Self-adaptive adjustable gas purging device
By designing an adaptive adjustable gas purge device, using technical means such as split module, heating module and liquid level detection module, the problems of low extraction efficiency and low purity of existing solid-phase extraction devices are solved, and a more efficient and finer extraction process is achieved.
Patent Information
- Application Number
- CN202421019345.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing solid-phase extraction and purge devices have low overall extraction efficiency, wasted time, unable to effectively control the nitrogen flow rate, and are inconvenient to adjust, resulting in low extraction purity.
An adaptive adjustable gas purge device is designed, including a gas source, a shunt module, a heating module and a liquid level detection module. Through the one-in and multiple-output structure and flow adjustment unit of the diverting module, fine control of nitrogen flow is achieved; the gas needle adopts a telescopic tube structure combined with dynamic and static tubes, and the length of the gas needle is adaptively adjusted through the linear drive module; the liquid level detection module is used to detect the height of the liquid level in the nitrogen blowing tube and adjust the nitrogen flow in real time.
The overall extraction efficiency of the solid-phase extraction device is improved, the operating time is reduced, the ability to control nitrogen flow rate is enhanced, and the extraction purity is improved.
Smart Images
Figure CN222561579U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical analysis, in particular to a self-adaptive and adjustable gas purge device. Background Art
[0002] Solid-Phase Extraction (SPE) is a sample pretreatment technology developed in recent years. It is developed by combining liquid-solid extraction columns and liquid chromatography technology. It is mainly used for sample separation, purification and concentration. It is widely used in the fields of medicine, food, environment, commodity inspection, chemical industry, etc. The general steps of solid-phase extraction usually include: 1) activation, pre-washing the solid-phase extraction column with activation liquid, and discarding the filtrate; 2) loading, a certain amount of extraction sample solution is absorbed, passed through the column at a certain flow rate, the filtrate is discarded, and the target is adsorbed on the solid-phase extraction column; 3) elution, washing the above-mentioned solid-phase extraction column with organic phase, eluting the interfering organic impurities, and the target remains on the solid-phase extraction column, and the filtrate is discarded; 4) elution, eluting the solid-phase extraction column with mobile phase, eluting the target into the corresponding nitrogen blowpipe; 5) nitrogen blowing, using nitrogen to blow the liquid received in the nitrogen blowpipe to nearly dryness.
[0003] The solid phase extraction purge device in the prior art has low extraction efficiency, wastes a lot of time, cannot control the flow rate of nitrogen well, is not convenient for the staff to adjust the extraction device, and has low extraction purity. Therefore, it is urgent to design an adaptive and adjustable gas purge device to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide an adaptive and adjustable gas purge device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adaptive and adjustable gas purging device, comprising a gas source, a diverter module, a heating module and a liquid level detection module for measuring the liquid level position in a nitrogen blowpipe, the diverter module is located above the heating module, the diverter module adopts a one-inlet and multiple-outlet structure, the inlet of the diverter module is connected to the gas source, and each outlet of the diverter module is connected to a gas needle, the interior of the heating module is used to install a nitrogen blowpipe, the gas needle is arranged corresponding to each nitrogen blowpipe, a flow regulating unit is installed in each branch channel of the diverter module, the gas needle adopts a telescopic tube structure composed of a moving tube and a static tube, a linear drive module is provided on the diverter module, and one end of the linear drive module is fixedly connected to the moving tube.
[0006] By adopting the above technical solution: nitrogen enters the diversion module and performs nitrogen blowing through the gas needles connected to the diversion module; the heating module is used to heat and control the temperature of the nitrogen blowpipe; the liquid level detection module can detect the height of the liquid level in the nitrogen blowpipe; each branch pipeline can control the flow of nitrogen individually according to the detected liquid level and temperature through the flow regulating unit, thereby improving the overall extraction efficiency of the device; then the gas needle adopts a telescopic tube structure, and the length of the gas needle can be adaptively changed through the linear drive module to adapt to the liquid level of each nitrogen blowpipe and obtain a better extraction effect.
