Chemical reaction and solid-liquid separation device
By designing chemical reaction and solid-liquid separation devices, using threaded connections between the intermediate tube and the filter membrane and inert gas replacement, the pollution problem during solid-liquid separation after chemical reaction is solved, and solid-liquid separation under oxygen-free conditions is achieved to ensure product purity.
Patent Information
- Application Number
- CN202422535080.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-21
AI Technical Summary
In the prior art, when the chemical reaction is completed, it is poured into the suction filter funnel for solid-liquid separation, it cannot be performed under the condition of isolating the external air, resulting in the possibility of contamination of the solid product.
A chemical reaction and solid-liquid separation device is designed, including an intermediate tube, a first reaction bottle, a second reaction bottle and a filter membrane. Solid-liquid separation is achieved through threaded connections, and an inert gas replacement device is provided in the device to isolate the external gas, and solid-liquid separation is performed using the filter membrane.
It realizes solid-liquid separation under the condition of isolating external gases, avoids contamination of solid products, has a simple structure and is suitable for reactions that require anaerobic conditions.
Smart Images
Figure CN223299997U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical reaction solid-liquid separation, and more particularly to a chemical reaction and solid-liquid separation device. Background Art
[0002] In existing laboratories, chemical reactions and filtration operations are mostly performed separately. That is, multiple reactants are added to a reaction bottle and chemical reactions are carried out separately. After the reaction is completed, the reactants and products are poured into a suction funnel and allowed to settle or a vacuum pump is used for solid-liquid separation to obtain the generated solid product.
[0003] However, some chemical reactions in the prior art need to be carried out in an airtight environment. When the substances in the reaction flask are poured into the suction funnel after the chemical reaction, they will inevitably come into contact with air, which may contaminate the solid products generated by the chemical reaction.
[0004] Therefore, how to provide a device that can achieve chemical reaction and solid-liquid separation under the condition of isolation from the outside air is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content
[0005] In view of this, in order to solve the technical problem in the prior art that there is no instrument that can complete chemical reaction and solid-liquid separation under the condition of isolation from the outside air, the utility model provides a chemical reaction and solid-liquid separation device.
[0006] The utility model provides a chemical reaction and solid-liquid separation device, comprising an intermediate tube, a first reaction bottle, a second reaction bottle and a filter membrane; the first pipe mouth and the second pipe mouth of the intermediate tube are arranged up and down and the inner walls thereof are both processed with internal threads; the bottle mouth of the first reaction bottle is threadedly connected to the first pipe mouth of the intermediate tube; the bottle mouth of the second reaction bottle is threadedly connected to the second pipe mouth of the intermediate tube; the filter membrane is arranged in the intermediate tube, and the circumferential side end thereof is fixed on the inner wall of the intermediate tube; the second reaction bottle is arranged up and down with the first reaction bottle, and the first reaction bottle and the second reaction bottle can be inverted for solid-liquid separation.
[0007] Through the above technical solution, the utility model provides a chemical reaction and solid-liquid separation device. After the chemical reaction in the first reaction bottle is completed, the device is directly inverted, and the solution in the first reaction bottle passes through the filter membrane into the second reaction bottle. The solid matter is blocked by the filter membrane and remains in the first reaction bottle to achieve solid-liquid separation. The device can complete solid-liquid separation under the condition of isolating from external gas to obtain a solid product, and the device has a simple structure and is easy to control and operate.
[0008] Preferably, the intermediate tube is further provided with an air inlet and an air exhaust hole, and the air inlet and the air exhaust hole are correspondingly arranged on a side of the filter membrane close to the second reaction bottle, and the air inlet and the air exhaust hole can be blocked by a sealing plug.
[0009] Preferably, the filter membrane has filter holes, and the pore size of the filter holes is 0.5 μm-100 μm.
[0010] Preferably, a chemical reaction and solid-liquid separation device further comprises a vacuum filtration device capable of accelerating the filtration speed, and the air inlet of the vacuum filtration device is connected to the air inlet hole through an air pipe.
[0011] Preferably, a chemical reaction and solid-liquid separation device further includes an inert gas replacement device capable of replacing the gas in the first reaction bottle and the second reaction bottle, and the air inlet of the inert gas replacement device is connected to the air inlet hole through an air pipe.
[0012] The beneficial effect of adopting the above technical solution is that the inert gas replacement device can pass inert gas into the first reaction bottle and the second reaction bottle through the air pipe, which can squeeze the gas in the first reaction bottle and the second reaction bottle to the outside, and discharge the gas before replacement from the device through the exhaust hole, so that the internal environment of the first reaction bottle and the second reaction bottle is isolated from the external gas.
