Filtering device for laboratory

Abstract

According to the filtering device for the laboratory, provided by the utility model, the filtering device for the laboratory is arranged in the reaction container, and the sealing plug is arranged on the opening of the reaction container. The filtering container is arranged in the reaction container to filter a reaction medium, the connecting pipe is arranged on a sealing plug of the reaction container, one end of the connecting pipe is communicated with the filtering container, the other end of the connecting pipe is used for conveying the filtered reaction medium to the outside, and the switching valve is used for controlling on-off of the reaction medium in the connecting pipe. The filtering device for the laboratory is simple in structure, is matched with a conventional reaction container, and can realize filtering operation in a water-free and oxygen-free environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical experimental equipment, and particularly relates to a filtering device for laboratory use. Background Art

[0002] In the process of chemical experiment work, some compounds with special properties are often encountered. These compounds are very sensitive to air, especially afraid of water and oxygen in the air. For the synthesis, separation, purification, and analysis and identification of such compounds, special instruments and anhydrous and anaerobic operations must be used. Otherwise, even if the synthesis route and reaction conditions are met during the operation, the expected products cannot be obtained in the end.

[0003] The anhydrous and anaerobic operation technology is widely used in organic chemistry and inorganic chemistry. Currently, the anhydrous and anaerobic operations adopted are divided into three types: (1) high-vacuum operation (Vacuum-line); (2) Schlenk operation; (3) glove-box operation. Most of the operations used in laboratories are Schlenk operation and glove-box operation.

[0004] However, for experiments with filtration requirements, in the above experimental operations, either there is no dedicated filtration equipment, or the traditional equipment needs to be specially modified, and some laboratories do not have the conditions for modification.

[0005] Currently, a filtering device for laboratory use with a simple structure and capable of performing filtration operations in an anhydrous and anaerobic environment has not been developed. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a filtering device for laboratory use, which has a simple structure and can realize filtration operations in an anhydrous and anaerobic environment.

[0007] To solve the above technical problems, the utility model provides a filtering device for laboratory use, which is applied to a reaction vessel. An opening is provided on the reaction vessel, and a sealing plug is detachably arranged on the opening;

[0008] The filtering device for laboratory use includes a filtering container, a connecting pipe, and a switching valve. The filtering container is arranged in the reaction vessel and is used for filtering the reaction medium. The connecting pipe penetrates through the sealing plug. One end of the connecting pipe is connected in series with the switching valve, and the other end of the connecting pipe is communicated with the filtering container.

[0009] Optionally, in the above filtering device for laboratory use, the filtering container can move relative to the reaction vessel so that when non-filtration operation is performed, the filtering container is away from the reaction medium in the reaction vessel, and when filtration operation is performed, the filtering container is located in the reaction medium in the reaction vessel.

[0010] Optionally, in the above-mentioned laboratory filtration device, a magnetic adsorption mechanism is further included;

[0011] The connecting pipe and the filtration container are connected by a hose, and a magnetic medium layer for magnetic adsorption with the magnetic adsorption mechanism is provided on the filtration container.

[0012] Optionally, in the above-mentioned laboratory filtration device, the filtration container is a cavity structure with an opening, and the opening of the filtration container fits against the inner wall of the reaction container to form a filtration cavity.

[0013] Optionally, in the above-mentioned laboratory filtration device, the magnetic medium layer is provided at the opening of the filtration container.

[0014] Optionally, in the above-mentioned laboratory filtration device, a reinforcing pipe is provided at the connection between the hose and the filtration container.

[0015] Optionally, in the above-mentioned laboratory filtration device, the outside of the magnetic medium layer is coated with a corrosion-resistant layer.

[0016] Optionally, in the above-mentioned laboratory filtration device, the inner wall curvature of the magnetic adsorption mechanism is the same as the outer wall curvature of the reaction container.

[0017] Optionally, in the above-mentioned laboratory filtration device, the connecting pipe is slidably connected to the sealing plug.

[0018] Optionally, in the above-mentioned laboratory filtration device, the filtration container is a filtration container made of porous ceramic material, or the filtration container is a filtration container made of sintered metal material.

[0019] The present utility model provides a laboratory filtration device, and its beneficial effects are as follows:

[0020] During specific operation, the laboratory filtration device is placed in the reaction container, and a sealing plug is provided on the opening of the reaction container. The filtration container of the laboratory filtration device is located in the reaction container and is used for filtering the reaction medium. The connecting pipe is provided on the sealing plug at the opening of the reaction container. One end of the connecting pipe is communicated with the filtration container, and the other end is used for transporting the filtered reaction medium to an external liquid storage device. The on-off valve is connected in series at the other end of the connecting pipe to control the on-off of the reaction medium in the connecting pipe. Nitrogen or other inert gases can be used to displace the air in the reaction container, and then reactants are added to the opening of the reaction container and reacted under appropriate conditions until the reaction ends. The reaction medium is discharged, and the opening of the reaction container is sealed with the sealing plug to achieve an anhydrous and anaerobic operating environment, so that the laboratory filtration device can be used for filtration operation.

