A sealed seat structure for a rapid solvent extractor
By introducing a filtration mechanism into the sealing structure of the rapid solvent extractor, the problem of particulate matter entering the pipeline inside the sealing seat was solved, thus ensuring the normal operation of the sealing seat and the protection of the valve.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN EVERGREEN PINE TECH CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-03
AI Technical Summary
The sealing seat of the existing rapid solvent extraction instrument is prone to causing particulate matter to enter the pipeline during use, damaging the valve core and making it impossible to maintain pressure.
Design a sealing seat structure, including an upper sealing seat, an extraction tube, a lower sealing seat, and a lifting mechanism. The extraction tube has openings at both ends and is equipped with a filtration mechanism inside the lower sealing seat to prevent particulate matter from entering the pipeline.
The filtration mechanism prevents solid particles from entering the pipeline connected to the lower sealing seat, avoiding damage to the valve and ensuring the normal operation of the sealing seat.
Smart Images

Figure CN224453665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rapid solvent extraction instrument technology, and more specifically, to a sealing seat structure for a rapid solvent extraction instrument. Background Technology
[0002] Some rapid solvent extraction instruments on the market require the extraction process to be completed in an extraction tank, and the extraction tank needs to be disassembled for cleaning after the extraction process is completed.
[0003] Some extraction cells have a tubular structure with openings at both ends. When using such extraction cells, a temporary sealing structure is needed to seal both ends before extraction can proceed. After temporarily sealing both ends of the extraction cell, the solution in the pipeline is injected into the extraction cell through the sealed structure at one end. After extraction, the solution in the extraction cell flows away through the other sealed structure. The sealing structure is then separated from both ends of the extraction cell after extraction to facilitate its removal.
[0004] For the aforementioned sealing method, a common approach is to use two sealing seats to seal both ends of the extraction tank. However, these sealing seats generally lack a filtration design. When the extraction tank is separated from the sealing seat, if particles such as quartz sand fall into the sealing seat during use, these particles will enter the pipeline connected to the corresponding sealing seat. If these particles accidentally enter the valve connected to the pipeline, they may damage the valve core, preventing pressure maintenance. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sealing seat structure for a rapid solvent extraction instrument.
[0006] The objective of this utility model is achieved through the following technical solution:
[0007] A sealing structure for a rapid solvent extraction apparatus is characterized by comprising an upper sealing seat, an extraction tube, a lower sealing seat, and a lifting mechanism, all disposed on the rapid solvent extraction apparatus. The extraction tube has openings at both its top and bottom ends. The lifting mechanism allows the upper and lower sealing seats to abut or separate from the top and bottom ends of the extraction tube, respectively. Solution can enter the extraction tube through the upper sealing seat, and the solution in the extraction tube can enter the lower sealing seat through the filtration mechanism. The lower sealing seat is equipped with a filtration mechanism to prevent particulate matter from entering the lower sealing seat.
[0008] Furthermore, in this utility model, the upper sealing seat and the extraction tube are both mounted on the lifting mechanism, and the lower sealing seat is fixedly mounted on the rapid solvent extractor. The upper sealing seat is located above the extraction tube, and the lower sealing seat is located below the extraction tube. The lifting mechanism can move the extraction tube toward the lower sealing seat, and at the same time, it can move the upper sealing seat toward the top of the extraction tube.
[0009] Furthermore, in this invention, the filtration mechanism includes a filter screen disposed within the lower sealing seat.
[0010] The beneficial effects of this utility model are:
[0011] This invention provides a sealing seat structure for a rapid solvent extraction instrument. By installing a filter mechanism inside the lower sealing seat, even if solid particles fall onto the lower sealing seat after the bottom end of the extraction tube is separated from the lower sealing seat, the presence of the filter screen will prevent the solid particles from falling into the pipeline connected to the lower sealing seat, thereby preventing solid particles from entering other flow paths. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the rapid solvent extraction apparatus according to an embodiment of the present invention;
[0013] Figure 2 for Figure 1 Sectional view of section AA;
[0014] Figure 3 for Figure 2 A magnified view of a section at point B in the middle;
[0015] Figure 4 for Figure 2 A magnified view of a section at point C.
[0016] In the diagram: 101 - Rapid solvent extraction instrument; 201 - Upper sealing seat; 301 - Extraction tube; 401 - Lower sealing seat; 501 - Lifting mechanism; 601 - Filtration mechanism. Detailed Implementation
[0017] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] Please see Figures 1-4 This utility model provides a technical solution:
[0019] A sealing structure for a rapid solvent extraction apparatus is characterized by comprising an upper sealing seat 201, an extraction tube 301, a lower sealing seat 401, and a lifting mechanism 501, all mounted on the rapid solvent extraction apparatus 101. The extraction tube 301 has openings at both its top and bottom. The lifting mechanism 501 allows the upper sealing seat 201 and the lower sealing seat 401 to abut or separate from the top and bottom ends of the extraction tube 301, respectively. The solution can enter the extraction tube 301 through the upper sealing seat 201, and the solution in the extraction tube 301 can enter the lower sealing seat 401 through a filtration mechanism 601. A filtration mechanism 601 is installed on the lower sealing seat 401 to prevent particulate matter from entering the lower sealing seat 401.
