Liquid chromatograph sample inlet residual liquid cleaning structure

Abstract

The utility model discloses a liquid chromatograph sample inlet residual liquid cleaning structure relates to analytical instrument auxiliary technical field, including bottom plate, filter box and box, and the filter box inside is connected with filter plate, and the filter box is connected with two slide rails on, and the slide rail on each is slidably connected with the sliding block, and the outer wall of two sliding blocks is connected with the scraper bar in common, and the scraper bar is connected with a plurality of high pressure spray head in common, and the sliding block is connected with the collection box in common, and the bottom plate is connected with the water tank, and the utility model discloses through water pump to deliver the cleaning fluid in the water tank to the scraper bar, and form high pressure injection through a plurality of high pressure spray heads, can carry out the powerful washing of residual liquid of sample inlet relevant area, and realizes stable sliding under the action of the slide rail and the sliding block simultaneously with the scraper bar, can carry out the overall scraping of filter plate and surrounding residual liquid, and remove residual liquid remains, avoid sample cross -contamination, do not need to rely on manual repeated wiping or simple washing, and the manual operation step and time cost are reduced greatly, and the residual liquid cleaning efficiency is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of analytical instrument auxiliary technology, and in particular to a structure for cleaning residual liquid at the injection port of a liquid chromatograph. Background Technology

[0002] In the field of modern analytical testing, liquid chromatography (LC) is a key instrument for efficient separation and quantitative analysis. It has been widely used in many important fields such as pharmaceutical research and development, food safety testing, environmental monitoring, and quality control of chemical products. Its core function is to utilize the difference in the distribution coefficients of each component in a mixture between the stationary phase and the mobile phase, and to achieve efficient separation of each component through the elution effect of the mobile phase. Combined with the corresponding detector, it completes qualitative and quantitative analysis.

[0003] During the use of liquid chromatographs, the injection port is a key component for sample entry into the instrument. If the residual liquid in the port is not cleaned in time, it can easily lead to cross-contamination of samples, affecting the accuracy and repeatability of test results. At the same time, long-term accumulation of residual liquid may also corrode the injection port components and shorten the service life of the instrument. Traditional cleaning methods mostly rely on manual wiping or simple rinsing, which are not only inefficient and have poor cleaning effects, but also fail to meet the cleanliness requirements of high-precision experimental analysis. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a residual liquid cleaning structure for the injection port of a liquid chromatograph, solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a residual liquid cleaning structure for the injection port of a liquid chromatograph, comprising a base plate, a filter box, and a housing. A filter plate is connected inside the filter box. Two slide rails are connected to the filter box, and a slider is slidably connected to each slide rail. A scraper is connected to the outer wall of both sliders. Multiple high-pressure nozzles are connected to the scraper. A collection box is connected to both sliders. A water tank is connected to the base plate, and a water pump is connected to the water tank. A water pipe is connected to the output end of the water pump. The end of the water pipe furthest from the water pump passes through the housing and connects to the scraper.

[0006] As a further technical solution of this utility model, a suction box is connected to the base plate, and a fan is connected to the outer wall of the suction box.

[0007] As a further technical solution of this utility model, the outer wall of the suction box is connected to a second suction tube, and the end of the second suction tube away from the suction box passes through the box body and is connected to the collection box.

[0008] As a further technical solution of this utility model, the outer wall of the suction box is connected to a first suction pipe, and the end of the first suction pipe away from the suction box is connected to a collection box, and the bottom surface of the collection box is connected to the base plate.

[0009] As a further technical solution of this utility model, the base plate is connected to a liquid storage tank, and a pump body is connected to the liquid storage tank.

[0010] As a further technical solution of this utility model, the output end of the pump body is connected to a connecting pipe, and the end of the connecting pipe away from the pump body is connected to the filter box.

[0011] As a further technical solution of this utility model, the upper surface of the box is connected to the bottom surface of the filter box, and a control cabinet is connected to the bottom plate.