[0021] The structure of the laboratory filtration device set as described above is simple. When it is combined with a conventional reaction vessel, the filtration operation in an anhydrous and anaerobic environment can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 FIG. is a schematic structural diagram of the assembly of a laboratory filtration device and a reaction vessel provided by an embodiment of the present invention;

[0024] Figure 2 FIG. is a schematic structural diagram of the reaction vessel provided by an embodiment of the present invention;

[0025] Figure 3 FIG. is a schematic structural diagram of a filtration container, a connecting pipe, and a switching valve provided by an embodiment of the present invention;

[0026] Figure 4 FIG. is a schematic structural diagram of the magnetic adsorption mechanism provided by an embodiment of the present invention;

[0027] Figure 5 FIG. is a schematic structural diagram of a laboratory filtration device and a reaction vessel in an unused state provided by an embodiment of the present invention;

[0028] Figure 6 FIG. is a schematic structural diagram of a laboratory filtration device and a reaction vessel in a use state provided by an embodiment of the present invention.

[0029] In the above figures:

[0030] 100 - reaction vessel; 110 - first opening; 120 - second opening; 130 - first sealing plug; 140 - second sealing plug;

[0031] 210 - filtration container; 211 - reinforcing pipe; 212 - magnetic medium layer; 220 - flexible hose; 230 - connecting pipe; 240 - switching valve;

[0032] 300 - magnetic adsorption mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiments of the present utility model are described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0034] The core of the present utility model is to provide a filtering device for laboratory use, which has a simple structure and can realize the filtering operation in an anhydrous and anaerobic environment.

[0035] In order to enable those skilled in the art to better understand the technical solutions provided by the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0036] Specifically, please refer to Figures 1 - 6 , a filtering device for laboratory use provided by the present utility model is applied to a reaction vessel 100. An opening is provided on the reaction vessel 100, and a sealing plug is detachably provided on the opening. The reaction vessel 100 is used as a container for anhydrous and anaerobic experiments and can be a conventional glass or other material container. At least one opening is provided on the reaction vessel 100, and a sealing plug is detachably provided on each opening.

[0037] The filtering device for laboratory use includes a filtering container 210, a connecting pipe 230, and a switching valve 240. The filtering container 210 is disposed inside the reaction vessel 100. The filtering container 210 is used to filter the reaction medium (specifically, it can filter out solid particles in the gas or liquid medium), and convey the required gas or liquid medium to the outside through the filtering container 210 and the connecting pipe 230. The connecting pipe 230 penetrates through one of the sealing plugs, and both ends are respectively located inside and outside the reaction vessel 100. A switching valve 240 is connected in series at the end of the connecting pipe 230 located outside the reaction vessel 100. The connecting pipe 230 is used to communicate with an external liquid storage device, and the switching valve 240 is used to control the on-off of the liquid in the connecting pipe 230. The other end of the connecting pipe 230 located inside the reaction vessel 100 is communicated with the filtering container 210, so that the gas or liquid medium in the reaction vessel 100 can be sequentially conveyed to the external liquid storage device through the filtering container 210 and the connecting pipe 230. Among them, the reaction medium can be different combinations such as different liquids mixed, or liquid and solid mixed, or liquid and gas, or solid and gas, or liquid, solid, and gas mixed.

[0038] Specifically, several openings at least include a first opening 110 and at least a second opening 120. A first sealing plug 130 and a second sealing plug 140 are detachably arranged on the first opening 110 and the second opening 120 respectively. A connecting pipe 230 is inserted into the first sealing plug 130, which is used to provide an installation position for the filtering mechanism. The second opening 120 is used for introducing solids, liquids or gases. When there is one second opening 120, all reaction media can enter the reaction vessel 100 through the second opening 120. When there are multiple second openings 120, the reaction media can be sent into the reaction vessel 100 through different second openings 120 respectively, and finally the second opening 120 is sealed by the second sealing plug 140. The reaction vessel 100 can be provided with the number of second openings 120 according to actual needs to facilitate the completion of experimental reactions.

