A liquid chromatograph having an exhaust filtration system

Abstract

The utility model belongs to liquid chromatograph technical field especially relates to a liquid chromatograph with exhaust filter system, including base, the base is fixedly installed with liquid chromatograph body, the liquid chromatograph body right -hand member is fixedly installed with exhaust fan, the exhaust fan right -hand member is fixedly connected with first ventilation pipe, the first ventilation pipe is fixedly connected with gas storage tank away from one end of exhaust fan, the gas storage tank left end is fixedly connected with liquid chromatograph body, the base is fixedly connected with four rectangular distribution's support column, four the support column's upper is equipped with filter equipment, filter equipment includes fixedly connected with four support column upper end's filter box, the gas storage tank right -hand member is fixedly connected with second ventilation pipe. The utility model can replace filter core fast, and can effectively prevent solvent steam leakage in the replacement process, can effectively prevent solvent steam from condensation because of long conveying pipeline, leads to pipeline blockage.

Description

Technical Field

[0001] This utility model relates to the field of liquid chromatography technology, and in particular to a liquid chromatograph with an exhaust filtration system. Background Technology

[0002] Liquid chromatography (LC) is a highly efficient separation and analysis instrument widely used in fields such as chemistry, biology, medicine, environment, and food. It achieves separation by utilizing the differences in the partition coefficients of various components in a sample between the stationary and mobile phases, and then performs qualitative and quantitative analysis using a detector.

[0003] The existing liquid chromatographs with exhaust filtration systems have a complicated and time-consuming filter replacement process. In addition, solvent vapor leakage may occur during the filter replacement process. Furthermore, due to the excessive length of the delivery pipeline, solvent vapor may condense during the delivery process, leading to pipeline blockage.

[0004] Therefore, we propose a liquid chromatograph with an exhaust filtration system to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a liquid chromatograph with an exhaust filtration system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A liquid chromatograph with an exhaust filtration system includes a base, on which the liquid chromatograph body is fixedly mounted. An exhaust fan is fixedly mounted on the right end of the liquid chromatograph body, and a first ventilation pipe is fixedly connected to the right end of the exhaust fan. A gas storage box is fixedly connected to the end of the first ventilation pipe away from the exhaust fan. The left end of the gas storage box is fixedly connected to the liquid chromatograph body. Four rectangularly distributed support columns are fixedly connected to the base, and a filtration device is provided on the four support columns. The filtration device includes a filter box fixedly connected to the upper ends of the four support columns. A second ventilation pipe is fixedly connected to the right end of the air storage box. The end of the second ventilation pipe away from the air storage box is fixedly connected to the filter box. A groove is provided at the front end of the filter box. Two rectangular plates symmetrically connected to the left and right are slidably connected in the groove. A fixing plate is fixedly connected to the front end of the two rectangular plates. Two front-to-back symmetrical limiting plates are fixedly connected to the upper end of the two rectangular plates. The filter box has an installation cavity, and a transmission device is provided in the installation cavity.

[0007] Preferably, the transmission device includes a first slide groove formed at the lower left end of the groove, a rack fixedly connected to the left end of the rectangular plate on the left side, the rack being slidably connected in the first slide groove, the rack being meshed with a gear, a rotating rod fixedly connected to the upper end of the gear, a first bevel gear fixedly connected to the end of the rotating rod away from the gear, the first bevel gear being meshed with a second bevel gear, a threaded rod fixedly connected to the rear end of the second bevel gear, the threaded rod being threadedly connected to the inner wall of the mounting cavity at the end away from the second bevel gear, and limit blocks fixedly connected to both the front and rear ends of the rectangular plate on the left side.

[0008] Preferably, a second sliding groove is provided in the groove, the second sliding groove is connected to the mounting cavity, a sliding rod is slidably connected in the second sliding groove, the threaded rod is threaded through the sliding rod, and a baffle is fixedly connected to the end of the sliding rod away from the threaded rod.

[0009] Preferably, a sealing strip is fixedly connected to the rear side of the fixing plate, and an anti-slip handle is fixedly connected to the front side of the fixing plate.

[0010] Preferably, the first ventilation pipe, the second ventilation pipe, and the air storage box are all fixedly connected with thermal insulation material.

[0011] Preferably, an air outlet duct is provided at the lower end of the filter box, and an exhaust fan is fixedly installed inside the air outlet duct.