[0012] This invention provides a residual liquid cleaning structure for the injection port of a liquid chromatograph, which has the following advantages compared with the prior art:

[0013] 1. This design discloses a residual liquid cleaning structure for the injection port of a liquid chromatograph. The invention utilizes a water pump to deliver cleaning solution from the water tank to the scraper, which then sprays the solution through multiple high-pressure nozzles. This powerfully flushes the residual liquid in the relevant area of ​​the injection port. Simultaneously, the scraper, guided by a slide rail and slider, achieves stable sliding, thoroughly scraping away residual liquid from the filter plate and surrounding area. This eliminates sample cross-contamination and eliminates the need for repeated manual wiping or simple rinsing, significantly reducing manual operation steps and time costs, and greatly improving residual liquid cleaning efficiency. It is particularly suitable for instrument maintenance needs in high-frequency experimental scenarios.

[0014] 2. This design provides a residual liquid cleaning structure for the injection port of a liquid chromatograph. By setting a suction box on the base plate and combining it with a fan, a first suction tube, a second suction tube, and a collection box, it achieves the collection and treatment of impurities. The suction provided by the fan can draw impurities from inside the collection box through the second suction tube, and at the same time, it draws impurities from the collection box into the suction box through the second suction tube. This not only improves the automation of impurity cleaning and reduces the trouble of manual operation, but also effectively improves the overall impurity treatment efficiency and cleanliness maintenance capability of the equipment. Attached Figure Description

[0015] Figure 1 A front view of a liquid chromatograph inlet residual liquid cleaning structure;

[0016] Figure 2 A rear view of a liquid chromatograph inlet residual liquid cleaning structure;

[0017] Figure 3 A cross-sectional view of the filter box housing of a liquid chromatograph inlet residual liquid cleaning structure;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the cleaning component in a liquid chromatograph inlet residual liquid cleaning structure.

[0019] In the diagram: 1. Base plate; 2. Box body; 3. Water tank; 4. Control cabinet; 5. Collection box; 6. Water pipe; 7. Filter box; 8. Connecting pipe; 9. Storage tank; 10. Pump body; 11. First suction pipe; 12. Sludge suction box; 13. Fan; 14. Second suction pipe; 15. Water pump; 16. Slider; 17. Filter plate; 18. Slide rail; 19. Scraper; 20. Collection box; 21. High-pressure nozzle. Detailed Implementation

[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution for cleaning residual liquid at the injection port of a liquid chromatograph: it includes a base plate 1, a filter box 7, and a housing 2. A filter plate 17 is connected inside the filter box 7. Two slide rails 18 are connected to the filter box 7, and a slider 16 is slidably connected to each slide rail 18. A scraper 19 is connected to the outer wall of the two sliders 16. Multiple high-pressure nozzles 21 are connected to the scraper 19. A collection box 20 is connected to the two sliders 16. A water tank 3 is connected to the base plate 1, and a water pump 15 is connected to the water tank 3. A water pipe 6 is connected to the output end of the water pump 15. The end of the water pipe 6 away from the water pump 15 passes through the housing 2 and is connected to the scraper 19. Water in the water tank 3 is transported to the scraper 19 through the water pipe 6 under the action of the water pump 15, and then sprayed out through multiple high-pressure nozzles 21 on the scraper 19 to rinse the filter plate 17 in the filter box 7. At the same time, the slider 16 slides along the slide rail 18, driving the scraper 19 to move synchronously. While the high-pressure water is rinsing, the surface of the filter plate 17 is scraped and cleaned. The impurities generated during cleaning are collected with the water flow into the collection box 20 connected to the slider 16, thus achieving efficient cleaning of the filter plate 17.

[0022] A suction box 12 is connected to the base plate 1. A fan 13 is connected to the outer wall of the suction box 12. A second suction pipe 14 is connected to the outer wall of the suction box 12. The end of the second suction pipe 14 away from the suction box 12 passes through the box body 2 and is connected to the collection box 20. A first suction pipe 11 is connected to the outer wall of the suction box 12. The end of the first suction pipe 11 away from the suction box 12 is connected to the collection box 5. The bottom surface of the collection box 5 is connected to the base plate 1. When the device is started, the fan 13 connected to the outer wall of the suction box 12 starts to run. During the operation of the fan 13, a negative pressure environment is formed inside the suction box 12. Since the suction box 12 is connected to the collection box 20 through the first suction pipe 11, under the action of negative pressure, the impurities in the collection box 20 will be sucked into the second suction pipe 14 and transported to the suction box 12 along the second suction pipe 14. The impurities entering the suction box 12 will then be pushed by the airflow generated by the fan 13 through the first suction pipe 11 connected to the outer wall of the suction box 12. Finally, the impurities will enter the collection box 5 along the first suction pipe 11, completing the entire impurity collection process and realizing the orderly collection and treatment of impurities.