[0039] During specific operations, place the laboratory filtering device in the reaction vessel 100. Nitrogen or other inert gases can be used to displace the air in the reaction vessel 100. Then, add reactants to the opening of the reaction vessel 100 and carry out the reaction under appropriate conditions until the reaction ends. Discharge the reaction medium and seal the opening of the reaction vessel 100 with a sealing plug to achieve an anhydrous and anaerobic operating environment, so that the laboratory filtering device can be used for filtering operations.

[0040] A laboratory filtering device provided by the present utility model is applied to the reaction vessel 100, and a sealing plug is arranged on the opening of the reaction vessel 100. The filtering container 210 of the laboratory filtering device is located in the reaction vessel 100 and is used to filter the reaction medium. The connecting pipe 230 is arranged on the sealing plug of the opening of the reaction vessel 100. One end of the connecting pipe 230 is connected to the filtering container 210, and the other end is used to transport the filtered reaction medium to an external liquid storage device. The on-off valve 240 is connected in series to the other end of the connecting pipe 230 to control the on-off of the reaction medium in the connecting pipe 230.

[0041] The structure of the above-mentioned laboratory filtering device is simple. When it is combined with a conventional reaction vessel 100, the filtering operation under an anhydrous and anaerobic environment can be realized.

[0042] In a specific embodiment, the filtering container 210 can move relative to the reaction vessel 100 to realize that when non-filtering operations are carried out in the reaction vessel 100, the filtering container 210 is away from the reaction medium in the reaction vessel 100 (as Figure 5 shown), and solid particles are blocked by the filtering container 210 and the liquid or gas medium is transported to the outside through the connecting pipe 230. When filtering operations are carried out in the reaction vessel 100, the filtering container 210 is located in the reaction medium of the reaction vessel 100 (as Figure 6 shown), and the filtering container 210 is moved into the liquid in the reaction vessel 100 for filtering.

[0043] Further, the filter container 210 can be moved relative to the reaction container 100, and various structural forms can be used to achieve this.

[0044] In one form, the connecting pipe 230 can slide relative to the sealing plug, so as to realize the up and down movement of the filter container 210 driven by the connecting pipe 230.

[0045] In another form, the solution further includes a magnetic adsorption mechanism 300. The connecting pipe 230 and the filter container 210 are connected through a hose 220. A magnetic medium layer 212 for magnetic adsorption with the magnetic adsorption mechanism 300 is provided on the filter container 210. The magnetic adsorption mechanism 300 is located outside the reaction container 100, and the filter container 210 is located inside the reaction container 100. The magnetic attraction force generated by the magnetic adsorption mechanism 300 and the magnetic medium layer 212 can adsorb the filter container 210 and keep it at a certain position on the wall of the reaction container 100. The hose 220 can stretch and move inside the reaction container 100 to realize the flexible movement of the filter container 210.

[0046] By moving the magnetic adsorption mechanism 300, when the reaction medium in the reaction container 100 is reacting, the filter container 210 can be fixed at the upper part of the reaction flask by moving the magnetic adsorption mechanism 300 without affecting the reaction; after the reaction in the reaction container 100 is completed, the filter container 210 is moved to the bottom of the reaction container 100 by the magnetic adsorption mechanism 300 to realize filtration.

[0047] In addition, in order to improve the connection strength between the hose 220 and the filter container 210, a reinforcing pipe 211 is provided at the connection between the hose 220 and the filter container 210.

[0048] In order to prevent the magnetic medium layer 212 from being corroded by the reaction medium, the outside of the magnetic medium layer 212 is coated with a corrosion-resistant layer, and the corrosion-resistant layer is made of corrosion-resistant materials such as PVDF.

[0049] The inner wall radian of the magnetic adsorption mechanism 300 is consistent with the outer wall radian of the reaction container 100, which is convenient for the magnetic adsorption mechanism 300 to better adsorb on the outer wall of the reaction container 100. At the same time, a handle can also be installed on the magnetic adsorption mechanism 300 to facilitate the movement of the magnetic adsorption mechanism 300.

[0050] On the basis of the above specific embodiments, the filter container 210 is a cavity structure with an opening. The opening of the filter container 210 fits with the inner wall of the reaction container 100 to form a filter cavity. The radian of the cavity structure at the opening edge is consistent with the inner wall radian of the reaction container 100. A number of filter holes are provided on the cavity structure. The aperture of the filter holes needs to consider the size of the impurities to be removed, and the aperture and number of the filter holes are determined according to the specific size of the impurities.

[0051] As Figure 3 shown, the bottom of the reaction vessel 100 is a spherical structure, and the filtration vessel 210 is a hemispherical structure, which can achieve good fitting between the two, and it is also convenient for the filtration vessel 210 to be placed into the reaction vessel 100 through the opening of the reaction vessel 100. In particular, the magnetic medium layer 212 is arranged at the opening of the filtration vessel 210, which can better achieve the adsorption stability.

