A laboratory rectification apparatus

Abstract

The utility model provides a laboratory rectifying column device relates to experimental instrument technical field, including distilling flask, rectifying column, condenser pipe, collecting bottle, three -way pipe, filter mechanism and auxiliary part and multistage pipeline, through the filter mechanism and the three -way pipe of adding in condenser pipe export end constitute the double passageway system, when the solid impurity is contained in the fraction, the first pipeline is blocked, and the fraction can enter the collecting bottle after the impurity is intercepted by the filter mechanism, and subsequent manual filtration is not needed, the solid bin and liquid bin in the filter mechanism are zoned design, can high -efficient separation solid impurity and target fraction, make the fraction purity promotion, solved the problem that the existing device fraction direct collection leads to the problem of insufficient purity, aiming at different fraction characteristics, can choose the passageway flexibly: when processing pure liquid fraction, the second pipeline is blocked to realize direct collection, keep the high efficiency of traditional device, when processing the fraction containing solid impurity, switch to the filter passageway, need not to replace the whole set of device, improved the equipment utilization.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, and in particular to a laboratory distillation apparatus. Background Technology

[0002] Laboratory distillation is a core experimental method for separating multi-component mixtures. Its principle is to separate the components by utilizing the difference in boiling points of the components in the mixture through gas-liquid exchange in the distillation column. The fraction is then liquefied and collected by the condenser. Existing laboratory distillation apparatuses typically include core components such as a distillation flask, a distillation column, a condenser, a collection flask, and connecting pipelines. After the distillation product is heated and vaporized in the distillation flask, the gas phase separated by the distillation column enters the condenser for liquefaction and finally flows into the collection flask through the pipeline for collection.

[0003] However, when existing devices process mixtures containing soluble impurities or easily crystallizing components, some impurities precipitate from the distillate due to the sudden drop in temperature after the gas phase is liquefied by the condenser, forming solid particles. Since the distillation path of the existing device is a single, non-switchable structure, these solid particles will directly enter the collection bottle with the liquid distillate, resulting in a decrease in the purity of the target distillate. If pure liquid is required, the distillate must be transferred to a funnel for manual filtration. This process not only increases the number of experimental steps but also easily causes the loss of a small amount of distillate.

[0004] Therefore, it is necessary to provide a new laboratory distillation apparatus to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a laboratory distillation apparatus.

[0006] This utility model provides a laboratory distillation apparatus comprising: a distillation flask, a distillation column, a condenser, and a collection flask. The mouth of the distillation flask is connected to the distillation column, and the top of the distillation column is connected to the inlet end of the condenser via a pipeline. The outlet end of the condenser is connected to a T-junction, which has a first interface, a second interface, and a third interface. The first interface is connected to the outlet end of the condenser via a pipeline, the second interface is connected to the collection flask via the first pipeline, and the third interface is connected to a filter mechanism via a second pipeline. The end of the filter mechanism away from the second pipeline is connected to the collection flask via the third pipeline. When the first pipeline is blocked, the fraction flowing out of the condenser is filtered by the filter mechanism and enters the collection flask. When the second pipeline is blocked, the fraction flowing out of the condenser directly enters the collection flask via the first pipeline.

[0007] Preferably, the first pipe is provided with a flexible hose section one at the connection between the first pipe and the three-way glass tube, the first pipe is provided with a flexible hose section two at the connection between the first pipe and the collection bottle, the second pipe is provided with a flexible hose section three at the connection between the second pipe and the three-way glass tube, and the third pipe is provided with a flexible hose section four at the connection between the third pipe and the collection bottle.

[0008] Preferably, the second hose segment is provided with a first water-stop clamp, and the third hose segment is provided with a second water-stop clamp. Both the first and second water-stop clamps are plastic water-stop clamps with anti-slip texture.

[0009] Preferably, the filtration mechanism includes a filter tube and a filter screen fixed inside the filter tube. The filter screen divides the filter tube into a solid chamber near the second pipeline and a liquid chamber away from the second pipeline. The end of the solid chamber away from the liquid chamber is provided with a removable filter tube cover. The end of the liquid chamber away from the solid chamber is provided with a liquid outlet. The third pipeline is sealed to the liquid outlet.

[0010] Preferably, the filter tube cover is connected to the solids chamber by a thread, and a silicone sealing ring is provided at the connection. The outer surface of the filter tube cover is provided with anti-slip ridges.

[0011] Preferably, the first pipe is connected to a horn tube one at one end near the collection bottle, and the third pipe is connected to a horn tube two at one end near the collection bottle. Both the horn tube one and the horn tube two are fitted with rubber stoppers at their ends, and the rubber stoppers are interference-fitted with the mouth of the collection bottle.

