A support device for extraction

Abstract

An extraction support device includes: a housing; an extraction column embedded in the top of the housing; a collection tank located at the bottom of the housing and below the extraction column; a vacuum chamber located on one side of the housing, with the internal pressure the same as the internal pressure of the housing; a liquid extraction pipe connected to the lowest point of the collection tank cavity, with the other end extending through the housing to the outside and communicating with the top cavity of the vacuum chamber; a liquid extraction pump installed on the liquid extraction pipe; and a return gas pipe connected to the top of the collection tank cavity, with the other end extending through the housing to the outside and communicating with the top cavity of the vacuum chamber. This device, through the cooperation of the vacuum chamber and the return gas pipe, utilizes a pressure balancing mechanism to avoid the problem of waste liquid seeping back into the collection tank from the backflow port under vacuum negative pressure, as is common in traditional devices. This reduces the formation of a water wall on the inner wall of the collection tank and lowers the difficulty of cleaning.

Description

Technical Field

[0001] This utility model relates to a support device, specifically an extraction support device. Background Technology

[0002] In solid-phase extraction (SPE), waste liquid collection and treatment are critical factors affecting extraction efficiency and equipment maintenance. Currently, SPE processes are typically conducted under vacuum to accelerate extraction and separation efficiency. However, this process presents significant challenges in controlling waste liquid flow: due to the negative pressure, waste liquid can easily seep back into the waste liquid collection tank from the waste liquid backflow port, causing a difficult-to-clean water wall to form on the inner wall of the collection tank. This not only increases the cleaning and maintenance costs of the equipment but may also contaminate subsequent extraction operations due to residual waste liquid, affecting the accuracy of experimental results.

[0003] To address the issue of waste liquid flowing into the main body of the device, existing solid-phase extraction support devices often employ a separate waste liquid tank inside the main unit. This tank centrally collects the waste liquid generated during extraction, preventing direct contamination of the main unit. However, this design still has significant limitations: firstly, the waste liquid tank, being located inside the main unit, is cumbersome to install and remove, hindering rapid cleaning and replacement; secondly, under vacuum negative pressure, maintaining a stable pressure balance between the waste liquid tank and the main unit's interior is difficult, potentially leading to backflow of waste liquid. This can cause water to form on the inner wall of the collection tank, and the waste liquid tank occupies internal space, limiting the flexibility of other component layouts. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an extraction support device, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes:

[0006] Box;

[0007] The extraction column is embedded and installed at the top of the housing;

[0008] The collection tank is located at the bottom inside the chamber and below the extraction column;

[0009] The vacuum chamber is located on one side of the chamber, and its internal pressure is the same as the pressure inside the chamber.

[0010] The liquid extraction tube is connected to the lowest point of the inner cavity of the collection tank, and the other end extends through the box body to the outside and connects to the top cavity of the vacuum box.

[0011] A liquid pump, installed on the liquid extraction pipe;

[0012] The return pipe connects to the top of the inner cavity of the collection tank, and the other end extends through the box to the outside and connects to the top cavity of the vacuum box.

[0013] The waste liquid generated during the operation of the extraction column enters the collection tank and is then transported to the vacuum chamber by a pump. The pressure inside the vacuum chamber increases, and the negative pressure gas flows back to the chamber through the return pipe to maintain pressure balance, thereby collecting the waste liquid inside the vacuum chamber.

[0014] Preferably, the bottom plate of the collection tank is an inclined surface that slopes toward the inlet end of the liquid extraction pipe.

[0015] Preferably, the portion of the return gas pipe extending from the outside of the housing to the vacuum chamber has a U-shaped tube structure, with its highest point higher than the top of the vacuum chamber.

[0016] Preferably, the vacuum chamber is provided with a drain valve at the bottom.

[0017] Preferably, a liquid level sensor is provided at the top of the inner cavity of the collection tank. The liquid level sensor is electrically connected to the pump and is used to automatically start the pump when the liquid level in the collection tank reaches a set height.

[0018] Preferably, the side wall of the enclosure is provided with an observation window.

[0019] Beneficial effects: By combining the vacuum chamber and the return gas pipe, the device uses a pressure balance mechanism to avoid the problem of waste liquid seeping back into the collection tank from the backflow port under vacuum negative pressure, which is common in traditional devices. This reduces the formation of water walls on the inner wall of the collection tank and lowers the difficulty of cleaning. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0022] Figure 2 This is a two-dimensional structural schematic diagram of the present invention from a second perspective;

[0023] Figure 3 This is a cross-sectional view of the present invention;

[0024] The diagram is labeled as follows: 1. Box body; 2. Extraction column; 3. Collection tank; 4. Vacuum chamber; 5. Liquid extraction pipe; 6. Liquid extraction pump; 7. Gas return pipe. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 The specific embodiments of this utility model will be described in further detail.

