Recrystallization purification experimental device

Abstract

The utility model discloses a recrystallization purification experimental device which comprises a base, a first sample pool, a second sample pool and a filtering component, the base has a first mounting portion and a second mounting portion. And the first mounting part is arranged on the rear side above the second mounting part. The first sample cell is detachably arranged on the first mounting part, a heating component is arranged in the first sample cell, and the bottom is communicated with a first valve body; the second sample cell is detachably arranged on the second mounting part, and the bottom is communicated with a second valve body. The filter member has an inlet and an outlet. Wherein the inlet of one filtering component is communicated with the first valve body, and the outlet of the filtering component is arranged above the second sample cell. And the inlet of the other filtering component is communicated with the second valve body. The recrystallization and purification experiment device disclosed by the utility model can be used for conveniently carrying out a recrystallization and purification experiment and is high in flexibility.

Description

Technical Field

[0001] This utility model relates to the field of recrystallization and purification technology, and in particular to a recrystallization and purification experimental apparatus. Background Technology

[0002] Traditional recrystallization apparatus is relatively complex to operate. For researchers, multiple tedious steps are required to complete the recrystallization purification process. This not only increases the operational difficulty but also increases the risk of operational errors due to the numerous steps, affecting the accuracy of experimental results. Secondly, the recrystallization efficiency of existing technologies is often low. Due to limitations in the apparatus design, the time spent in each stage, such as heating, dissolving, and cooling crystallization, is lengthy, failing to achieve rapid and efficient purification of substances, thus wasting a significant amount of time and energy. Utility Model Content

[0003] The purpose of this invention is to provide a recrystallization purification experimental apparatus to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] A recrystallization purification experimental apparatus includes: a base, a first sample cell, a second sample cell, and a filter component;

[0006] The base has a first mounting part and a second mounting part, wherein the first mounting part is located above and behind the second mounting part;

[0007] The first sample cell is detachably mounted on the first mounting part, and is equipped with a heating component inside, with a first valve body connected to its bottom.

[0008] The second sample cell is detachably mounted on the second mounting part, and the bottom is connected to the second valve body;

[0009] The filter element has an inlet and an outlet, wherein the inlet of one filter element is connected to the first valve body and the outlet is located above the second sample cell; the inlet of the other filter element is connected to the second valve body.

[0010] The recrystallization purification experimental apparatus provided by this utility model has at least the following beneficial effects: the raw material can be heated and dissolved in the first sample cell. The first and second mounting parts, which are set at different heights, allow the hot saturated solution in the first sample cell to automatically flow into the second sample cell when the first valve is opened, and impurities are filtered out through the filter component during this process. The target substance recrystallizes and precipitates in the second sample cell, and the waste liquid can be discharged through the second valve for recovery or treatment, while the target substance is retained through the filter component during this process. The timing of the discharge from the first and second sample cells can be controlled separately by the first and second valves, making the operation more flexible and convenient. Both the first and second sample cells can be detached, and the thermal dissolution process and the crystallization process can be carried out independently, greatly improving flexibility and utilization.

[0011] As a further improvement to the above technical solution, both the first mounting part and the second mounting part are groove structures, and the shapes of the first mounting part and the second mounting part are respectively consistent with the bottom shapes of the first sample pool and the second sample pool.

[0012] As a further improvement to the above technical solution, the bottom of the first sample cell is tilted downwards and connected to the first valve body.

[0013] As a further improvement to the above technical solution, the bottom of the second sample cell is tilted downwards and connected to the second valve body.

[0014] As a further improvement to the above technical solution, a filter membrane placement groove is provided at the bottom of the second sample cell.

[0015] As a further improvement to the above technical solution, the filter component includes a first housing and a second housing, the first housing and the second housing are sealed together, the outlet and the inlet are respectively located in the first housing and the second housing, and a filter membrane is provided between the first housing and the second housing.

[0016] As a further improvement to the above technical solution, the inlet is provided with a union, which is connected to the first valve body or the second valve body.

[0017] As a further improvement to the above technical solution, a drying box is provided on the lower side of the first mounting part, and a pull-out temperature control box is provided inside the drying box.

[0018] As a further improvement to the above technical solution, the second sample pool is provided with a filter paper tray, and the temperature control box has an internal space for placing the filter paper tray.

