed on the six-way valve 2; the air inlet of the first drying tower 4 is connected with the gas outlet of the buffer bottle 6 through the third pipeline, and the third pipeline is connected with the gas outlet of the buffer bottle 6 The end stretches into the inside of the buffer bottle 6;

The neck of the mixed solution preparation bottle 9 is provided with three communication ports connected to the inside of the bottle, which are respectively the first communication port d, the second communication port f and the third communication port e, and the bottom of the mixed solution preparation bottle 9 is also A mixed solution outlet is provided; the buffer bottle 6 communicates with the mixed solution preparation bottle 9 through a three-way valve 7, specifically: the air inlet of the buffer bottle 6 is connected to the first port of the three-way valve 7 through a third pipeline. The interface a is connected, the end of the third pipeline connected with the air inlet of the buffer bottle 6 extends into the bottom of the buffer bottle 6, and the second interface b of the three-way valve 7 is connected to the first port of the mixed solution preparation bottle 9. The communication port d is connected; the third port c of the three-way valve 7 is connected to the mixed solution outlet of the mixed solution preparation bottle 9; the second communication port f of the mixed solution preparation bottle 9 is connected to the liquid storage through the first pipeline 10 is connected to the liquid outlet, and the end of the first pipeline connected to the liquid outlet of the liquid reservoir 10 extends into the bottom of the liquid reservoir 10; the third communication port e of the mixed solution preparation bottle 9 passes through the first The two pipelines are connected with the nitrogen outlet of the nitrogen source 11; the liquid outlet of the liquid reservoir 10 is provided with a first valve 12; the nitrogen outlet of the nitrogen source 11 is provided with a second valve 13; the mixed liquid A sixth valve 14 is provided at the outlet of the mixed solution of the preparation bottle 9;

The spool of the three-way valve 7 is in the shape of "∟", which can be rotated to close the passage or connect the first port a and the second port b or connect the second port b and the third port c; the mixed liquid preparation bottle The bottle mouth of 9 is provided with a rotary inner plug 8, and the part of the rotary inner plug 8 that extends into the bottle is provided with a line for connecting the inside of the bottle and the bottleneck at the first communication port d, the second communication port f or The passage of the third communication port e can be rotated to close the passage or make the inside of the bottle communicate with the first communication port d, the second communication port f or the third communication port e; the structure of the rotating inner plug 8 is specifically shown in Figures 2 and 3 As shown, it includes a plug head connected together and a deep bottle inner part 18 for matching with the bottle mouth. The deep bottle inner part 18 is provided with a groove 20 facing the bottom of the bottle in the opening direction, and the groove 20 is close to the side wall of the bottom of the groove There is a through hole g that penetrates the inside of the groove and the outer wall of the inner part of the bottle through the rotating inner plug. The groove 20 and the through hole g form the first communication port d, the second communication port f or the third communication port that communicates with the bottle neck and the inside of the bottle. The channel of the communication port e; the plug head of the rotary inner plug 8 is also provided with a handle 19 that is convenient to hold and rotate;

The top of the liquid reservoir 10 is provided with a liquid inlet, and the seventh valve 15 is provided at the liquid inlet; the nitrogen source 11 is a nitrogen bag; the wall of the mixed liquid preparation bottle 9 is provided with a Scale indicating volume. In the device, the connecting pipe can be a rubber tube, and the first, second, and sixth valves can be a water-stop clip clamped on the rubber tube.