[0007] An air inlet is provided at the top of the diversion module, and an air outlet connected to the air inlet is provided at the bottom of the diversion module. One end of the static tube is fixedly connected to the air outlet, and the other end of the static tube is a sandwich structure and a slide groove is provided on the outer layer of the static tube. One end of the moving tube is inserted between the inner and outer layers of the static tube, and a slider connected to the slide groove is provided on the outer wall of the moving tube. One end of the linear drive module is fixedly connected to the slider.
[0008] By adopting the above technical solution: the air needle adopts a combination of a dynamic and static tube, the wall of the static tube adopts a sandwich structure, the dynamic tube is inserted in the sandwich, and the outer wall of the inner layer of the static tube is in sliding sealing contact with the inner wall of the dynamic tube, which well ensures the sealing and avoids leakage and waste of nitrogen during the purging process. A slide groove is provided on the outer layer of the static tube, and a slider connected to the slide groove is provided on the outer side of the dynamic tube, so that one end of the linear drive module drives the slider to move, which can drive the entire dynamic tube to move, thereby realizing the process of extending and retracting the air needle.
[0009] The flow regulating unit includes a controller and a valve body. A valve groove for installing the valve body is provided at the end of each branch channel on the diversion module. The outer wall of the valve body is in sliding sealing contact with the inner wall of the valve groove. The controller is installed at the top of the diversion module. The valve body is cap-shaped. A through hole corresponding to the branch channel is provided on one side of the valve body. A connecting groove connected to the bottom output end of the controller is provided on the top of the valve body. The controller is a servo rotary motor.
[0010] By adopting the above technical solution: the valve body is installed in each valve slot of the diversion module, and the valve body is individually controlled by a corresponding controller, that is, the controller rotates the valve body to change the size of the through hole, thereby adjusting the flow rate.
[0011] A thread groove is arranged at the notch of the valve groove, a thread head connected to the thread groove is arranged at the top end of the static tube, and a needle is fixedly connected to the bottom end of the dynamic tube.
[0012] By adopting the above technical solution: the top end of the gas needle is connected to the diversion module through a thread, and a needle is arranged at the bottom end of the gas needle to improve the purging effect.
[0013] The linear drive module includes a shell and an electric screw. A lifting screw is installed in the shell. One end of the shell adopts a servo rotating motor connected to the lifting screw. A nut block is threadedly connected to the lifting screw. The nut block is slidably connected to the inner wall of the shell, and one end of the nut block is fixedly connected to the slider.
[0014] By adopting the above technical solution: an electric screw is installed in the shell, a nut block connected to the slider is provided in the shell, and the electric screw drives the nut block to move up and down, thereby driving the moving tube connected to the slider to move up and down.
[0015] The heating module adopts one of water bath, sand bath or infrared.
[0016] The flow splitting module is connected to the gas source via a pipeline, and a pressure reducing valve and a pressure gauge are installed on the pipeline.
[0017] By adopting the above technical solution: the total pressure of the gas entering the diversion module is controlled by the pressure reducing valve, and the pressure gauge displays the pressure value in real time.
[0018] The liquid level detection module is installed on one side of the gas needle, and the liquid level detection module is an ultrasonic liquid level meter.
[0019] Technical effects and advantages of the utility model:
[0020] 1. In this scheme, nitrogen enters the diversion module and is blown through the gas needles connected to the diversion module. The heating module is used to heat and control the temperature of the nitrogen blowpipe. The liquid level detection module can detect the height of the liquid level in the nitrogen blowpipe. The flow regulating unit set in each branch pipeline can independently control the flow of nitrogen according to the detected liquid level and temperature, thereby improving the overall extraction efficiency of the device.