[0019] As a further improvement to the above technical solution, the temperature control box is slidably disposed inside the drying oven in the left-right direction, and a push-pull handle is provided on the left or right side of the temperature control box. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the recrystallization and purification experimental apparatus provided by this utility model;

[0022] Figure 2 This is a three-dimensional exploded view of an embodiment of the recrystallization and purification experimental apparatus provided by this utility model;

[0023] Figure 3 This is a side sectional view of an embodiment of the recrystallization purification experimental apparatus provided by this utility model;

[0024] Figure 4 This is a flowchart of one embodiment of the recrystallization and purification experimental apparatus provided by this utility model.

[0025] In the diagram: 100-base, 110-first mounting part, 120-second mounting part, 130-avoiding groove, 140-drying oven, 150-temperature control box, 151-push-pull handle, 160-filter paper tray, 200-first sample cell, 210-first valve body, 220-heating component, 300-second sample cell, 310-second valve body, 400-filter component, 410-first filter, 420-second filter, 430-first housing, 440-second housing, 450-filter membrane, 460-merchandising connector. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Reference Figures 1 to 4 The recrystallization purification experimental apparatus of this utility model is illustrated in the following embodiments:

[0031] A recrystallization purification experimental apparatus includes: a base 100, a first sample cell 200, a second sample cell 300, and a filter component 400.

[0032] The base 100 has a first mounting portion 110 and a second mounting portion 120.

[0033] The first mounting portion 110 and the second mounting portion 120 are staggered and arranged at different heights. The first mounting portion 110 is located above and behind the second mounting portion 120.

[0034] The first sample cell 200 is detachably mounted on the first mounting portion 110, and the second sample cell 300 is detachably mounted on the second mounting portion 120. A heating element 220 is provided inside the first sample cell 200. A first valve body 210 is connected to the bottom of the first sample cell 200. A second valve body 310 is connected to the bottom of the second sample cell 300.

[0035] In this embodiment, both the first sample cell 200 and the second sample cell 300 are open containers at the top. Both the first sample cell 200 and the second sample cell 300 have a cavity for holding a solution. The first valve body 210 is connected to the cavity of the first sample cell 200, and the second valve body 310 is connected to the cavity of the second sample cell 300.

[0036] There are two filter elements 400. Both filter elements 400 have an inlet and an outlet. The inlet of one filter element 400 is connected to the first valve body 210, and the outlet is located above the second sample pool 300. The inlet of the other filter element 400 is connected to the second valve body 310.

[0037] In practical use, the raw material can be heated and dissolved in the first sample cell 200. The first mounting part 110 and the second mounting part 120 are set at different heights, so that the hot saturated solution in the first sample cell 200 can automatically flow into the second sample cell 300 when the first valve body 210 is opened, and impurities are filtered through the filter component 400 during this process. The target substance recrystallizes and precipitates in the second sample cell 300, and the waste liquid can be discharged through the second valve body 310 for recovery or treatment, and the target substance is retained through the filter component 400 during this process. The timing of liquid discharge from the first sample cell 200 and the second sample cell 300 can be controlled separately by the first valve body 210 and the second valve body 310, making the operation more flexible and convenient. Both the first sample cell 200 and the second sample cell 300 can be detached, and the hot dissolution process and the crystallization process can be carried out independently, which greatly improves flexibility and utilization. When crystallization occurs in the second sample cell 300, the first sample cell 200 can be disassembled and cleaned; during the thermal dissolution process of the first sample cell 200, the second sample cell 300 can be disassembled and cleaned or the target substance can be extracted.

[0038] In this embodiment, both the first mounting portion 110 and the second mounting portion 120 are recessed structures. The shapes of the first mounting portion 110 and the second mounting portion 120 are consistent with the bottom shapes of the first sample cell 200 and the second sample cell 300, respectively. The first sample cell 200 and the second sample cell 300 can be directly embedded in the first mounting portion 110 and the second mounting portion 120, and can be lifted upwards for disassembly when needed. Under their own weight and the action of the solution inside, the first sample cell 200 and the second sample cell 300 can be pressed downwards into the first mounting portion 110 and the second mounting portion 120. Referring to the accompanying drawings, in the vertical projection, both the first mounting portion 110 and the second mounting portion 120 are rectangular. Both the first sample cell 200 and the second sample cell 300 are box-shaped.

[0039] To avoid obstructing the first valve body 210 or the second valve body 310, the front ends of the first mounting part 110 and the second mounting part 120 are each provided with a clearance groove 130 corresponding to the first valve body 210 or the second valve body 310.

