A high-performance liquid chromatograph waste liquid overflow collection device

Abstract

The utility model belongs to liquid chromatograph technical field, concretely relates to a kind of high performance liquid chromatograph waste liquid overflow collection device, including collection jar, three baffle plates of third baffle plate, second baffle plate and first baffle plate are arranged in collection jar, three baffle plates of third baffle plate, second baffle plate and first baffle plate divide into four cavities of first liquid level bin, overflow bin, separation bin and second liquid level bin in collection jar, first liquid level bin is between second baffle plate and third baffle plate, overflow bin is located in the side of third baffle plate away from first liquid level bin, separation bin is between first baffle plate and second baffle plate, second liquid level bin is located in the side of first baffle plate away from separation bin, overflow hole is arranged in third baffle plate and close to top end position.The utility model can let user accurate observation real liquid level, make up monitoring blank after sensor failure, quickly prompt liquid level state by eye-catching structure, avoid staff negligence, and it is convenient for timely replacement collection jar.

Description

Technical Field

[0001] This utility model belongs to the field of liquid chromatography technology, specifically relating to a waste liquid overflow collection device for high performance liquid chromatography. Background Technology

[0002] High-performance liquid chromatography (HPLC) is an important separation and analysis device in the fields of chemistry, medicine, and industry. During its operation, it continuously generates waste liquid containing organic solvents. Such waste liquid has corrosive and volatile properties. If it is not collected properly and overflows, it will cause pollution of the experimental environment, damage to instruments and equipment, and even safety risks. Therefore, waste liquid overflow prevention and collection devices have become a key component of HPLC equipment. In the existing technology, there are a variety of technical approaches to prevent spillage of liquid chromatograph waste liquid collection. For example, some solutions use non-contact capacitive sensors, liquid level detectors and other electronic detection elements on the outside of the waste liquid bottle, combined with audible and visual alarms or wireless terminal warning functions, to achieve real-time monitoring of the waste liquid level. When the liquid level exceeds a preset threshold, the staff is alerted to handle the situation. Other solutions use a viewing window or a transparent collection frame in the collection container to facilitate observation of the waste liquid volume and properties, and to help determine when to replace it. These technologies effectively reduce the risk of spillage under normal operating conditions. Among them, electronic detection solutions achieve automated monitoring, while visualization solutions provide a direct observation method. However, in practical applications, liquid chromatograph waste liquid often generates a large amount of foam due to its complex composition and reaction residues. Such foam can seriously interfere with the detection accuracy of existing liquid level sensors. Non-contact capacitive sensors are easily affected by the dielectric constant of foam, resulting in misjudgment. Photoelectric sensors may be blocked by foam, causing signal distortion, making it impossible for the sensor to accurately identify the true liquid level height and thus losing the warning function. Although some existing devices have a viewing window structure, this design is mainly used for routine liquid level observation or waste liquid property judgment and has not been optimized for foam interference scenarios. When foam covers the liquid surface, users still find it difficult to accurately distinguish the true liquid level through the existing viewing structure, which cannot effectively make up for the monitoring gap after sensor failure. Therefore, developing an improved device that can achieve accurate visual observation when the bubbling interference sensor detects, and that can quickly indicate the liquid level status through a conspicuous structure and facilitate timely replacement of the collection tank has important practical application value. Utility Model Content

[0003] The purpose of this invention is to provide a waste liquid overflow collection device for high-performance liquid chromatographs, which allows users to accurately observe the real liquid level, fills the monitoring gap after sensor failure, quickly indicates the liquid level status through a conspicuous structure, avoids staff negligence, and facilitates timely replacement of the collection tank, effectively reducing the risk of waste liquid overflow.

[0004] The specific technical solution adopted by this utility model is as follows: A high-performance liquid chromatograph waste liquid overflow prevention and collection device includes a collection tank, characterized in that: the collection tank is provided with three partitions, namely a third partition, a second partition, and a first partition, which divide the collection tank into four cavities: a first liquid level chamber, an overflow chamber, a separation chamber, and a second liquid level chamber. The first liquid level chamber is located between the second partition and the third partition, the overflow chamber is located on the side of the third partition away from the first liquid level chamber, the separation chamber is located between the first partition and the second partition, and the second liquid level chamber is located on the side of the first partition away from the separation chamber. An overflow hole is provided inside the third partition and near the top. An installation groove is provided inside the second partition. A float is installed inside the separation chamber. Multiple installation magnetic pieces are installed on the outside of the float. Multiple rotating rods are rotatably connected from top to bottom inside the second liquid level chamber. An installation frame is fixed on the outside of the rotating rods. A conspicuous piece and a magnet are fixed on both sides inside the installation frame, and the magnet and the installation magnetic piece attract each other.

[0005] The mounting slot is equipped with a filter screen.

[0006] A first counterweight is fixed inside the float and near its bottom.

[0007] The mounting frame is transparent.