[0021] 2. In this solution, the gas needle adopts a telescopic tube structure, and the length of the gas needle can be adaptively changed through a linear drive module to adapt to the liquid level height of each nitrogen blowpipe and obtain a better extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of the structure of the adaptive and adjustable gas purge device provided in this application;
[0023] Figure 2 A schematic diagram of the structure of a flow diversion module of an adaptively adjustable gas purge device provided in an embodiment;
[0024] Figure 3 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;
[0025] Figure 4 for Figure 2 A schematic cross-sectional structure diagram of;
[0026] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at B in the middle;
[0027] Figure 6 A schematic diagram of the structure of the valve body of the adaptive and adjustable gas purge device provided in this application;
[0028] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure.
[0029] Figure numerals: 1. gas source; 2. pipeline; 3. pressure gauge; 4. diversion module; 41. air inlet; 42. branch pipeline; 43. air outlet; 5. liquid level detection module; 6. gas needle; 7. heating module; 8. nitrogen blowpipe; 81. static pipe; 811. slide groove; 82. moving pipe; 821. slider; 9. controller; 10. linear drive module; 101. housing; 102. lifting screw; 103. nut block; 11. valve body; 1101. threaded groove; 1102. through hole; 12. needle. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] This embodiment provides Figure 1 An adaptive and adjustable gas purging device is shown, comprising a gas source 1, a diverter module 4, a heating module 7 and a liquid level detection module 5 for measuring the liquid level position in a nitrogen blowpipe 8. The diverter module 4 is connected to the gas source 1 via a pipeline 2, and a pressure reducing valve and a pressure gauge 3 are installed on the pipeline 2. The total pressure of the gas entering the diverter module 4 is controlled by the pressure reducing valve, and the pressure gauge 3 displays the pressure value in real time. In this embodiment, in order to realize automatic control, the pressure reducing valve, pressure gauge 3, diverter module 4, heating module 7 and liquid level detection module 5 are all connected to a PLC board to realize automatic operation.
[0032] Furthermore, if Figure 2As shown, the diverter module 4 adopts a circular structure, and the diverter module 4 is installed above the heating module 7 through a bracket. The diverter module 4 adopts a one-inlet and multiple-outlet structure. The inlet of the diverter module 4 is connected to the gas source 1, and each outlet of the diverter module 4 is connected to a gas needle 6. The interior of the heating module 7 is used to install a nitrogen blowpipe 8, and the gas needle 6 is arranged corresponding to each nitrogen blowpipe 8. A flow regulating unit is installed in each branch channel of the diverter module 4. The gas needle 6 of this embodiment adopts a telescopic tube structure composed of a moving tube 82 and a static tube 81. A linear drive module 10 is also provided on the diverter module 4. The moving end of the linear drive module 10 is fixedly connected to the moving tube 82. When the linear drive module 10 drives the moving end to make a linear motion, it will drive the moving tube 82 to move up and down.
[0033] Specifically, Figure 3 , 4 As shown in Figure 5, an air inlet 41 is provided at the top of the diverter module 4, and an air outlet 43 connected to the air inlet 41 is provided at the bottom of the diverter module 4. One end of the static tube 81 is fixedly connected to the air outlet 43. In the present embodiment, one end of the static tube 81 adopts a sandwich structure, that is, one end of the static tube 81 has an inner layer and an outer layer arranged concentrically, one end of the moving tube 82 is inserted between the inner and outer layers of the static tube 81, and the inner wall of the moving tube 82 is in sliding sealing contact with the outer wall of the inner layer of the static tube 81, that is, the inner wall of the moving tube 82 and the outer wall of the inner layer of the static tube 81 are transitionally matched and the matching surfaces are coated with grease. In addition, a slide groove 811 is provided on the outer layer of the static tube 81, and further, a slider 821 connected to the slide groove 811 is provided on the outer layer of the moving tube 82. The slider 821 can be driven to move along the slide groove 811 by the above-mentioned linear drive module 10, that is, the moving tube 82 performs linear motion under the drive of the linear drive module 10, and has good stability. The gas needle 6 of this embodiment adopts a telescopic tube structure, and the length of the gas needle 6 can be adaptively changed through the linear drive module 10 to adapt to the liquid level height of each nitrogen blowpipe 8 to obtain a better extraction effect.