[0040] In this embodiment, the first valve body 210 is located at the front of the first sample cell 200, and the second valve body 310 is located at the front of the second sample cell 300. To reduce waste caused by solution residue, the bottom of the first sample cell 200 in this embodiment is inclined downwards at the front end, and the first valve body 210 is connected to the lowest point at the front end of the bottom of the first sample cell 200, so that the solution can be completely drained. In other embodiments, the bottom of the second sample cell 300 may also be configured to be inclined downwards at the front end and connected to the second valve body 310.

[0041] like Figure 3 As shown, a heating element 220 is provided at the bottom of the first sample cell 200. In this embodiment, the heating element 220 is a heating wire. The heating wire is arranged in a serpentine bend along the bottom of the first sample cell 200. A conductive wire and an electrical connector electrically connected to the heating element 220 are provided on the rear side of the first sample cell 200.

[0042] In a further embodiment, the base 100 is provided with a socket located beside the first mounting portion 110. After the first sample cell 200 is installed in the first mounting portion 110, it can draw power through the socket to enable the heating element 220 to operate and heat the sample. To improve safety, the first mounting portion 110 is provided with a sensing element or proximity switch electrically connected to the socket. The sensing element or proximity switch detects the first sample cell 200, thereby controlling the on / off state of the socket and preventing the heating element 220 from remaining energized while the first sample cell 200 is detached from the base 100.

[0043] The target analyte crystallizes and precipitates in the second sample cell 300. To facilitate collection, a filter membrane placement groove is provided at the bottom of the second sample cell 300. In actual use, the crystallized filter membrane is first placed at the bottom of the second sample cell 300, and then the solution is injected into the second sample cell 300.

[0044] like Figure 2 and Figure 3 As shown, in this embodiment, the filter component 400 is cylindrical. The filter component 400 has a first housing 430 and a second housing 440 arranged axially. The first housing 430 and the second housing 440 are sealed together to form a filter chamber. The inlet and outlet are respectively located in the first housing 430 and the second housing 440 and communicate with the filter chamber. A filter membrane 450 is disposed between the first housing 430 and the second housing 440.

[0045] The first housing 430 and the second housing 440 are threaded together so that the filter membrane 450 can be clamped in the middle of the filter chamber, thereby achieving the retention of insoluble matter. The first housing 430 and the second housing 440 are detachable, making it convenient to remove the retained matter or replace the filter membrane 450.

[0046] Reference Figure 2The filter element 400 connected to the first valve body 210 is designated as the first filter 410, and the filter element 400 connected to the second valve body 310 is designated as the second filter 420. Depending on the relative position of the front port of the first valve body 210 and the first sample cell 200, the inlet of the first filter 410 can be configured to extend axially along the filter element 400 or employ an elbow structure, allowing the outlet of the first filter 410 to be positioned above the second sample cell 300. The outlet of the second filter 420 can be located above a laboratory drain, or the solution can be drained via an external water pipe.

[0047] In this embodiment, each inlet is equipped with a union 460, which is connected to the front outlet of the first valve body 210 or the second valve body 310. Taking the union structure of the first valve body 210 and the first filter 410 as an example: the front end of the first valve body 210 is provided with external threads. The end of the inlet is provided with an annular flange, and the union 460 is movably fitted onto the end of the inlet. When connecting the first valve body 210 and the first filter 410, the annular flange abuts against the front end of the first valve body 210, and the union 460 is threaded onto the front end of the first valve body 210, thus abutting the annular flange against the filter. Furthermore, to enhance the sealing performance between the inlet and the first valve body 210, an annular sealing gasket can be provided between the front end of the first valve body 210 and the annular flange. The outer periphery of the union 460 is hexagonal prism-shaped, facilitating screwing and disassembly.

[0048] The base 100 in this embodiment is also provided with a drying chamber 140. The drying chamber 140 is located below the first mounting part 110, and a pull-out temperature control box 150 is provided inside the drying chamber 140. In actual use, precipitated crystals can be placed in the temperature control box 150, thereby achieving drying treatment inside the drying chamber 140.

[0049] In this embodiment, the drying chamber 140 has an opening on its right side. The temperature control box 150 is slidably disposed within the opening in a left-right direction. The right side of the temperature control box 150 has a push-pull handle 151 for pushing and pulling. The temperature control box 150 can be easily pulled by the push-pull handle 151, thereby placing and removing the crystalline material into and out of the temperature control box 150, thus achieving the drying process.