The device for preparing the mixed solution in isolation from the air of the present embodiment, when preparing the solution, place the weighed substance to be dissolved in the mixed solution preparation bottle 9 (the sixth valve 14 at the mixed solution outlet of the mixed solution preparation bottle 9 is at the closed state), the solvent is loaded into the liquid reservoir 10 (when the solvent is stored in advance, the first and seventh valves can be opened to make the solvent slowly flow into the liquid reservoir, gradually remove the upper layer of air and fill the liquid reservoir, and continue to flow into the solvent Make the upper layer contact with the air part solvent and get rid of, then close the first and the seventh valves to ensure that the liquid reservoir is fresh and not in contact with the air solvent); the side wall of the rotary inner plug 8 and the inner wall of the bottle mouth of the mixed solution preparation bottle 9 are smeared with sealant, and the The rotary inner plug 8 is inserted into the mouth of the mixed solution preparation bottle 9 to ensure the airtightness of the rotary inner plug 8 and the bottle mouth and the connectivity between the inner channel of the rotary inner plug 8 and the communication port; close the first valve 12 and the second valve 13 , the spool of the rotary three-way valve 7 is connected to the first port a and the second port b, and the rotary inner plug 8 is turned to make the first port d communicate with the inside of the mixed liquid preparation bottle 9; the vacuum pump 1 is turned on to pump air to the system until The vacuum gauge 3 shows a negative pressure state, remove the air in the mixed solution preparation bottle 9; rotate the rotating inner plug 8 repeatedly, so that the second communication port f or the third communication port e is connected to the inside of the mixed solution preparation bottle 9 respectively, and the first The air in the first pipeline and the second pipeline enters the mixed solution preparation bottle 9 and is drawn out by the vacuum pump; close the three-way valve 7 (the spool of the rotary three-way valve 7 is closed and communicated), open the first valve 12, and turn the rotary inner plug 8 to make the third The second communication port f communicates with the inside of the mixed solution preparation bottle 9, and the solvent in the liquid reservoir 10 automatically flows into the mixed solution preparation bottle 9 under the action of negative pressure; after the amount of solvent reaches the target scale, close the first valve 12 and turn the rotating inner The plug 8 connects the third communication port e with the inside of the mixed liquid preparation bottle 9, opens the second valve 13, fills the mixed liquid preparation bottle 9 with nitrogen gas as a protective gas, and turns the rotary inner plug 8 to close the communication. Use the magnetic rotor pre-installed in the mixed liquid preparation bottle to completely dissolve the substance to be dissolved in the solvent to form a solution through magnetic stirring, or shake the mixed liquid preparation bottle to completely dissolve the to-be-dissolved substance in the solvent to form a solution.

When transferring the prepared solution, connect the second interface b of the three-way valve 7 to the ampoule bottle 17 (the destination container for transferring the solution), as shown in Figure 4; the vacuum pump 1 remains in working condition, and the valve core of the rotary three-way valve 7 is connected The first interface a and the second interface b make the ampoule bottle 17 communicate with the buffer bottle 6, and remove the air in the ampoule bottle 17; Second, remove the air in the pipeline between the mixed solution preparation bottle 9 and the ampoule bottle 17 by the negative pressure in the ampoule bottle; slowly open the sixth valve 14 to make the mixed solution preparation bottle 9 communicate with the ampoule bottle 17. Next, the solution was transferred into the ampoule bottle, and the ampoule bottle was burned and sealed with an alcohol blowtorch to complete the sample preparation and transfer under the condition of isolated air.

Example 2

The device for preparing a mixed solution in isolation from air in this embodiment is different from that of Example 1 in that the mixed solution preparation container is a closed mixed solution preparation tank, and the first communication port, the second communication port and the third communication port are connected to each other. The port is arranged on the upper part of the mixed liquid preparation tank, and the first communication port, the second communication port and the third communication port are respectively provided with the third, fourth and fifth valves, and the mixed liquid outlet is arranged in the mixed liquid preparation tank The lower part; the buffer container is a buffer tank; the pipelines used are common steel pressure-resistant pipelines, and the first to sixth valves used are common steel globe valves. The mixed solution preparation tank can have a built-in agitator while ensuring airtightness.

In this embodiment, through the opening or closing of the third, fourth, and fifth valves, the first communication port, the second communication port, and the third communication port are respectively controlled to communicate with the inside of the mixed liquid preparation tank, and the same function as that of embodiment 1 is realized. On the basis of it, it is more suitable for industrialized mass production.

Example 3

The device for preparing mixed liquid in isolation from air in this embodiment is different from that of Embodiment 1 in that: the liquid reservoir is a closed compressible container, and the second communication port of the mixed liquid preparation bottle is connected to the liquid storage through the first pipeline. The liquid outlet of the device is connected, and the end of the first pipeline does not need to go deep into the liquid storage; under the action of negative pressure, the liquid storage is compressed so that the solvent automatically flows into the mixed liquid preparation bottle, so that the solvent is further isolated from the air.