[0008] A second counterweight is fixed to the bottom of the mounting frame.

[0009] A transparent glass panel is provided on the outside of the collection tank at a position corresponding to the mounting frame.

[0010] The first liquid level chamber is equipped with a liquid level sensor.

[0011] The technical effects achieved by this utility model are as follows: This invention addresses the issue of foam interference from waste liquid affecting sensor detection. By moving the float upwards, the magnetic plate is moved upwards, causing the mounting frame to flip and the conspicuous plate to face outwards, making it easier for users to observe and accurately monitor the true liquid level. This fills the monitoring gap after sensor failure and provides a quick indication of the liquid level through a conspicuous structure, preventing staff negligence. It also facilitates timely replacement of the collection tank, effectively reducing the risk of waste liquid overflow. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the top of the collection tank in this utility model; Figure 3 This is a sectional view of the side of the collection tank in this utility model; Figure 4 This is a schematic diagram of the structure between the float, the mounting frame, and the overflow hole in this utility model; Figure 5 This is a schematic diagram of the structure between the float and the mounting magnet in this utility model; Figure 6 This is a schematic diagram of the structure between the float and the first counterweight in this utility model; Figure 7 This is a schematic diagram of the structure between the second liquid level chamber and the mounting frame in this utility model; Figure 8 This is a schematic diagram of the structure between the mounting frame, the second counterweight, and the rotating rod in this utility model; Figure 9 This is a cross-sectional view of the mounting frame in this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 1. Collection tank; 2. Inlet pipe; 3. First liquid level chamber; 4. Separation chamber; 5. Overflow chamber; 6. Overflow hole; 7. Filter screen; 8. Second liquid level chamber; 9. First partition; 10. Float; 11. Mounting magnet; 12. First counterweight; 13. Rotating rod; 14. Mounting frame; 15. Highlighting piece; 16. Magnet; 17. Second counterweight; 18. Second partition; 19. Mounting groove; 20. Third partition. Detailed Implementation

[0014] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0015] like Figures 1-9As shown, a high-performance liquid chromatograph waste liquid overflow collection device includes a collection tank 1. The collection tank 1 is provided with three partitions: a third partition 20, a second partition 18, and a first partition 9. The three partitions divide the collection tank 1 into four cavities: a first liquid level chamber 3, an overflow chamber 5, a separation chamber 4, and a second liquid level chamber 8. The first liquid level chamber 3 is located between the second partition 18 and the third partition 20. The overflow chamber 5 is located on the side of the third partition 20 away from the first liquid level chamber 3. The separation chamber 4 is located between the first partition 9 and the second partition 18. The second liquid level chamber 8 is located on the side of the first partition 9 away from the separation chamber 4. An inlet pipe 2 is installed in the collection tank 1 and extends into the first liquid level chamber 3. The inlet pipe 2 is used to receive waste liquid, thereby allowing the waste liquid to be introduced into the first liquid level chamber 3 through the inlet pipe 2. See attached document Figure 3 An overflow hole 6 is provided inside the third partition 20 near the top. An installation groove 19 is provided inside the second partition 18. A float 10 is installed inside the separation chamber 4. Multiple mounting magnetic plates 11 are installed on the outside of the float 10. To prevent corrosion, the mounting magnetic plates 11 can also be placed inside the float 10 near the outer wall. Multiple rotating rods 13 are rotatably connected from top to bottom inside the second liquid level chamber 8. An installation frame 14 is fixed to the outside of the rotating rods 13. A transparent glass is provided on the outside of the collection tank 1 at the position corresponding to the installation frame 14. The transparent glass allows the user to see clearly. The mounting frame 14 can be easily viewed. Inside the mounting frame 14, two conspicuous pieces 15 and magnets 16 are fixed on both sides respectively. The magnets 16 and the mounting magnetic pieces 11 attract each other. The magnets 16 can be made of magnetic sheets or magnetic liquid, etc. The first partition 9 is relatively thin, which makes the attraction between the mounting magnetic pieces 11 and the magnets 16 better. When the collection tank 1 receives waste liquid, the inlet pipe 2 introduces the waste liquid into the first liquid level chamber 3. As the waste liquid gradually rises, the waste liquid can come into contact with the overflow hole 6, so that the waste liquid flows into the overflow chamber 5 through the overflow hole 6, thereby preventing the waste liquid from overflowing. See appendix Figure 9A second counterweight 17 is fixed to the bottom of the mounting frame 14. This second counterweight 17 ensures that, when the magnet 16 is not magnetically attracted, it remains below the mounting frame 14 due to gravity. The magnet 16 is positioned near the transparent glass. The mounting frame 14 is transparent, allowing the user to easily observe its interior, ensuring only the magnet 16 is visible. When waste liquid enters the first liquid level chamber 3, it is guided to the separation tank via the mounting groove 19. Inside compartment 4, the buoyancy of float 10 causes it to rise, which in turn moves the mounting magnetic plate 11 upward. As the mounting magnetic plate 11 moves upward, it generates an attractive force on the magnet 16, causing the magnet 16 to rotate the mounting frame 14 to the side closer to the waste liquid. This causes the second counterweight 17 to rotate above the mounting frame 14. At this time, the conspicuous plate 15 is positioned close to the transparent glass, allowing the user to observe the height of the waste liquid and thus avoid spillage.