[0012] Compared with existing technologies, the advantages of this device are: 1. By pulling the anti-slip handle, the operator moves the fixed plate and rectangular plate. At the same time, the rack drives the gear to rotate, which moves the slide rod and baffle through the transmission device. When the filter element needs to be replaced and the fixed plate and rectangular plate are pulled out, the baffle moves to the lower end of the second ventilation pipe to prevent solvent vapor from leaking during replacement. When the fixed plate and rectangular plate are pushed into the filter box, the baffle moves forward, and the filtration work can be carried out.

[0013] 2. Insulation material is fixedly connected inside the first ventilation pipe, the second ventilation pipe, and the gas storage box, which can effectively prevent solvent vapor from condensing due to excessively long pipelines, thus preventing pipeline blockage.

[0014] In summary, this device allows for quick filter replacement and effectively prevents solvent vapor leakage during the replacement process. It also effectively prevents solvent vapor from condensing and clogging the pipeline due to excessively long delivery pipes. Attached Figure Description

[0015] Figure 1 A perspective view of a liquid chromatograph with an exhaust filtration system proposed in this utility model; Figure 2 This is a perspective view of the filter box in a liquid chromatograph with an exhaust filtration system proposed in this utility model. Figure 3 This is a cross-sectional view of the filter box in a liquid chromatograph with an exhaust filtration system proposed in this utility model. Figure 4 This is a perspective view of the fixed plate and rectangular plate in a liquid chromatograph with an exhaust filtration system proposed in this utility model; Figure 5 This utility model presents a perspective view of the filter chamber in a liquid chromatograph with an exhaust filtration system from another angle.

[0016] In the diagram: 1. Base, 2. Liquid chromatograph body, 3. Exhaust fan, 4. First ventilation pipe, 5. Support column, 6. Filter box, 7. Second ventilation pipe, 8. Rectangular plate, 9. Fixing plate, 10. Limiting plate, 11. Rack, 12. Gear, 13. Rotating rod, 14. First bevel gear, 15. Second bevel gear, 16. Threaded rod, 17. Sliding rod, 18. Baffle, 19. Gas storage box, 20. Limiting block, 21. Exhaust fan. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figures 1-5 A liquid chromatograph with an exhaust filtration system includes a base 1, on which a liquid chromatograph body 2 is fixedly mounted. An exhaust fan 3 is fixedly mounted on the right end of the liquid chromatograph body 2, and a first ventilation pipe 4 is fixedly connected to the right end of the exhaust fan 3. A gas storage tank 19 is fixedly connected to the end of the first ventilation pipe 4 furthest from the exhaust fan 3. The left end of the gas storage tank 19 is fixedly connected to the liquid chromatograph body 2. Four rectangularly distributed support columns 5 are fixedly connected to the base 1, and a filtration device is provided on each of the four support columns 5. The liquid chromatograph body 2 and the exhaust fan 3 are prior art and will not be described in detail here.

[0019] The filtration device includes a filter box 6 fixedly connected to the upper ends of four support columns 5. A second ventilation pipe 7 is fixedly connected to the right end of the gas storage box 19. The end of the second ventilation pipe 7 away from the gas storage box 19 is fixedly connected to the filter box 6. A groove is opened at the front end of the filter box 6. Two rectangular plates 8 symmetrically connected to the left and right sides are slidably connected in the groove. A fixing plate 9 is fixedly connected to the front end of the two rectangular plates 8. Two front-to-back symmetrical limiting plates 10 are fixedly connected to the upper end of each of the two rectangular plates 8 to fix the filter element and prevent the filter element from slipping. The filter box 6 has an installation cavity, and a transmission device is installed in the installation cavity. A sealing strip is fixedly connected to the rear side of the fixing plate 9 to prevent solvent vapor from leaking during operation. An anti-slip handle is fixedly connected to the front side of the fixing plate 9.

[0020] The transmission device includes a first slide groove at the lower left end of the groove. A rack 11 is fixedly connected to the left end of the rectangular plate 8 on the left side. The rack 11 is slidably connected in the first slide groove. The rack 11 is meshed with a gear 12. A rotating rod 13 is fixedly connected to the upper end of the gear 12. A first bevel gear 14 is fixedly connected to the end of the rotating rod 13 away from the gear 12. The first bevel gear 14 is meshed with a second bevel gear 15. A threaded rod 16 is fixedly connected to the rear end of the second bevel gear 15. The end of the threaded rod 16 away from the second bevel gear 15 is threadedly connected to the inner wall of the mounting cavity. Limiting blocks 20 are fixedly connected to both the front and rear ends of the rectangular plate 8 on the left side.

[0021] A second sliding groove is provided in the groove, and the second sliding groove is connected to the mounting cavity. A sliding rod 17 is slidably connected in the second sliding groove. A threaded rod 16 is threaded through the sliding rod 17. A baffle 18 is fixedly connected to the end of the sliding rod 17 away from the threaded rod 16. The upper end of the baffle 18 is tightly fitted to the inner wall of the groove.

