A reflux extraction device with magnetic stirring function

Abstract

The utility model discloses a kind of backflow extraction devices with magnetic stirring function, it includes magnetic stirrer, reaction kettle body, connecting cylinder, screen cylinder, kettle cover and condensation reflux pipe;Reaction kettle body is placed in magnetic stirrer, the top opening of reaction kettle body is threadedly connected with the bottom of connecting cylinder, annular limiting sheet is fixed horizontally in the middle part of connecting cylinder, screen cylinder is installed on annular limiting sheet, and the top opening of screen cylinder is clamped on the upper surface of annular limiting sheet;The top opening of connecting cylinder is threadedly connected with kettle cover, reflux interface is provided in the middle part of kettle cover, and condensation reflux pipe is communicated at reflux interface, and condensation reflux pipe is placed above kettle cover.

Description

Technical Field

[0001] This utility model relates to the technical field of reflux extraction equipment, and in particular to a reflux extraction device with magnetic stirring function. Background Technology

[0002] In the chemical and pharmaceutical industries, common reflux reactors employ mechanical stirring to mix and react materials within the vessel. After reflux extraction, the material must be transferred to filtration equipment for separation. For example, CN202122345678.2, "New Reflux Extraction Equipment," describes a stirring shaft that passes through the vessel wall and connects to a stirring paddle. A motor drives the stirring shaft to rotate, which in turn drives the paddle for stirring. However, this equipment is prone to creating dead zones (such as the bottom and edges of the reactor body), resulting in uneven mixing of materials and solvents and low dissolution efficiency of active ingredients. Furthermore, the sealing structure at the contact point between the stirring shaft and the vessel lid is prone to aging and failure, leading to solvent leakage or contamination of the extract by external impurities. Additionally, external filtration equipment is cumbersome to handle filter residue and does not solve the problem of residual extract recovery. Utility Model Content

[0003] The purpose of this invention is to provide a reflux extraction device with magnetic stirring function to solve the problems existing in the prior art.

[0004] This utility model is implemented by the following technical solution: a reflux extraction device with magnetic stirring function, which includes a magnetic stirrer, a reaction vessel body, a connecting cylinder, a sieve cylinder, a vessel cover and a condenser reflux pipe; The reactor body is placed inside the magnetic stirrer. The top opening of the reactor body is threaded to the bottom of the connecting cylinder. An annular limiting plate is horizontally fixed in the middle of the connecting cylinder. A sieve cylinder with its bottom inside the reactor body is installed on the annular limiting plate. The outer edge of the top opening of the sieve cylinder is engaged with the upper surface of the annular limiting plate. The top opening of the connecting cylinder is threaded to the kettle lid, and a reflux port is provided through the middle of the kettle lid. The reflux port is connected to the condensation reflux pipe placed above the kettle lid.

[0005] Preferably, when it is necessary to squeeze the filter residue, the condensate reflux pipe is removed, the kettle cover is taken off, and an extrusion plate is placed inside the screen cylinder to press the material. Several guide holes are evenly distributed on the surface of the extrusion plate, and an insertion hole is provided in the middle of the upper surface of the extrusion plate. An extrusion rod is inserted into the insertion hole.

[0006] Preferably, the top opening of the connecting cylinder is provided with an external thread, the bottom inner wall of the vessel lid is provided with an internal thread, a first sealing ring is provided between the top opening end face of the connecting cylinder and the inside of the vessel lid, and the top opening end face of the connecting cylinder presses the first sealing ring into the inside of the vessel lid.

[0007] Preferably, the top opening of the reactor body is provided with an external thread, the bottom opening of the connecting cylinder is provided with an internal thread, and a second sealing ring is provided between the lower surface of the annular limiting piece inside the connecting cylinder and the top opening end face of the reactor body, and the top opening end face of the reactor body presses the second sealing ring against the lower surface of the annular limiting piece.

[0008] Advantages of this invention: This invention uses a magnetic stirrer instead of a traditional stirrer for mixing, eliminating dead zones within the reactor body and ensuring uniform mixing of materials and solvents, resulting in high dissolution efficiency of active ingredients; furthermore, the absence of a sealing structure at the contact point between the stirring shaft and the reactor lid allows for timely replacement of the first and second sealing rings, preventing aging and failure; additionally, the sieve cylinder is detachably installed within the reactor body, and the extrusion rod and extrusion plate can squeeze the residual extract in the filter residue into the reactor body for recovery, simplifying operation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the connecting cylinder.

