Liquid phase fraction collecting valve with liquid leakage detection and overpressure alarm device

Abstract

The utility model discloses a liquid-phase fraction collecting valve with a liquid leakage detection and overpressure alarm device, which is integrally of a box structure and specifically comprises a case, a partition plate is arranged in the case and divides the case into a dry area and a wet area, and the partition plate and the case are sealed; the liquid leakage sensor is mounted in a liquid accumulation disc in a wet area on the front side of the case body; the liquid substrate is provided with a liquid inlet, a plurality of collection ports, a waste liquid port and an expansion port; wherein the liquid inlet is located at the foremost end, the collection opening is formed behind the liquid inlet, the collection opening is normally opened behind the collection opening, the waste liquid opening is closed only in a suction mode in a collection task, and the waste liquid opening is normally opened in other working stages; the plurality of electromagnetic valves are respectively connected with the plurality of collection ports and the waste liquid port, and the opening and closing of the collection ports and the waste liquid port are controlled through power-on opening and closing; and the pressure sensor is mounted on the liquid substrate and is positioned behind the liquid inlet and in front of the collecting opening. The liquid leakage alarm device has the functions of liquid leakage detection and overpressure alarm, and the safety and the reliability of laboratory equipment can be remarkably improved.

Description

Technical Field

[0001] This invention relates to a liquid fraction collection valve with a leakage detection and overpressure alarm device, which is applied to a preparative liquid system and belongs to the field of liquid chromatography. Background Technology

[0002] Traditional collection valves have significant limitations and shortcomings in the collection of liquid fractions. Firstly, they often cannot monitor changes in flow path pressure in real time. Under high pressure, abnormal increases in flow path pressure can cause serious damage to the equipment and even lead to experimental failure. However, traditional collection valves lack effective pressure monitoring mechanisms and cannot issue timely alarms, preventing researchers from taking appropriate measures to protect the equipment and ensure the smooth progress of the experiment.

[0003] Secondly, traditional collection valves lack leak detection functionality. During experiments, leaks may occur inside the enclosure, potentially interfering with experimental results or even causing safety incidents. However, because traditional collection valves lack leak detection mechanisms, researchers often cannot detect leaks in a timely manner and take appropriate measures to address them, increasing the risks and uncertainties of the experimental process.

[0004] Therefore, in order to solve these problems, the market urgently needs a liquid fraction collection valve that can monitor the flow path pressure in real time and has leakage detection and alarm functions. Utility Model Content

[0005] The purpose of this invention is to provide a liquid fraction collection valve with a leakage detection and overpressure alarm device, which can send an alarm to the host computer and the user when the collection valve is in an abnormal state during operation. Whether the leakage is caused by an abnormality in the flow path or by user misoperation, the pump can be stopped in time and an audible and visual alarm can be issued, which significantly increases the reliability and safety of the experiment.

[0006] A liquid fraction collection valve with leakage detection and overpressure alarm devices, the valve being an integral box structure, specifically comprising:

[0007] The leak sensor is installed in the liquid collection tray in the wet area on the front of the chassis. Before the leaking liquid is diverted by the pipeline, it must pass through the location of the leak sensor. The presence of a leak in the wet area is determined by the temperature change when the thermistor comes into contact with the liquid.

[0008] The liquid circuit board is equipped with an inlet, multiple collection ports, a waste port, and an expansion port. The inlet is located at the very front, followed by the collection ports, and then the normally open waste port, which closes only during collection operations and remains open during other operating phases. Finally, there is an expansion port for installing a secondary valve; when connected, the expansion port connects to the secondary valve's inlet. The secondary valve is identical to the main valve except that it lacks pressure alarms, leak detection, and does not require independent power. The secondary valve provides an additional collection port; both the collection and waste ports are controlled by solenoid valves, which come in normally open and normally closed types. The collection port is normally closed and opens when energized; the waste port is normally open and closes when energized.