[0034] During the nitrogen blowing process, nitrogen enters the diversion module 4 from the air inlet 41, and is blown through the branch pipes 42 to the gas needles 6 connected to the diversion module 4. A temperature control module is provided in the heating module 7. The temperature control module measures the temperature of the heating module 7 and feeds back to the PLC, thereby realizing temperature control of the nitrogen blow pipe 8. Then, the liquid level detection module 5 can detect the height of the liquid level in the nitrogen blow pipe 8. Each branch pipe 42 can control the flow rate of nitrogen individually according to the detected liquid level and temperature through the flow regulating unit, thereby improving the overall extraction efficiency of the device.
[0035] From the above, it can be known that the air needle 6 of this embodiment adopts a combination of a moving and static tube 81. The wall of the static tube 81 adopts a sandwich structure, and the moving tube 82 is inserted in the sandwich. The inner layer of the static tube 81 and the outer layer of the moving tube 82 are in sliding sealing contact, which well ensures the sealing and avoids leakage and waste of nitrogen during the purging process. A slide groove 811 is provided on the outer layer of the static tube 81, and a slider 821 connected to the slide groove 811 is provided on the outer side of the moving tube 82. Therefore, when one end of the linear drive module 10 drives the slider 821 to move, it can drive the entire moving tube 82 to move, thereby realizing the process of adaptive adjustment of the air needle 6.
[0036] Furthermore, the flow regulating unit includes a controller 9 and a valve body 11. A valve groove for installing the valve body 11 is provided at the end of each branch channel on the diversion module 4. Below the valve groove is the air outlet 43 of the diversion module 4. The outer layer of the valve body 11 is in sliding sealing contact with the inner layer of the valve groove. The controller 9 is installed at the top of the diversion module 4. The valve body 11 is cap-shaped. A through hole 1102 corresponding to the branch channel is opened on one side of the valve body 11. A connecting groove connected to the bottom output end of the controller 9 is opened at the top of the valve body 11. The controller 9 is a servo rotating motor. The valve body 11 is installed in each valve groove of the diversion module 4. The valve body 11 is individually controlled by the corresponding controller 9, that is, the controller 9 rotates the valve body 11 to change the size of the through hole 1102, so as to adjust the flow rate.
[0037] To facilitate installation, Figure 6 and 7 As shown, a threaded groove 1101 is provided at the notch of the valve groove, i.e., the outlet 43 of the diverter module 4, a threaded head connected to the connection groove is provided at the top of the static tube 81, a needle 12 is fixedly connected to the bottom of the moving tube 82, the top of the air needle 6 is connected to the diverter module 4 by a thread, and a needle 12 is provided at the bottom of the air needle 6 to improve the purging effect. The liquid level detection module 5 is installed on one side of the air needle 6, and the liquid level detection module 5 is an ultrasonic liquid level meter.
[0038] Furthermore, the linear drive module 10 includes a shell 101 and an electric screw. A lifting screw 102 is installed in the shell 101. One end of the shell 101 adopts a servo rotating motor connected to the lifting screw 102. A nut block 103 is threadedly connected to the lifting screw 102. The nut block 103 is slidingly connected to the inner layer of the shell 101. One end of the nut block 103 is fixedly connected to the slider 821. An electric screw is installed in the shell 101. The shell 101 is provided with a nut block 103 connected to the slider 821. The electric screw drives the nut block 103 to move up and down, thereby driving the moving tube 82 connected to the slider 821 to move up and down.
[0039] The heating module 7 of the present embodiment can adopt one of water bath, sand bath or infrared heating. Water bath heating, sand bath heating and infrared heating are all existing technologies and will not be described in detail here.