[0012] Compared with related technologies, the laboratory distillation apparatus provided by this utility model has the following beneficial effects:

[0013] By adding a filter mechanism and a three-way pipe to the outlet of the condenser tube to form a dual-pass system, when the fraction contains solid impurities, the first pipe can be blocked so that the fraction can pass through the filter mechanism to intercept the impurities before entering the collection bottle, eliminating the need for subsequent manual filtration. The solid and liquid compartments in the filter mechanism are designed to efficiently separate solid impurities from the target fraction, thereby improving the purity of the fraction and solving the problem of insufficient purity caused by direct collection of fractions in existing devices.

[0014] The path can be flexibly selected according to the characteristics of different fractions: when processing pure liquid fractions, the second pipeline can be blocked to achieve direct collection, maintaining the high efficiency of traditional equipment; when processing fractions containing solid impurities, the filter path can be switched, without replacing the entire set of equipment, thus improving equipment utilization. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of a laboratory distillation apparatus provided by this utility model;

[0016] Figure 2 for Figure 1 The diagram shown is a partially enlarged structural schematic.

[0017] Figure 3 for Figure 1 The diagram shows the structure of the filter tube.

[0018] Numbered in the diagram: 1. Distillation flask; 2. Distillation column; 3. Condenser; 4. Collection bottle; 5. T-connector; 6. First port; 7. Second port; 8. Third port; 9. First pipeline; 10. Second pipeline; 11. Third pipeline; 12. Hoses section one; 13. Hoses section two; 14. Hoses section three; 15. Hoses section four; 16. Water-stop clamp one; 17. Water-stop clamp two; 18. Filter tube; 19. Filter screen; 20. Solids compartment; 21. Liquid compartment; 22. Filter tube cap; 23. Liquid outlet; 24. Horn tube one; 25. Horn tube two. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of a preferred embodiment of a laboratory distillation apparatus provided by this utility model; Figure 2 for Figure 1 The diagram shown is a partially enlarged structural schematic. Figure 3 for Figure 1 The diagram shows the structure of the filter tube.

[0021] In the specific implementation process, such as Figures 1-3 As shown, the laboratory distillation apparatus of this utility model mainly consists of a distillation flask 1, a distillation column 2, a condenser 3, a collection flask 4, a three-way pipe 5, a filtration mechanism, and multiple sections of pipelines and auxiliary components. Through the reasonable connection and cooperation of each component, the selective filtration and collection function of the distillate is realized to meet different experimental needs.

[0022] Distillation flask 1 serves as the starting container for the entire distillation process. Its mouth is tightly connected to distillation column 2 to ensure that the vapor generated during distillation can smoothly enter distillation column 2 for separation and purification. The top of distillation column 2 is connected to the inlet end of condenser 3 through the pipe of the spiked fractionating head. The vapor separated by distillation column 2 enters condenser 3 and is cooled and liquefied into fractions in condenser 3. A thermometer is installed at one point of the pipe of the spiked fractionating head to measure the temperature during the distillation process.

[0023] The outlet end of the condenser tube 3 is connected to a three-way pipe 5, which has a first interface 6, a second interface 7, and a third interface 8. The first interface 6 is connected to the outlet end of the condenser tube 3 via a pipeline, serving as the initial channel for the distillate to flow out. The second interface 7 is connected to the collecting bottle 4 via a first pipeline 9, which is the channel through which the distillate directly enters the collecting bottle 4. A flexible hose section 12 is provided at the connection between the first pipeline 9 and the three-way glass tube, and a flexible hose section 13 is provided at the connection between the first pipeline 9 and the collecting bottle 4. A water-stop clamp 16 is provided on the flexible hose section 13. This water-stop clamp is a plastic water-stop clamp with anti-slip texture. By controlling the water-stop clamp 16... The opening and closing of the first pipe 9 can be used to block or open the first pipe 9. The third interface 8 is connected to the filter mechanism through the second pipe 10. The filter mechanism is used to filter the distillate. The connection between the second pipe 10 and the three-way glass tube is provided with a flexible hose section 3 14. The connection between the third pipe 11 and the collection bottle 4 is provided with a flexible hose section 4 15. The flexible hose section 3 14 is provided with a water-stop clamp 2 17, which is also a plastic water-stop clamp with anti-slip texture. By controlling the opening and closing of the water-stop clamp 2 17, the opening or blocking of the second pipe 10 can be controlled. Flexible hose sections 1 12, 13, 14, and 15 are all made of elastic silicone.

[0024] The filtration mechanism includes a filter tube 18 and a filter screen 19 fixed inside the filter tube 18. The filter screen 19 divides the filter tube 18 into a solids chamber 20 near the second pipeline 10 and a liquid chamber 21 away from the second pipeline 10. The end of the solids chamber 20 away from the liquid chamber 21 is provided with a removable filter tube cover 22. The filter tube cover 22 is connected to the solids chamber 20 by threads, and a silicone sealing ring is provided at the connection to ensure sealing performance and prevent distillate leakage. The outer surface of the filter tube cover 22 is provided with anti-slip ridges to facilitate disassembly and installation by operators. The end of the liquid chamber 21 away from the solids chamber 20 is provided with a liquid outlet 23. The third pipeline 11 is sealed to the liquid outlet 23. The distillate filtered by the filter screen 19 enters the third pipeline 11 through the liquid outlet 23 and finally flows into the collection bottle 4.