[0052] Of course, the filtration vessel 210 can also be a closed cavity structure, and a number of filtration holes are opened on the closed cavity structure. The adsorption stability between the filtration vessel 210 and the reaction vessel 100 can be improved by designing the shape of the filtration vessel 210, the setting position of the magnetic medium layer 212, and the shape of the reaction vessel 100.

[0053] In a specific embodiment, the filtration vessel 210 can be made of porous ceramic material, or the filtration vessel 210 is made of sintered metal material, which can allow solvent media such as gas and liquid to pass through the filtration vessel 210, but does not allow solid particles to pass through the filtration vessel 210, so as to achieve the separation of gas, liquid and solid.

[0054] The switching valve 240 can use a glass stopcock or the like as the valve body.

[0055] The reaction vessel 100 can specifically be a beaker or other experimental vessel made of glass material. Multiple openings can be arranged on the side of the reaction vessel 100, or one opening is located at the top and the remaining openings are located on the side.

[0056] Using the above-mentioned laboratory filtration device, the implementation process of the filtration operation is as follows:

[0057] 1. Place the laboratory filtration device into the reaction vessel 100;

[0058] 2. Replace the air in the reaction vessel 100 with nitrogen or other inert gases;

[0059] 3. Add reactants and react under appropriate conditions until the reaction ends;

[0060] 4. Move the magnetic adsorption mechanism 300 outside the reaction vessel 100 and drive the filtration vessel 210 to move to the bottom of the reaction vessel 100, as Figure 6 shown;

[0061] 5. Open the switching valve 240 and connect it to an external liquid storage device, and replace the external liquid storage device to an anhydrous and anaerobic environment;

[0062] 6. Pressurize the reaction vessel 100 with nitrogen or other inert gases so that the liquid in the reaction vessel 100 can be transported to an external liquid storage device through a laboratory filtration device;

[0063] 7. Inject a suitable solvent that has been dehydrated and deoxygenated into the reaction vessel 100 through a syringe to wash the filtered solid;

[0064] 8. Repeat the operation in step 5;

[0065] 9. If necessary, repeat the operations in steps 6 and 7 until the reaction solution is washed clean;

[0066] 10. Complete the filtration operation;

[0067] 11. Perform other suitable operations according to the requirements of the process operation.

[0068] In the description of the present application, it should be understood that for the orientation description, such as up, down, inside, outside, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0069] In the description of the present application, the meaning of "plural" is more than two. If the first and second are described, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0070] In the description of the present application, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0071] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0072] Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only for helping to understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A filtering device for laboratory use, characterized in that Applied to a reaction vessel, an opening is provided on the reaction vessel, and a sealing plug is provided on the opening; The laboratory filtration device includes a filtration container, a connecting pipe, and a switching valve. The filtration container is disposed inside the reaction vessel and is used for filtering the reaction medium. The connecting pipe penetrates through the sealing plug. One end of the connecting pipe is connected in series with the switching valve, and the other end of the connecting pipe communicates with the filtration container.

2. The filtering device for laboratory use according to claim 1, characterized in that, The filtration container can move relative to the reaction vessel so that when non-filtration operation is performed, the filtration container is away from the reaction medium in the reaction vessel, and when filtration operation is performed, the filtration container is located in the reaction medium in the reaction vessel.

3. The filtering device for laboratory use according to claim 2, characterized in that, It further includes a magnetic adsorption mechanism; The connecting pipe and the filtration container are connected by a flexible hose, and a magnetic medium layer for magnetic adsorption with the magnetic adsorption mechanism is provided on the filtration container.

4. The filtering device for laboratory use according to claim 3, characterized in that, The filtration container is a cavity structure with an opening. When the opening of the filtration container fits against the inner wall of the reaction vessel, a filtration cavity can be formed.

5. The filtering device for laboratory use according to claim 4, wherein The magnetic medium layer is disposed at the opening of the filtration container.

6. The filtering device for laboratory use according to claim 3, characterized in that, A reinforcing pipe is provided at the connection between the flexible hose and the filtration container.

7. The filtering device for laboratory use according to claim 3, wherein The outer side of the magnetic medium layer is coated with a corrosion-resistant layer.

8. The filtering device for laboratory use according to claim 3, wherein, The inner wall curvature of the magnetic adsorption mechanism is the same as the outer wall curvature of the reaction vessel.

9. The laboratory filtration device according to claim 2, characterized in that, The connecting pipe is slidably connected to the sealing plug.

10. The filtering device for laboratory use according to claim 1, characterized in that, The filtration container is a filtration container made of porous ceramic material, or the filtration container is a filtration container made of sintered metal material.

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