[0009] Multiple solenoid valves are connected to the multiple collection ports and waste liquid ports, and the opening and closing of the collection ports and waste liquid ports are controlled by energizing them.

[0010] The pressure sensor is mounted on the liquid circuit board, located after the liquid inlet and before the collection port. It can directly measure the pressure inside the liquid circuit, thereby determining whether there is overpressure.

[0011] Status indicator lights use color and flashing to indicate to the user whether the user is in an abnormal state and what kind of abnormal state it is.

[0012] The chassis contains partitions that divide it into dry and wet zones. These partitions are sealed to the chassis to prevent liquid from flowing into the dry zone. Hardware is located in the dry zone, while the wet zone can accommodate any leaks.

[0013] This utility model discloses a liquid fraction collection valve with a leakage detection and overpressure alarm device. Its advantages and functions are as follows: This utility model has leakage detection and overpressure alarm functions. When the pressure in the flow path is abnormal or when leakage occurs in the chassis, it can send information to the host computer, stop the pump in time, and alarm the user with sound and light. This enables the experimental personnel to take corresponding measures to protect the equipment and ensure the smooth progress of the experiment, which can significantly improve the safety and reliability of laboratory equipment. Attached Figure Description

[0014] The accompanying drawings are included in this specification to provide a further understanding of the invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the specification, serve to explain the principles of the invention. In the drawings:

[0015] Figure 1 This is a top view of the overall structure of this utility model (with the top cover removed).

[0016] Figure 2 This is an isometric view of the liquid circuit substrate of this utility model.

[0017] Figure 3 This is an isometric view of the overall structure of this utility model (with the top cover removed).

[0018] Figure 4 This is an isometric view of Embodiment 2 of this utility model with an auxiliary valve added.

[0019] The numbers in the diagram are as follows:

[0020] 1. Leakage sensor 2. Liquid circuit board

[0021] 2.1 Liquid inlet 2.2 Collection outlet

[0022] 2.3 Waste liquid outlet 2.4 Liquid circuit board expansion port

[0023] 3 Solenoid valves 4 Pressure sensors

[0024] 5 Status Indicator Lights 6 Chassis

[0025] 7 main valves 8 auxiliary valves Detailed Implementation

[0026] The structure of this utility model will be further described below with reference to the accompanying drawings.

[0027] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The terms "first," "second," "third," etc. (if present) in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the objects described in this way can be used interchangeably where appropriate. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. Directional terms used in this application, such as: up, down, left, right, front, back, inside, outside, side, etc., are only for reference to the accompanying drawings.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] Example 1:

[0030] A liquid fraction collection valve with leakage detection and overpressure alarm, such as Figure 1 , Figure 2 and Figure 3As shown, it specifically includes;

[0031] Leakage sensor 1 is installed in the liquid collection tray in the wet area on the front side of the chassis 6. Before the leaking liquid is led away by the pipeline, it must pass through the location of the leakage sensor. The presence of leakage in the wet area is determined by the temperature change when the thermistor comes into contact with the liquid.

[0032] The liquid circuit board 2 is provided with a liquid inlet 2.1, multiple collection ports 2.2, a waste liquid port 2.3, and an expansion port 2.4. The liquid inlet 2.1 is located at the very front, followed by the collection ports 2.2, and then the waste liquid port 2.3. Finally, the expansion port 2.4 is located. Both the collection ports 2.2 and the waste liquid ports 2.3 are controlled by solenoid valves 3. The waste liquid ports are normally open and only close during a collection task (when a collection task command is received); the collection ports are normally closed and only need to open when a collection task command is received.

[0033] Multiple solenoid valves 3 are connected to the multiple collection ports and waste liquid ports, and the opening and closing of the collection ports and waste liquid ports are controlled by energizing them. The solenoid valves are divided into normally open and normally closed types. The collection ports are normally closed and open when energized; the waste liquid ports are normally open and close when energized.

[0034] Pressure sensor 4 is installed on the liquid circuit board, located after the liquid inlet and before the collection port. It can directly measure the pressure in the liquid circuit to determine whether there is overpressure.