[0025] The first pipe 9 is connected to a horn tube 24 near the collection bottle 4, and the third pipe 11 is connected to a horn tube 25 near the collection bottle 4. Both the horn tube 24 and the horn tube 25 are fitted with rubber stoppers. The rubber stoppers are press-fitted to the mouth of the collection bottle 4 to ensure a tight connection and prevent the distillate from leaking during the collection process.

[0026] The working principle provided by this utility model is as follows:

[0027] When the experiment does not require filtration of the distillate, the operator clamps the water stop clamp 17 to block the second pipe 10. At this time, the distillate flowing out of the condenser 3 enters the three-way pipe 5 through the first interface 6, and then flows through the second interface 7 and the first pipe 9, and into the collection bottle 4 through the horn tube 24, realizing the direct collection of the distillate.

[0028] When the experiment requires filtration of the distillate, the operator clamps the stop clamp 16 to block the first pipe 9. At this time, the distillate flowing out of the condenser 3 enters the three-way pipe 5 through the first interface 6, and then enters the solid chamber 20 of the filtration mechanism through the third interface 8 and the second pipe 10. Under the action of the filter screen 19, solid impurities are trapped in the solid chamber 20. The filtered distillate enters the liquid chamber 21, and then flows into the collection bottle 4 through the outlet 23 and the third pipe 11, and through the horn tube 25, thus completing the filtration and collection of the distillate.

[0029] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A laboratory distillation apparatus, comprising a distillation flask (1), a distillation column (2), a condenser (3), and a collection flask (4), wherein the mouth of the distillation flask (1) is connected to the distillation column (2), and the top of the distillation column (2) is connected to the inlet end of the condenser (3) via a pipeline, characterized in that, The outlet end of the condenser (3) is connected to a three-way pipe (5). The three-way pipe (5) has a first interface (6), a second interface (7) and a third interface (8). The first interface (6) is connected to the outlet end of the condenser (3) through a pipeline. The second interface (7) is connected to the collection bottle (4) through a first pipeline (9). The third interface (8) is connected to a filter mechanism through a second pipeline (10). The end of the filter mechanism away from the second pipeline (10) is connected to the collection bottle (4) through a third pipeline (11). When the first pipeline (9) is blocked, the fraction flowing out of the condenser (3) enters the collection bottle (4) after being filtered by the filter mechanism. When the second pipeline (10) is blocked, the fraction flowing out of the condenser (3) directly enters the collection bottle (4) through the first pipeline (9).

2. The laboratory distillation apparatus according to claim 1, characterized in that, The first pipe (9) is provided with a flexible hose section 1 (12) at the connection between the first pipe (9) and the three-way glass tube, the first pipe (9) is provided with a flexible hose section 2 (13) at the connection between the first pipe (9) and the collection bottle (4), the second pipe (10) is provided with a flexible hose section 3 (14) at the connection between the second pipe (10) and the three-way glass tube, and the third pipe (11) is provided with a flexible hose section 4 (15) at the connection between the third pipe (11) and the collection bottle (4).

3. The laboratory distillation apparatus according to claim 2, characterized in that, The first section (12) of the hose is provided with a water-stop clamp (16), and the third section (14) of the hose is provided with a water-stop clamp (17). Both the first water-stop clamp (16) and the second water-stop clamp (17) are plastic water-stop clamps with anti-slip texture.

4. The laboratory distillation apparatus according to claim 3, characterized in that, The filtration mechanism includes a filter tube (18) and a filter screen (19) fixed inside the filter tube (18). The filter screen (19) divides the filter tube (18) into a solid chamber (20) near the second pipeline (10) and a liquid chamber (21) away from the second pipeline (10). The solid chamber (20) is provided with a detachable filter tube cover (22) at the end away from the liquid chamber (21). The liquid chamber (21) is provided with a liquid outlet (23) at the end away from the solid chamber (20). The third pipeline (11) is sealed to the liquid outlet (23).

5. The laboratory distillation apparatus according to claim 4, characterized in that, The filter tube cover (22) is connected to the solid container (20) by a thread, and a silicone sealing ring is provided at the connection. The outer surface of the filter tube cover (22) is provided with anti-slip embossing.

6. The laboratory distillation apparatus according to claim 5, characterized in that, The first pipe (9) is connected to a horn tube (24) at one end near the collection bottle (4), and the third pipe (11) is connected to a horn tube (25) at one end near the collection bottle (4). Both the horn tube (24) and the horn tube (25) are fitted with rubber stoppers, and the rubber stoppers are interference-fitted with the mouth of the collection bottle (4).

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