[0016] The mounting slot 19 is equipped with a filter screen 7. The filter screen 7 allows impurities such as foam in the waste liquid to enter the separation chamber 4, thereby preventing these impurities from affecting the normal rise and fall of the float 10.

[0017] A first counterweight 12 is fixed inside the float 10 and near its bottom end, see appendix. Figure 6 By setting the first counterweight 12, the float 10 is always in a state of increasing value, avoiding situations such as horizontal or oblique setting of the magnetic plate 11, thereby avoiding poor adsorption effect on the magnet 16.

[0018] The first liquid level tank 3 is equipped with a liquid level sensor. By setting the liquid level sensor, the liquid level in the collection tank 1 can be automatically sensed by electrical signals. When the liquid level sensor’s detection effect is limited due to the presence of foam in the waste liquid, the user can check the liquid level by observing the conspicuous piece 15, which makes it easy to replace the collection tank 1. The conspicuous piece 15 can be a luminous sign, warning light strip, or other structures. If the waste liquid generates a large amount of foam, the liquid level sensor will distort the detection. At this time, the waste liquid in the first liquid level chamber 3 will flow into the separation chamber 4 through the mounting groove 19 on the second partition 18. The filter screen 7 will block the foam from entering the separation chamber 4, ensuring that the float 10 is only affected by the buoyancy of the real waste liquid. The liquid level of the waste liquid in the separation chamber 4 will rise, causing the float 10 to float up. The mounting magnetic plate 11 on the outside of the float 10 will float up synchronously with the float 10. The thin first partition 9 will generate an attraction force on the magnet 16 in the second liquid level chamber 8. The magnet 16 is fixed inside the mounting frame 14. The attraction force will cause the mounting frame 14 to rotate around the rotating rod 13. When the liquid level rises to different heights, the rotating rod 13 at the corresponding position will cause the mounting frame 14 to rotate in reverse. The user can see the eye-catching plate 15 through the transparent glass on the outside of the collection tank 1 and accurately judge the real liquid level. If it is not handled in time, the waste liquid in the first liquid level chamber 3 will exceed the overflow hole 6 at the top of the third partition 20 and automatically flow into the overflow chamber 5 to avoid directly overflowing the collection tank 1.

[0019] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A high-performance liquid chromatograph waste liquid overflow prevention and collection device, comprising a collection tank (1), characterized in that: The collection tank (1) is provided with three partitions: a third partition (20), a second partition (18), and a first partition (9). The three partitions divide the collection tank (1) into four cavities: a first liquid level chamber (3), an overflow chamber (5), a separation chamber (4), and a second liquid level chamber (8). The first liquid level chamber (3) is located between the second partition (18) and the third partition (20). The overflow chamber (5) is located on the side of the third partition (20) away from the first liquid level chamber (3). The separation chamber (4) is located between the first partition (9) and the second partition (18). The second liquid level chamber (8) is located on the side of the first partition (9) away from the separation chamber (4). An overflow hole (6) is provided in the third partition (20) near the top. An installation groove (19) is provided in the second partition (18). A float (10) is installed in the separation chamber (4). Multiple installation magnets (11) are installed on the outside of the float (10). Multiple rotating rods (13) are rotatably connected from top to bottom in the second liquid level chamber (8). An installation frame (14) is fixed on the outside of the rotating rod (13). A conspicuous piece (15) and a magnet (16) are fixed on both sides inside the installation frame (14). The magnet (16) and the installation magnet (11) attract each other.

2. The high-performance liquid chromatograph waste liquid overflow prevention and collection device according to claim 1, characterized in that: The mounting slot (19) is equipped with a filter screen (7).

3. The high-performance liquid chromatograph waste liquid overflow prevention and collection device according to claim 1, characterized in that: A first counterweight (12) is fixed inside the float (10) and near the bottom.

4. The high-performance liquid chromatograph waste liquid overflow prevention and collection device according to claim 1, characterized in that: The mounting frame (14) is transparent.

5. The high-performance liquid chromatograph waste liquid overflow prevention and collection device according to claim 1, characterized in that: The bottom of the mounting frame (14) is fixed with a second counterweight (17).

6. The high-performance liquid chromatograph waste liquid overflow prevention and collection device according to claim 1, characterized in that: A transparent glass is provided on the outside of the collection tank (1) and at the position corresponding to the mounting frame (14).

7. The high-performance liquid chromatograph waste liquid overflow prevention and collection device according to claim 1, characterized in that: The first liquid level tank (3) is equipped with a liquid level sensor.

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