[0023] The base plate 1 is connected to a liquid storage tank 9, and a pump body 10 is connected to the liquid storage tank 9. The output end of the pump body 10 is connected to a connecting pipe 8. The end of the connecting pipe 8 away from the pump body 10 is connected to the filter box 7. The liquid storage tank 9 on the base plate 1 is used to store liquid. When the equipment is working, the liquid in the liquid storage tank 9 is drawn out by the pump body 10, and after being pressurized by the pump body 10, it is transported to the filter box 7 through the connecting pipe 8, thus completing the process of liquid flow from storage to transportation to the filtration stage. The upper surface of the box 2 is connected to the bottom surface of the filter box 7. The base plate 1 is connected to a control cabinet 4.

[0024] The working principle of this utility model is as follows: The control cabinet 4 controls the operation of each component. The liquid in the storage tank 9 is transported to the filter box 7 through the pump body 10 and the connecting pipe 8. The liquid is filtered by the filter plate 17 in the filter box 7. At the same time, the water pump 15 transports the water in the water tank 3 to the scraper 19 through the water pipe 6. The scraper 19 is sprayed out through multiple high-pressure nozzles 21. The slider 16 slides along the slide rail 18 to drive the scraper 19 to move and wash the filter plate 17. The impurities generated during washing are scraped into the collection box 20. Then, the fan 13 is started and sucks the impurities in the collection box 20 into the suction box 12 through the second suction pipe 14. At the same time, the first suction pipe 11 can suck the impurities in the collection box 5 into the suction box 12 for centralized processing. The filtered liquid flows down through the connecting structure between the box body 2 and the filter box 7, completing the entire filtration, cleaning and impurity treatment.

[0025] 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 principles 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 are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A residual liquid cleaning structure for the injection port of a liquid chromatograph, characterized in that, The system includes a base plate (1), a filter box (7), and a housing (2). The filter box (7) is connected to a filter plate (17). The filter box (7) is connected to two slide rails (18). Each slide rail (18) is slidably connected to a slider (16). The outer walls of the two sliders (16) are connected to a scraper (19). The scraper (19) is connected to multiple high-pressure nozzles (21). The two sliders (16) are connected to a collection box (20). The base plate (1) is connected to a water tank (3). The water tank (3) is connected to a water pump (15). The output end of the water pump (15) is connected to a water pipe (6). The end of the water pipe (6) away from the water pump (15) passes through the housing (2) and is connected to the scraper (19).

2. The liquid chromatography inlet residual liquid cleaning structure according to claim 1, characterized in that, A suction box (12) is connected to the base plate (1), and a fan (13) is connected to the outer wall of the suction box (12).

3. The liquid chromatography inlet residual liquid cleaning structure according to claim 2, characterized in that, The outer wall of the suction box (12) is connected to a second suction tube (14), and the end of the second suction tube (14) away from the suction box (12) passes through the box body (2) and is connected to the collection box (20).

4. The liquid chromatography inlet residual liquid cleaning structure according to claim 2, characterized in that, The outer wall of the suction box (12) is connected to a first suction pipe (11), and the end of the first suction pipe (11) away from the suction box (12) is connected to a collection box (5), and the bottom surface of the collection box (5) is connected to the base plate (1).

5. The liquid chromatography inlet residual liquid cleaning structure according to claim 1, characterized in that, The base plate (1) is connected to a liquid storage tank (9), and a pump body (10) is connected to the liquid storage tank (9).

6. The liquid chromatography inlet residual liquid cleaning structure according to claim 5, characterized in that, The output end of the pump body (10) is connected to a connecting pipe (8), and the end of the connecting pipe (8) away from the pump body (10) is connected to the filter box (7).

7. The liquid chromatography inlet residual liquid cleaning structure according to claim 1, characterized in that, The upper surface of the box (2) is connected to the bottom surface of the filter box (7), and the control cabinet (4) is connected to the bottom plate (1).

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