[0013] Preferably, the inert gas replacement device is a nitrogen cylinder or a carbon dioxide cylinder.
[0014] Preferably, the filter membrane is a nylon membrane.
[0015] The beneficial effect of adopting the above technical solution is that the nylon membrane has strong corrosion resistance, good toughness and high tensile strength.
[0016] Preferably, the air pipe is a polytetrafluoroethylene hose.
[0017] The beneficial effect of adopting the above technical solution is that the polytetrafluoroethylene hose is resistant to high temperatures and has excellent corrosion resistance.
[0018] Preferably, a one-way valve is installed on the air pipe.
[0019] Preferably, the capacity of the first reaction flask and the second reaction flask are both 2L. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0021] Figure 1 This is a schematic diagram of the first reaction bottle, the second reaction bottle and the intermediate tube in the present invention after being disassembled;
[0022] Figure 2 This is a cross-sectional view of the intermediate tube of the present invention;
[0023] Figure 3 This is a schematic diagram of the connection between the first reaction bottle, the second reaction bottle, the intermediate tube and the vacuum filtration device in the present invention;
[0024] Figure 4 This is a schematic diagram of the connection between the first reaction bottle, the second reaction bottle, the intermediate tube and the inert gas replacement device in the present invention.
[0025] In the figure: 1-middle tube, 2-first reaction bottle, 3-second reaction bottle, 4-filter membrane, 5-vacuum filtration device, 6-inert gas replacement device, 11-first pipe opening, 12-second pipe opening, 13-air inlet, 14-exhaust hole. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0027] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.
[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0029] See attached Figures 1 to 4 , is a chemical reaction and solid-liquid separation device of the present invention, comprising an intermediate tube 1, a first reaction bottle 2, a second reaction bottle 3 and a filter membrane 4; the first pipe opening 11 and the second pipe opening 12 of the intermediate tube 1 are arranged vertically and the inner walls thereof are both processed with internal threads; the bottle opening of the first reaction bottle 2 is threadedly connected to the first pipe opening 11 of the intermediate tube 1; the bottle opening of the second reaction bottle 3 is threadedly connected to the second pipe opening 12 of the intermediate tube 1; the filter membrane 4 is arranged in the intermediate tube 1, and the circumferential side ends thereof are fixed to the inner wall of the intermediate tube 3; the second reaction bottle 3 is arranged vertically with the first reaction bottle 2, and the first reaction bottle 2 and the second reaction bottle 3 can be inverted for solid-liquid separation.
[0030] The outer walls of the first reaction bottle and the second reaction bottle at the bottle openings are both processed with threads.
[0031] In practical use, this device can be applied to any biological or chemical reaction that produces solids, such as the reaction of calcium chloride solution and carbon dioxide to produce calcium carbonate. Solid-liquid separation reactions are very common in pharmaceutical manufacturing companies. Solid-liquid separation not only separates the products, but also facilitates the forward progress of the chemical reaction after product separation, making the reaction more thorough.
[0032] In some specific examples, the intermediate tube 1 is further provided with an air inlet 13 and an air exhaust 14, which are correspondingly arranged on the side of the filter membrane 4 close to the second reaction bottle 3, and the air inlet 13 and the air exhaust 14 can be sealed by a sealing plug.
[0033] The air inlet 13 and the air outlet 14 in this experimental device can also be used to add chemical reaction raw materials. For example, after the reaction in the first reaction bottle 2 is completed, it is inverted to separate the solid product from the reaction liquid, and the liquid enters the second reaction bottle 3 through the filter membrane. At this time, the raw materials required for the second chemical reaction can be added to the air inlet 13 or the air outlet 14 for a secondary reaction.
[0034] Specifically, the filter membrane 4 has filter holes with a pore size of 0.5 μm-100 μm, which can filter organic compounds or inorganic compounds.
[0035] In some embodiments, a chemical reaction and solid-liquid separation device further includes a vacuum filtration device 5 that can accelerate the filtration speed, and the air inlet of the vacuum filtration device 5 is connected to the air inlet hole 13 through an air pipe.
[0036] During vacuum filtration, the exhaust hole 14 can also be opened to keep the air pressure in the first reaction bottle and the second reaction bottle balanced with the external air pressure.