[0011] Figure 3 This is a sectional view of the connecting cylinder.

[0012] Figure 4 This is a schematic diagram showing the installation status of the connecting cylinder, screen cylinder, and first sealing ring.

[0013] Figure 5 This is a schematic diagram of the structure of the second sealing ring for the vessel lid.

[0014] Figure 6 This is a schematic diagram showing the state in which the extrusion rod pushes the extrusion plate to move inside the screen cylinder.

[0015] Figure 7 This is a schematic diagram of the extrusion plate.

[0016] In the diagram: 1. Magnetic stirrer; 2. Reactor body; 3. Connecting cylinder; 3.1. Annular limiting plate; 4. Sieve cylinder; 5. Reactor cover; 5.1. Reflux port; 6. Condensation reflux pipe; 7. Extrusion plate; 7.1. Guide hole; 7.2. Insertion hole; 8. Extrusion rod; 9. First sealing ring; 10. Second sealing ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-7 As shown, a reflux extraction device with magnetic stirring function includes a magnetic stirrer 1, a reaction vessel body 2, a connecting cylinder 3, a sieve cylinder 4, a vessel cover 5, and a condenser reflux pipe 6. The magnetic stirrer 1 is a DF-101S heat-collecting constant-temperature heating magnetic stirrer. The reaction vessel body 2 is placed inside the magnetic stirrer 1. The reaction vessel body 2 is used to hold the extraction solvent. The magnetic stirrer 1 drives the magnetic stirrer to rotate inside the reaction vessel body 2, causing the solvent to form a vortex, so that the extraction solvent and the material to be extracted can be fully contacted, accelerating the dissolution of active ingredients. The bottom side wall of the reaction vessel body 2 is provided with a drain port, which is closed by a knob cap. The top opening of the reaction vessel body 2 is provided with an external thread, and the bottom opening of the connecting cylinder 3 is provided with an internal thread. The top opening of the reaction vessel body 2 is connected to the bottom thread of the connecting cylinder 3. An annular limiting plate 3.1 is horizontally fixed in the middle of the connecting cylinder 3. A sieve cylinder 4 with its bottom placed inside the reaction vessel body 2 is installed on the annular limiting plate 3.1. The outer edge of the top opening of the sieve cylinder 4 is engaged with the upper surface of the annular limiting plate 3.1. The top opening of the connecting cylinder 3 is provided with an external thread, and the bottom inner wall of the kettle cover 5 is provided with an internal thread. The top opening of the connecting cylinder 3 is threadedly connected to the kettle cover 5. A reflux interface 5.1 is provided through the middle of the kettle cover 5, and a condensation reflux pipe 6 placed above the kettle cover 5 is connected at the reflux interface 5.1. After the lid 5 is removed, an extrusion plate 7 is placed inside the sieve cylinder 4 to press the material. Several guide holes 7.1 are evenly distributed on the surface of the extrusion plate 7. An insertion hole 7.2 is provided in the middle of the upper surface of the extrusion plate 7. An extrusion rod 8 is inserted into the insertion hole 7.2. The extrusion rod 8 and the extrusion plate 7 work together to extrude the filter residue and squeeze out the residual extract in the filter residue. A first sealing ring 9 is provided between the top opening end face of the connecting cylinder 3 and the inside of the vessel lid 5. The top opening end face of the connecting cylinder 3 presses the first sealing ring 9 into the inside of the vessel lid 5. A second sealing ring 10 is provided between the lower surface of the annular limiting piece 3.1 inside the connecting cylinder 3 and the top opening end face of the reactor body 2. The top opening end face of the reactor body 2 presses the second sealing ring 10 into the lower surface of the annular limiting piece 3.1. The first sealing ring 9 and the second sealing ring 10 are used to seal and prevent the extract from leaking out during magnetic stirring.