[0026] Implementation examples, by Figure 1-3 This utility model provides an extraction support device, comprising:

[0027] Box 1;

[0028] Extraction column 2 is embedded and installed at the top of housing 1;

[0029] Collection pool 3 is located at the bottom inside the box 1 and below the extraction column 2;

[0030] Vacuum chamber 4 is located on one side of chamber 1, and its internal pressure is the same as that of chamber 1.

[0031] The liquid extraction tube 5 is connected to the lowest point of the inner cavity of the collection tank 3, and the other end extends through the box body 1 to the outside and connects with the top cavity of the vacuum box 4.

[0032] A liquid pump 6 is installed on the liquid extraction pipe 5;

[0033] The return pipe 7 is connected to the top of the inner cavity of the collection pool 3, and the other end extends through the box 1 to the outside and connects with the top cavity of the vacuum box 4.

[0034] The waste liquid generated during the operation of the extraction column 2 enters the collection tank 3 and is then transported to the vacuum box 4 by the liquid pump 6. The pressure inside the vacuum box 4 increases, and the negative pressure gas flows back to the box body 1 through the return pipe 7 to maintain pressure balance, thereby collecting the waste liquid in the vacuum box 4.

[0035] Box 1: Serves as the main frame of the device, providing installation and working space for various internal components. It has observation windows on its side walls to facilitate users to observe the internal working conditions.

[0036] Extraction column 2: Embedded and installed at the top of the box 1, it is the core component for extraction operation. The waste liquid generated during operation will enter the collection tank 3.

[0037] Collection tank 3: Located at the bottom inside the housing 1 and below the extraction column 2, it is used to temporarily store the waste liquid generated by the extraction column 2. Its bottom plate is an inclined surface that slopes towards the inlet end of the extraction pipe 5, which facilitates the collection of waste liquid towards the inlet end of the extraction pipe 5; a liquid level sensor is provided at the top of the inner cavity, which is electrically connected to the extraction pump 6.

[0038] Vacuum box 4: Located on one side of box 1, its internal pressure is the same as that of box 1, and it is used for the final collection of waste liquid. It is equipped with a drain valve at the bottom, which can be used to drain the waste liquid collected in the box.

[0039] Liquid extraction pipe 5: connected to the lowest point of the inner cavity of the collection tank 3, and the other end extends through the box body 1 to the outside and connects with the top cavity of the vacuum box 4, used to transport the waste liquid in the collection tank 3 to the vacuum box 4.

[0040] Liquid pump 6: Installed on the liquid pumping pipe 5, it provides power for the transportation of waste liquid. When the liquid level in the collection tank 3 reaches the set height, it will automatically start under the control of the liquid level sensor.

[0041] Return pipe 7: Connects to the top of the inner cavity of the collection tank 3, and the other end extends through the box 1 to the outside and connects to the top cavity of the vacuum box 4. The part extending from the outside of the box 1 to the vacuum box 4 has a U-shaped tube structure, and its highest point is higher than the top of the vacuum box 4.

[0042] Liquid level sensor: Located at the top of the inner cavity of the collection tank 3, electrically connected to the liquid pump 6, used to monitor the liquid level in the collection tank 3.

[0043] Working principle: After the device is started, the extraction column 2, as the core component of the extraction operation, begins to work. The waste liquid generated by it falls naturally under the action of gravity and enters the collection tank 3 located directly below. The bottom plate of the collection tank 3 is designed as an inclined surface that slopes towards the inlet end of the extraction pipe 5, which can guide the waste liquid to quickly converge towards the inlet of the extraction pipe 5, realizing the temporary storage of the waste liquid (this is existing technology).

[0044] Under the power of the pump 6, the waste liquid in the collection tank 3 is transported to the vacuum box 4 through the pump pipe 5 (connecting to the lowest point of the inner cavity of the collection tank 3).

[0045] Since the initial pressure of vacuum chamber 4 is the same as that of chamber 1, the internal pressure of vacuum chamber 4 gradually increases as waste liquid continuously enters. At this time, the return gas pipe 7 begins to function: one end of the return gas pipe 7 is connected to the top of the inner cavity of collection tank 3, and the other end is connected to the top cavity of vacuum chamber 4. The part of the return gas pipe 7 located outside chamber 1 has a U-shaped pipe structure (the highest point is higher than the top of vacuum chamber 4, which can prevent waste liquid from flowing back). The negative pressure gas generated by the increased pressure inside vacuum chamber 4 will flow back to chamber 1 through the return gas pipe 7, thereby timely balancing the pressure between chamber 1 and vacuum chamber 4 and ensuring the stability of the internal pressure of the device.