[0050] In this embodiment, both the second sample cell 300 and the temperature control box 150 are rectangular parallelepipeds. Both the temperature control box 150 and the second sample cell 300 have internal space for placing the filter paper tray 160. The filter paper tray 160 has a flat plate with multiple mesh openings. The filter paper tray 160 also has handles extending vertically on both sides. In actual use, the filter paper tray 160 is first placed at the bottom of the second sample cell 300, and a filter membrane 450 is laid on top of it. After the target substance crystallizes, the filter paper tray 160 and filter membrane 450 are removed from the second sample cell 300 using the handles, transferring the target substance crystals to the temperature control box 150, thereby achieving the drying process.

[0051] See attached document Figure 4 When using the recrystallization purification experimental apparatus of this utility model for recrystallization purification:

[0052] First, the first sample cell 200 is placed in the first mounting part 110. The object to be purified and its solvent are added to the first sample cell 200, and the heating element is activated to heat and dissolve it.

[0053] After the sample is dissolved, the crystallized filter membrane is laid at the bottom of the second sample cell 300, and the first filter 410 is connected to the first valve body 210 through the union joint 460.

[0054] Next, open the first valve body 210. At this time, the solution flows through the first filter 410 into the second sample cell 300, while impurities are trapped on the filter membrane 450 of the first filter 410, achieving separation of the target solution and impurities. Disassemble and replace the first filter 410 or its filter membrane 450.

[0055] Then, the second filter 420 is connected to the second valve body 310 via the union connector 460. After the solution in the second sample cell 300 cools and crystallizes, the second valve body 310 is opened to discharge the wastewater, while the target crystals are trapped on the crystallization filter membrane and the filter membrane 450 of the second filter 420, thus achieving the extraction of the target.

[0056] Finally, the target crystal, along with the crystallization filter membrane and the filter membrane 450 of the second filter 420, is placed in the temperature control box 150 and pushed into the drying oven 140 for drying, thus completing the recrystallization and purification process.

[0057] It is worth noting that both the first filter 410 and the second filter 420 can be disassembled and replaced via a union. When conditions permit, a new filter element 400 can be directly replaced between multiple recrystallization purifications, or the filter membrane 450 in the filter element 400 can be replaced to meet the purification requirements.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art can make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention. All such changes, modifications, equivalent alterations or substitutions are included within the scope defined by the claims of this application, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A recrystallization purification experimental apparatus, characterized in that: include: The base has a first mounting part and a second mounting part, wherein the first mounting part is located above and rear of the second mounting part; The first sample cell is detachably installed in the first mounting part, and a heating element is provided inside it. The bottom is connected to the first valve body. The second sample cell is detachably installed in the second mounting part, and the bottom is connected to the second valve body; A filter element has an inlet and an outlet, wherein the inlet of one filter element is connected to the first valve body and the outlet is located above the second sample cell; the inlet of the other filter element is connected to the second valve body.

2. The recrystallization purification experimental apparatus according to claim 1, characterized in that: Both the first mounting part and the second mounting part are groove structures, and the shapes of the first mounting part and the second mounting part are consistent with the bottom shapes of the first sample cell and the second sample cell, respectively.

3. The recrystallization purification experimental apparatus according to claim 1, characterized in that: The bottom of the first sample cell is tilted downwards and connected to the first valve body.

4. The recrystallization purification experimental apparatus according to claim 1, characterized in that: The bottom of the second sample cell is tilted downwards and connected to the second valve body.

5. The recrystallization purification experimental apparatus according to claim 1, characterized in that: The bottom of the second sample cell is provided with a filter membrane placement groove.

6. The recrystallization purification experimental apparatus according to claim 1, characterized in that: The filter component includes a first housing and a second housing, which are sealed together. The outlet and inlet are respectively located in the first housing and the second housing, and a filter membrane is provided between the first housing and the second housing.

7. The recrystallization purification experimental apparatus according to claim 6, characterized in that: The inlet is equipped with a union, which is connected to either the first valve body or the second valve body.

8. The recrystallization purification experimental apparatus according to claim 1, characterized in that: A drying box is provided on the lower side of the first mounting part, and a pull-out temperature control box is provided inside the drying box.

9. The recrystallization purification experimental apparatus according to claim 8, characterized in that: The second sample pool is equipped with a filter paper tray, and the temperature control box has an internal space for placing the filter paper tray.

10. The recrystallization purification experimental apparatus according to claim 8, characterized in that: The temperature control box is slidably disposed inside the drying oven in the left-right direction, and a push-pull handle is provided on the left or right side of the temperature control box.

Images