[0035] Status indicator 5 uses color and flashing to indicate to the user whether the user is in an abnormal state and what kind of abnormal state it is.

[0036] Chassis 6 contains partitions that divide the chassis into dry and wet zones. The partitions are sealed to the chassis to prevent liquid from flowing into the dry zone. Hardware is located in the dry zone, while the wet zone can accommodate any leaks.

[0037] The specific installation and operation process is as follows:

[0038] Install the pressure sensor 4 in the threaded hole provided on the liquid circuit board 2; fasten the solenoid valve 3 to the liquid circuit board 2 with screws, align the inlet and outlet, and flatten the sealing ring (not shown in the figure); install the entire liquid circuit board 2 into the chassis 6 using adapter brackets and screws; install the leakage sensor 1 in the liquid collection tray in the wet area on the front of the chassis with screws; finally, fix the status indicator light 5 in the reserved hole in the chassis, and use the lighting method to indicate to the user whether there is an abnormal state and what kind of abnormal state it is (solid light indicates leakage, flashing indicates overpressure), thus completing the assembly process of the entire structural part.

[0039] The entire collection valve is connected to the end of the liquid phase system. The inlet is connected to the detector, multiple collection ports are connected to various collection containers, and the waste liquid port flows into the waste liquid bottle. When no collection task instruction is received, the waste liquid port is open, and the mobile phase flows through the collection valve into the waste liquid. When a collection task instruction is received, the collection valve will close the waste liquid port and open the corresponding collection port to let the detected components enter the collection container.

[0040] Example 2:

[0041] Based on Example 1, an auxiliary valve (such as...) is added through the expansion port. Figure 4 (As shown). The collection valve in Example 1 is considered as the main valve 7. The auxiliary valve 8 has no pressure alarm or leakage detection, and does not require independent power supply. The normally open waste port is replaced with a normally closed collection port, sharing a waste port with the main valve. Otherwise, its structure is identical to the main valve. When connected to the auxiliary valve, the extension port of the main valve 7 connects to the inlet port of the auxiliary valve 8. The auxiliary valve can provide six additional collection ports, controlled by solenoid valves connected to them respectively.

[0042] The combined main valve and auxiliary valve are connected to the end of the liquid phase system. The inlet of the main valve is connected to the detector, multiple collection ports are connected to various collection containers, and the waste port of the main valve flows into the waste bottle. When no collection task instruction is received, the waste port of the main valve is open, and the mobile phase flows through the main valve and auxiliary valve and then flows into the waste liquid. When a collection task instruction is received, the waste port is closed and the corresponding collection port is opened to allow the detected components to enter the collection container.

Claims

1. A liquid fraction collection valve with leakage detection and overpressure alarm device, the valve being an integral box structure, characterized in that: The collection valve specifically includes: The chassis contains partitions that divide the chassis into dry and wet areas, and the partitions are sealed to the chassis. The leakage sensor is installed in the liquid collection tray in the wet area on the front of the chassis. The liquid circuit board is provided with a liquid inlet, multiple collection ports, a waste liquid port, and an expansion port; the liquid inlet is located at the front end, followed by the collection ports, and the waste liquid port is located after the collection ports; the waste liquid port is normally open and only closes during collection tasks; the collection ports are normally closed and only open during collection tasks. Multiple solenoid valves are connected to the multiple collection ports and waste liquid ports respectively, and the opening and closing of the collection ports and waste liquid ports are controlled by energizing them. The pressure sensor is mounted on the liquid circuit board, located after the liquid inlet and before the collection port.

2. The collecting valve according to claim 1, characterized in that: The liquid circuit board is further provided with an expansion port, through which a secondary valve is installed. When the secondary valve is connected, the expansion port is connected to the liquid inlet of the secondary valve.

3. The collecting valve according to claim 1 or 2, characterized in that: The collection valve further includes status indicator lights with different colors and flashing states.

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