[0040] In another implementation manner, the linear drive module 10 of this embodiment may adopt an electric telescopic rod, one end of which is connected to the slider 821 , which can also realize the up and down movement of the moving tube 82 .
[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An adaptive and adjustable gas purge device, comprising a gas source (1), a flow splitter module (4), a heating module (7) and a liquid level detection module (5) for measuring the liquid level position in a nitrogen blowpipe (8), characterized in that: The diverter module (4) is located above the heating module (7). The diverter module (4) adopts a one-inlet-multiple-outlet structure. The inlet of the diverter module (4) is connected to the gas source (1). Each outlet of the diverter module (4) is connected to a gas needle (6). The interior of the heating module (7) is used to install a nitrogen blowpipe (8). The gas needle (6) is arranged corresponding to each nitrogen blowpipe (8). A flow regulating unit is installed in each branch channel of the diverter module (4). The gas needle (6) adopts a telescopic tube structure composed of a moving tube (82) and a static tube (81). The diverter module (4) is provided with a linear drive module (10). One end of the linear drive module (10) is fixedly connected to the moving tube (82). The liquid level detection module (5) is installed on one side of the gas needle (6).
2. The adaptive and adjustable gas purge device according to claim 1, characterized in that: The top of the diversion module (4) is provided with an air inlet (41), the bottom of the diversion module (4) is provided with an air outlet (43) connected to the air inlet (41), one end of the static tube (81) is fixedly connected to the air outlet (43), the other end of the static tube (81) is a sandwich structure and a slide groove (811) is provided on the outer layer of the static tube (81), one end of the moving tube (82) is inserted between the inner and outer layers of the static tube (81), a slider (821) connected to the slide groove (811) is provided on the outer wall of the moving tube (82), and one end of the linear drive module (10) is fixedly connected to the slider (821).
3. The adaptive and adjustable gas purge device according to claim 2, characterized in that: The flow regulating unit comprises a controller (9) and a valve body (11). A valve groove for installing the valve body (11) is provided at the end of each branch channel on the diversion module (4). The outer wall of the valve body (11) is in sliding sealing contact with the inner wall of the valve groove. The controller (9) is installed at the top of the diversion module (4). The valve body (11) is in a cap shape. A through hole (1102) corresponding to the branch channel is provided on one side of the valve body (11). A connecting groove connected to the bottom output end of the controller (9) is provided at the top of the valve body (11). The controller (9) is a servo rotary motor.
4. The adaptive and adjustable gas purge device according to claim 3, characterized in that: A thread groove (1101) is provided at the notch of the valve groove, a thread head connected to the thread groove (1101) is provided at the top end of the static tube (81), and a needle (12) is fixedly connected to the bottom end of the moving tube (82).
5. An adaptive and adjustable gas purge device according to any one of claims 1 to 4, characterized in that: The linear drive module (10) comprises a housing (101) and an electric screw, wherein a lifting screw (102) is installed in the housing (101), one end of the housing (101) adopts a servo rotary motor connected to the lifting screw (102), a nut block (103) is threadedly connected to the lifting screw (102), the nut block (103) is slidably connected to the inner wall of the housing (101), and one end of the nut block (103) is fixedly connected to a slider (821).
6. The adaptive and adjustable gas purge device according to claim 1, characterized in that: The heating module (7) adopts one of a water bath, a sand bath or infrared.
7. The adaptive and adjustable gas purge device according to claim 1, characterized in that: The flow distribution module (4) is connected to the gas source (1) via a pipeline (2), and a pressure reducing valve and a pressure gauge (3) are installed on the pipeline (2).
8. The adaptive and adjustable gas purge device according to claim 1, characterized in that: The liquid level detection module (5) is installed on one side of the static pipe (81), and the liquid level detection module (5) is an ultrasonic liquid level meter.