[0037] In other embodiments, a chemical reaction and solid-liquid separation device further includes an inert gas replacement device 6 that can replace the gas in the first reaction bottle 2 and the second reaction bottle 3, and the air inlet of the inert gas replacement device 6 is connected to the air inlet hole 13 through an air pipe.
[0038] When the inert gas replacement device 6 delivers the inert gas into the first reaction bottle and the second reaction bottle through the air inlet 13, the exhaust hole 14 can be opened to form an air pressure balance between the intake and exhaust.
[0039] Specifically, the inert gas replacement device 6 is a nitrogen cylinder or a carbon dioxide cylinder.
[0040] Specifically, the filter membrane 4 is a nylon membrane.
[0041] Specifically, the air pipe is a polytetrafluoroethylene hose.
[0042] Specifically, a one-way valve is installed on the air pipe.
[0043] Specifically, the capacity of the first reaction bottle 2 and the second reaction bottle 3 are both 2L.
[0044] When this experimental device is actually used, multiple reactants are added to the first reaction bottle to carry out a chemical reaction. For example, under certain reaction conditions such as time, temperature, and pressure, two liquid reaction raw materials generate reaction products, wherein the reaction products are solid or solid-liquid mixtures. The experimental operation in the prior art is to pour the product after the reaction from the reaction bottle, and then perform vacuum filtration to separate the solid and liquid. However, this operation will lead to an increase in by-products in some reactions that require special conditions (anaerobic conditions) to be carried out. The utility model solves this problem. After the reactants have finished reacting in the first reaction bottle, they can be directly inverted. The filter membrane in the middle tube can complete the solid-liquid separation, separate the product and impurities or solvent, and promote the forward progress of the reaction. There is no need to replace the reaction device or contact external oxygen. After the filtration is completed, a solid product can be obtained.
[0045] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A chemical reaction and solid-liquid separation device, characterized in that: include: An intermediate pipe (1), wherein a first pipe opening (11) and a second pipe opening (12) of the intermediate pipe (1) are arranged vertically and internal threads are processed on the inner walls of the intermediate pipe (1); a first reaction bottle (2), wherein the bottle mouth of the first reaction bottle (2) is threadedly connected to the first pipe mouth (11) of the intermediate pipe (1); a second reaction bottle (3), the bottle mouth of the second reaction bottle (3) being threadedly connected to the second pipe mouth (12) of the intermediate pipe (1); a filter membrane (4), the filter membrane (4) being arranged in the intermediate tube (1), and having its peripheral end fixed on the inner wall of the intermediate tube (1); The second reaction bottle (3) and the first reaction bottle (2) are arranged above each other, and the first reaction bottle (2) and the second reaction bottle (3) can be inverted to perform solid-liquid separation.
2. A chemical reaction and solid-liquid separation device according to claim 1, characterized in that: The intermediate tube (1) is further provided with an air inlet (13) and an air outlet (14), and the air inlet (13) and the air outlet (14) are correspondingly arranged on a side of the filter membrane (4) close to the second reaction bottle (3), and the air inlet (13) and the air outlet (14) can be sealed by a sealing plug.
3. A chemical reaction and solid-liquid separation device according to claim 1, characterized in that: The filter membrane (4) is provided with filter holes, and the pore size of the filter holes is 0.5 μm-100 μm.
4. A chemical reaction and solid-liquid separation device according to claim 2, characterized in that: It also includes a vacuum filtration device (5) capable of accelerating the filtration speed, wherein the air inlet of the vacuum filtration device (5) is connected to the air inlet hole (13) via an air pipe.
5. A chemical reaction and solid-liquid separation device according to claim 2, characterized in that: It also includes an inert gas replacement device (6) capable of replacing the gas in the first reaction bottle (2) and the second reaction bottle (3), and the gas inlet of the inert gas replacement device (6) is connected to the gas inlet hole (13) through an air pipe.
6. A chemical reaction and solid-liquid separation device according to claim 5, characterized in that: The inert gas replacement device (6) is a nitrogen cylinder or a carbon dioxide cylinder.
7. The chemical reaction and solid-liquid separation device according to claim 1, characterized in that: The filter membrane (4) is a nylon membrane.
8. A chemical reaction and solid-liquid separation device according to any one of claims 4 or 5, characterized in that: The air pipe is a polytetrafluoroethylene hose.
9. A chemical reaction and solid-liquid separation device according to any one of claims 4 or 5, characterized in that: A one-way valve is installed on the air pipe.
10. The chemical reaction and solid-liquid separation device according to claim 1, characterized in that: The capacity of the first reaction flask (2) and the second reaction flask (3) are both 2L.