[0020] Preferably, in this embodiment, both the upper sealing seat 201 and the extraction tube 301 are mounted on the lifting mechanism 501, and the lower sealing seat 401 is fixedly mounted on the rapid solvent extractor 101. The upper sealing seat 201 is located above the extraction tube 301, and the lower sealing seat 401 is located below the extraction tube 301. The lifting mechanism 501 can move the extraction tube 301 to the lower sealing seat 401, and at the same time, it can move the upper sealing seat 201 to the top of the extraction tube 301.
[0021] To facilitate the smooth docking of the upper sealing seat 201, extraction tube 301, and lower sealing seat 401 for sealing, in this embodiment, the upper sealing seat 201, extraction tube 301, and lower sealing seat 401 are all cylindrical structures. After the three are installed, the central axis of the upper sealing seat 201, the central axis of the extraction tube 301, and the central axis of the lower sealing seat 401 are all collinear, which facilitates docking and sealing.
[0022] from Figure 2 From the perspective of [the device], to achieve the aforementioned seal, the lifting mechanism 501 first controls the extraction tube 301 to move downwards until the bottom end of the extraction tube 301 is inserted into the lower sealing seat 401, at which point the lower sealing seat 401 seals the bottom end of the extraction tube 301. Then, the extraction tube 301 stops moving, and the upper sealing seat 201 moves downwards until it is inserted into the top end of the extraction tube 301, at which point the upper sealing seat 201 seals the top end of the extraction tube 301. The solution is then injected into the extraction tube 301 through the upper sealing seat 201 for extraction. After extraction, the solution in the extraction tube 301 flows into the lower sealing seat 401 and then flows away through the pipeline. When the extraction tube 301 needs to be removed, both the extraction tube 301 and the upper sealing seat 201 are moved upwards, with the upper sealing seat 201 moving upwards a further distance to separate from the extraction tube 301, and then the extraction tube 301 can be removed.
[0023] The lifting mechanism 501 described above can be implemented using a common screw and nut mechanism to achieve the lifting function.
[0024] Reference Figure 4In this embodiment, the filtration mechanism 601 includes a filter screen installed inside the lower sealing seat 401. When the bottom end of the extraction tube 301 separates from the lower sealing seat 401, even if solid particles fall onto the lower sealing seat 401, the presence of the filter screen inside the lower sealing seat 401 prevents the solid particles from falling into the pipeline connected to the lower sealing seat 401. In other embodiments of this embodiment, the filtration mechanism 601 may also use a filter cartridge or the like to achieve the filtration function.
[0025] Working principle:
[0026] The lifting mechanism 501 first controls the extraction tube 301 to move downwards until the bottom end of the extraction tube 301 is inserted into the lower sealing seat 401 (i.e., part of the lower sealing seat 401 is located inside the bottom end of the extraction tube 301), at which point the lower sealing seat 401 completes the seal at the bottom end of the extraction tube 301. Then, the extraction tube 301 stops moving, and the upper sealing seat 201 moves downwards until it is inserted into the top end of the extraction tube 301, at which point the upper sealing seat 201 completes the seal at the top end of the extraction tube 301. Then, the solution is injected into the extraction tube 301 through the upper sealing seat 201, and the extraction process can begin. After extraction is completed, the solution in the extraction tube 301 flows into the lower sealing seat 401 and then flows away through the pipeline. When it is necessary to remove the extraction tube 301, both the extraction tube 301 and the upper sealing seat 201 are moved upwards, and the upper sealing seat 201 is moved upwards a certain distance to separate it from the extraction tube 301, and then the extraction tube 301 can be removed.
[0027] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. A seal seat structure for a rapid solvent extractor, characterized by: The apparatus includes an upper sealing seat (201), an extraction tube (301), a lower sealing seat (401), and a lifting mechanism (501), all mounted on a rapid solvent extraction apparatus (101). The extraction tube (301) has openings at both its top and bottom. The lifting mechanism (501) allows the upper sealing seat (201) and the lower sealing seat (401) to abut or separate from the top and bottom of the extraction tube (301), respectively. The solution can enter the extraction tube (301) through the upper sealing seat (201), and the solution in the extraction tube (301) can enter the lower sealing seat (401) through the filtration mechanism (601). The lower sealing seat (401) is equipped with a filtration mechanism (601) to prevent particulate matter from entering the lower sealing seat (401).
2. The seal seat structure for a rapid solvent extractor according to claim 1, characterized in that: The upper sealing seat (201) and the extraction tube (301) are both mounted on the lifting mechanism (501). The lower sealing seat (401) is fixedly mounted on the rapid solvent extractor (101). The upper sealing seat (201) is located above the extraction tube (301), and the lower sealing seat (401) is located below the extraction tube (301). The lifting mechanism (501) can move the extraction tube (301) toward the lower sealing seat (401) and can also move the upper sealing seat (201) toward the top of the extraction tube (301).
3. A seal seat structure for a rapid solvent extractor according to claim 2, wherein: The upper sealing seat (201), the extraction tube (301) and the lower sealing seat (401) are all cylindrical structures. The central axis of the upper sealing seat (201), the central axis of the extraction tube (301) and the central axis of the lower sealing seat (401) are all collinear.
4. A seal seat structure for a rapid solvent extractor according to any one of claims 1 to 3, characterized in that: The filtration mechanism (601) includes a filter screen disposed within the lower sealing seat (401).
5. A seal seat structure for a rapid solvent extractor according to any one of claims 1-3, characterized in that: The filtration mechanism (601) includes a filter element disposed within the lower sealing seat (401).