[0022] Insulation material is fixedly connected to the first ventilation pipe 4, the second ventilation pipe 7, and the air storage box 19. An air outlet duct is opened at the lower end of the filter box 6, and an exhaust fan 21 is fixedly installed inside the air outlet duct. The exhaust fan 21 drives the air to flow, which helps the exhaust air to pass through the filter element quickly, thereby improving the filtration efficiency.

[0023] When using this utility model, the operator first pulls the anti-slip handle to move the fixing plate 9 and the rectangular plate 8 outside the filter box 6, and places the filter element in the designated position. At this time, the rack 11 drives the gear 12 and the rotating rod 13 to rotate, which in turn causes the first bevel gear 14 to rotate and drives the second bevel gear 15 and the threaded rod 16 to rotate. Then, the slide rod 17 and the baffle 18 move backward to below the second ventilation pipe 7 to block the solvent vapor inlet and prevent solvent vapor leakage. After the filter element is placed or replaced, the operator pushes the anti-slip handle to reset the fixing plate 9 and the rectangular plate 8. At this time, the rack 11 drives the transmission device to rotate in the opposite direction, so that the slide rod 17 and the baffle 18 no longer block the solvent vapor inlet. Then, the operator operates the exhaust fan 21 to perform the filtration work.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A liquid chromatograph with an exhaust filtration system, comprising a base (1), characterized in that, A liquid chromatograph body (2) is fixedly installed on the base (1). A fan (3) is fixedly installed on the right end of the liquid chromatograph body (2). A first ventilation pipe (4) is fixedly connected to the right end of the fan (3). A gas storage box (19) is fixedly connected to the end of the first ventilation pipe (4) away from the fan (3). The left end of the gas storage box (19) is fixedly connected to the liquid chromatograph body (2). Four rectangular support columns (5) are fixedly connected on the base (1). A filter device is provided on the four support columns (5). The filtration device includes a filter box (6) fixedly connected to the upper end of the four support columns (5). A second ventilation pipe (7) is fixedly connected to the right end of the air storage box (19). The end of the second ventilation pipe (7) away from the air storage box (19) is fixedly connected to the filter box (6). A groove is provided at the front end of the filter box (6). Two rectangular plates (8) symmetrically connected to the groove are slidably connected. A fixing plate (9) is fixedly connected to the front end of the two rectangular plates (8). Two front-to-back symmetrical limiting plates (10) are fixedly connected to the upper end of the two rectangular plates (8). The filter box (6) has an installation cavity. A transmission device is provided in the installation cavity.

2. A liquid chromatograph with an exhaust filtration system according to claim 1, characterized in that, The transmission device includes a first slide groove at the lower left end of the groove. A rack (11) is fixedly connected to the left end of the rectangular plate (8) on the left side. The rack (11) is slidably connected in the first slide groove. A gear (12) is meshed with the rack (11). A rotating rod (13) is fixedly connected to the upper end of the gear (12). A first bevel gear (14) is fixedly connected to the end of the rotating rod (13) away from the gear (12). A second bevel gear (15) is meshed with the first bevel gear (14). A threaded rod (16) is fixedly connected to the rear end of the second bevel gear (15). The end of the threaded rod (16) away from the second bevel gear (15) is threadedly connected to the inner wall of the mounting cavity. Limiting blocks (20) are fixedly connected to both the front and rear ends of the rectangular plate (8) on the left side.

3. A liquid chromatograph with an exhaust filtration system according to claim 1, characterized in that, A second sliding groove is provided in the groove, the second sliding groove is connected to the mounting cavity, a sliding rod (17) is slidably connected in the second sliding groove, the threaded rod (16) is threaded through the sliding rod (17), and a baffle (18) is fixedly connected to the end of the sliding rod (17) away from the threaded rod (16).

4. A liquid chromatograph with an exhaust filtration system according to claim 1, characterized in that, A sealing strip is fixedly connected to the rear side of the fixing plate (9), and an anti-slip handle is fixedly connected to the front side of the fixing plate (9).

5. A liquid chromatograph with an exhaust filtration system according to claim 1, characterized in that, Insulation material is fixedly connected inside the first ventilation pipe (4), the second ventilation pipe (7), and the air storage box (19).

6. A liquid chromatograph with an exhaust filtration system according to claim 1, characterized in that, An air outlet duct is provided at the lower end of the filter box (6), and an exhaust fan (21) is fixedly installed inside the air outlet duct.

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