In other embodiments of the present utility model, the drying tower and/or the buffer container can be omitted as needed, and it is suitable for situations where the air is dry, the dispersion liquid is mild in nature, and will not cause great damage to the vacuum pump; the pumping of the vacuum pump can also be The air port is directly connected to the first communication port of the mixed liquid preparation container, and the vacuum pump is used to control the negative pressure state of the mixed liquid preparation container; if there is no need to transfer the liquid or the mixed liquid preparation container is the target container, the mixed liquid outlet may not be provided; or the mixed liquid The mixed liquid outlet of the preparation container is directly connected with the destination container under negative pressure to realize the air-to-liquid transfer; the protective gas source can also use other inert gas sources; the nitrogen source can also use nitrogen cylinders, etc.

Claims (10)

1. A device for isolating air to prepare a mixed solution, characterized in that: it comprises a vacuum pump, a mixed solution preparation container, a liquid reservoir and a protective gas source, and the upper part of the mixed solution preparation container is provided with three communication ports that communicate with the inside of the container Ports are respectively the first communication port, the second communication port and the third communication port; the suction port of the vacuum pump is connected to the first communication port of the mixed liquid preparation container, and the second and third communication ports of the mixed liquid preparation container They are respectively connected with the liquid outlet of the liquid storage and the protective gas outlet of the protective gas source; the liquid outlet of the liquid storage is provided with a first valve; the protective gas outlet of the protective gas source is provided with a second valve. 2. The device for preparing a mixed liquid in isolation from air according to claim 1, characterized in that: the mixed liquid preparation container is a mixed liquid preparation bottle, and the communication port is arranged at the neck of the mixed liquid preparation bottle; the mixing The bottle mouth of the liquid preparation bottle is provided with a rotating inner plug, and the part of the rotating inner plug extending into the bottle is provided with a channel for connecting the inside of the bottle with the first, second or third communication port at the neck of the bottle when rotating. . 3. The device for preparing mixed liquid in isolation from air according to claim 1, characterized in that: the mixed liquid preparation container is a mixed liquid preparation tank, and the first, second and third communication ports of the mixed liquid preparation tank are There are third, fourth and fifth valves respectively. 4. The device for preparing the mixed liquid with air isolation according to claim 1, 2 or 3, characterized in that: the bottom of the mixed liquid preparation container is also provided with a mixed liquid outlet. 5. The device for preparing mixed liquid in isolation from air according to claim 4, characterized in that: the vacuum pump is connected with the mixed liquid preparation container through a three-way valve; the suction port of the vacuum pump is connected to the first interface of the three-way valve The second and third ports of the three-way valve are respectively connected to the first communication port and the mixed liquid outlet of the mixed liquid preparation container. 6. The device for preparing mixed liquid in isolation from air according to claim 5, characterized in that: it also includes a buffer container, and the buffer container is arranged between the vacuum pump and the three-way valve; the suction port of the vacuum pump passes through six The one-way valve is connected with the air outlet of the buffer container, and the air inlet of the buffer container is connected with the first interface of the three-way valve; a vacuum gauge is installed on the six-way valve. 7 . The device for preparing mixed liquid with air isolation according to claim 6 , further comprising at least one drying tower, which is arranged in series between the six-way valve and the buffer container. 8 . 8. The device for preparing mixed liquid in isolation from air according to claim 1, characterized in that: the second communication port of the mixed liquid preparation container is connected to the liquid outlet of the liquid storage through a first pipeline, and the first The end of a pipe connected to the liquid outlet of the liquid reservoir extends into the bottom of the interior of the liquid reservoir. 9. The device for preparing mixed liquid in isolation from air according to claim 1, characterized in that: the liquid reservoir and the container protecting the gas source are both compressible containers. 10. The device for preparing the mixed liquid with air isolation according to claim 1, 2 or 3, characterized in that: the wall of the mixed liquid preparation container is provided with a scale for marking the volume.