[0046] Finally, under pressure equilibrium, the waste liquid is continuously collected in the vacuum chamber 4, completing the entire waste liquid collection process. The user can observe the internal working status in real time through the observation window on the side wall of the chamber 1. When the waste liquid in the vacuum chamber 4 reaches a certain amount, it can be discharged through the drain valve at the bottom for the device to be recycled.

[0047] Beneficial effects: Effectively prevents waste liquid backflow and pollution: The device, through the cooperation of vacuum box 4 and return gas pipe 7, uses a pressure balance mechanism to avoid the problem of waste liquid seeping back from the backflow port to the collection tank 3 under vacuum negative pressure in traditional devices, reducing the formation of water walls on the inner wall of the collection tank 3 and reducing the difficulty of cleaning.

[0048] To avoid contamination inside the chamber: The collection pool 3, as a dedicated temporary storage component, with its inclined bottom plate design, can collect the waste liquid generated by the extraction column 2 and quickly transport it to the vacuum chamber 4 through the liquid extraction pipe 5. This replaces the traditional method of placing a waste liquid tank inside the chamber 1, reducing the risk of waste liquid flowing into the chamber 1 from the source and keeping the inside of the chamber 1 clean.

[0049] Maintaining a stable working pressure environment: The initial pressure of vacuum chamber 4 is consistent with that of chamber 1, and the return gas pipe 7 can balance the pressure of the two in a timely manner during the waste liquid transportation process, ensuring that the extraction column 2 works under stable pressure conditions, thereby improving the accuracy and stability of the extraction operation.

[0050] Improved ease of cleaning and maintenance: The collection tank 3 has an independent structure and its inner wall is not prone to forming a stubborn water wall due to backflow of waste liquid. At the same time, the vacuum box 4 can directly discharge waste liquid through the drain valve, reducing the cleaning dead corners inside the box 1 and the collection tank 3, which facilitates daily maintenance.

[0051] Optimize waste liquid collection efficiency: The inclined bottom plate of the collection tank 3 guides the waste liquid to quickly converge to the inlet of the suction pipe 5. The liquid level sensor is linked with the suction pump 6 to realize automatic liquid discharge. Combined with the centralized collection function of the vacuum box 4, an efficient waste liquid treatment process is formed, reducing manual intervention.

[0052] Ensuring operational visibility and safety: The observation window in the enclosure allows for real-time monitoring of the internal working status. The sealing and pressure balancing design of each component reduces the risk of waste liquid leakage and improves the safety and controllability of the operation process.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An extraction support device, characterized in that, include: Box (1); Extraction column (2) is embedded and installed at the top of box (1); The collection pool (3) is located at the bottom inside the box (1) and below the extraction column (2); A vacuum chamber (4) is located on one side of the chamber (1), and its internal pressure is the same as that inside the chamber (1). The liquid extraction tube (5) is connected to the lowest point of the inner cavity of the collection tank (3), and the other end extends through the box body (1) to the outside and connects to the top cavity of the vacuum box (4); A liquid pump (6) is installed on the liquid extraction pipe (5); The return pipe (7) is connected to the top of the inner cavity of the collection tank (3), and the other end extends through the box body (1) to the outside and connects to the top cavity of the vacuum box (4); The waste liquid generated by the extraction column (2) enters the collection tank (3) and is transported to the vacuum box (4) by the liquid pump (6). The pressure inside the vacuum box (4) increases, and the negative pressure gas flows back to the box body (1) through the return pipe (7) to maintain pressure balance, thereby collecting the waste liquid in the vacuum box (4).

2. The extraction support device according to claim 1, characterized in that: The bottom plate of the collection tank (3) is an inclined surface that slopes toward the inlet end of the extraction pipe (5).

3. The extraction support device according to claim 2, characterized in that: The portion of the return gas pipe (7) extending from the outside of the housing (1) to the vacuum chamber (4) has a U-shaped structure, with its highest point higher than the top of the vacuum chamber (4).

4. The extraction support device according to claim 3, characterized in that: The vacuum chamber (4) is equipped with a drain valve at the bottom.

5. The extraction support device according to claim 4, characterized in that: The top of the inner cavity of the collection tank (3) is equipped with a liquid level sensor, which is electrically connected to the pump (6) and is used to automatically start the pump (6) when the liquid level in the collection tank (3) reaches a set height.

6. The extraction support device according to claim 5, characterized in that: The side wall of the box (1) is provided with an observation window.

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