[0019] Installation and usage process: The reactor body 2 is placed inside the magnetic stirrer 1, and the connecting cylinder 3 is screwed into the top opening of the reactor body 2; the bottom of the sieve cylinder 4 passes through the annular limiting plate 3.1 and is placed inside the reactor body 2, and the outer edge of the top opening of the sieve cylinder 4 is engaged with the upper surface of the annular limiting plate 3.1. Place the material to be extracted (such as crushed Chinese medicinal materials) into the sieve cylinder 4, and add the extraction solvent (such as ethanol aqueous solution or drinking water) into the reaction vessel body 2 through the sieve cylinder 4 until the solvent liquid level covers the material to be extracted in the sieve cylinder 4. Screw the kettle cover 5 at the top opening of the connecting cylinder 3, and install the condensate reflux pipe 6 at the reflux port 5.1 of the kettle cover 5; Start the magnetic stirrer 1 and adjust the speed to 300-600 r / min. At the same time, heat the reaction vessel body 2 and adjust the control temperature to 60-80℃ according to the boiling point of the solvent. The solvent inside the reactor body 2 evaporates upon heating, and the vapor enters the condenser reflux pipe 6 through the reflux port 5.1. After the vapor is condensed into liquid, it flows back into the reactor body 2 through the condenser reflux pipe 6, forming a reflux cycle. After extraction, turn off the magnetic stirrer 1, stop magnetic stirring and heating, and wait for the device to cool to room temperature. Then, remove the condenser reflux tube 6, take the reactor body 2 out of the magnetic stirrer 1, open the reactor lid 5, place the extrusion plate 7 in the sieve cylinder 4, and insert the extrusion rod 8 into the insertion hole 7.2 of the extrusion plate 7. Unscrew the knob cap at the sealed drain port to drain the extract in the reactor body 2 into the collection tank. Then, manually push the squeeze rod 8 downward to make the squeeze plate 7 move down to squeeze the filter residue, squeeze out the extract remaining in the filter residue, and let it flow into the bottom of the reactor body 2, and then drain it into the collection tank through the drain port again. After extrusion, pull out the extrusion rod 8 upwards and remove the sieve cylinder 4 to clean the filter residue, thus completing the extraction process.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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.

Claims

1. A reflux extraction device with magnetic stirring function, characterized in that, It includes a magnetic stirrer, a reaction vessel body, a connecting cylinder, a sieve cylinder, a vessel lid, and a condenser reflux pipe; The reactor body is placed inside the magnetic stirrer. The top opening of the reactor body is threaded to the bottom of the connecting cylinder. An annular limiting plate is horizontally fixed in the middle of the connecting cylinder. A sieve cylinder with its bottom inside the reactor body is installed on the annular limiting plate. The outer edge of the top opening of the sieve cylinder is engaged with the upper surface of the annular limiting plate. The top opening of the connecting cylinder is threaded to the kettle lid, and a reflux port is provided through the middle of the kettle lid. The reflux port is connected to the condensation reflux pipe placed above the kettle lid.

2. The reflux extraction device with magnetic stirring function according to claim 1, characterized in that, When it is necessary to squeeze the filter residue, the condensate reflux pipe is removed, the kettle cover is taken off, and an extrusion plate is placed inside the screen cylinder to press the material. Several guide holes are evenly distributed on the surface of the extrusion plate, and an insertion hole is provided in the middle of the upper surface of the extrusion plate. An extrusion rod is inserted into the insertion hole.

3. The reflux extraction device with magnetic stirring function according to claim 1, characterized in that, An external thread is provided at the top opening of the connecting cylinder, and an internal thread is provided on the bottom inner wall of the vessel lid. A first sealing ring is provided between the top opening end face of the connecting cylinder and the inside of the vessel lid, and the top opening end face of the connecting cylinder presses the first sealing ring into the inside of the vessel lid.

4. The reflux extraction device with magnetic stirring function according to claim 1, characterized in that, The reactor body has an external thread at the top opening and an internal thread at the bottom opening of the connecting cylinder. A second sealing ring is provided between the lower surface of the annular limiting plate inside the connecting cylinder and the top opening end face of the reactor body. The top opening end face of the reactor body presses the second sealing ring against the lower surface of the annular limiting plate.

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