Waste liquid collector for liquid chromatograph

Abstract

The utility model discloses a waste liquid collector for a liquid chromatograph, which comprises a collecting container, a liquid discharge valve port is mounted at the front end of the collecting container, a transparent tube is fixed on the side edge of the collecting container, a liquid inlet tube is fixed at the upper end of the collecting container, a threaded seat is mounted on the liquid inlet tube and is connected with a threaded joint, and the threaded joint is connected with the transparent tube. A liquid guide pipe is connected to the threaded connector, a movable rod is arranged in the liquid inlet pipe, a limiting frame is fixed in the collecting container, and a sealing plate is fixed to the front side of the collecting container through a bolt. According to the waste liquid collector for the liquid chromatograph, the self-sealing mechanism is adopted, the sealing mechanism can be automatically opened when waste liquid is collected, normal operation of waste liquid collection is guaranteed, self-sealing can be achieved after the waste liquid collector is disassembled after being fully collected, pollution caused by waste liquid overflowing is effectively avoided, volatile organic reagents can be absorbed in cooperation with an adsorption filter cylinder, and the waste liquid collector is convenient to use. Therefore, the organic reagent is prevented from volatilizing into the air to cause pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of waste liquid collectors, in particular to a waste liquid collector used for a liquid chromatograph. Background Art

[0002] A chromatograph is a device for chromatographic separation and analysis, including a sample injection system, a detection system, a recording and data processing system, a temperature control system, and a mobile phase control system. Modern chromatographs are characterized by stability, sensitivity, versatility, and a high degree of automation, and are widely used in material detection. The mobile phase used in a liquid chromatograph is an organic reagent of a certain concentration. To avoid waste liquid contamination, the waste liquid needs to be collected through a waste liquid bottle. The waste liquid bottles currently used are glass bottles, and the lids are plastic lids with holes punched on them. However, the organic reagents are easily volatilized, causing pollution. Therefore, in view of the above problems, a waste liquid collector for a liquid chromatograph is designed to better meet actual use needs. Utility Model Content

[0003] The utility model aims to provide a waste liquid collector for a liquid chromatograph to solve the problem in the above background technology that organic reagents are easily volatilized and cause pollution.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste liquid collector for a liquid chromatograph, comprising a collecting container, a discharge valve port is installed at the front end of the collecting container, a transparent tube is fixed to the side of the collecting container, a liquid inlet pipe is fixed to the upper end of the collecting container, a threaded seat is installed on the liquid inlet pipe, the threaded seat is connected to a threaded joint, a liquid guide tube is connected to the threaded joint, a movable rod is arranged in the liquid inlet pipe, a limiting frame is fixed in the collecting container, a sealing plate is fixed to the front side of the collecting container by bolts, and a filter cartridge is connected to the side of the liquid inlet pipe.

[0005] Preferably, the lower side of the transparent tube is connected to the collection container, and scale lines are provided on the transparent tube, and a float is slidably connected inside the transparent tube. The above structure constitutes a liquid level meter, so that the staff can observe the liquid level in the collection container.

[0006] Preferably, the threaded joint and the threaded seat are connected by a threaded connection, and the diameter of the threaded joint is greater than the distance between the two vertical rods. Through the above structure, the threaded joint and the threaded seat can be easily disassembled and assembled, and a basic force can be provided for the movement of the vertical rods.

[0007] Preferably, a sealing plug is fixed to the upper end of the movable rod, and the sealing plug is nested with the opening on the liquid inlet pipe to achieve a sealing effect. Vertical rods are also fixed symmetrically on the movable rod, and the vertical rods and the liquid inlet pipe are slidably connected. When the vertical rod moves, a basic force can be provided for the movement of the movable rod and the sealing plug, thereby providing a memory guarantee for the sealing of the release device.

[0008] Preferably, one end of a spring is fixed on the vertical rod, and the other end of the spring is fixed in the liquid inlet pipe, and the elastic action of the spring can provide a basic force for the automatic reset of the vertical rod.

[0009] Preferably, the limiting frame is symmetrically distributed about the center line of the collecting container, and the limiting frame and the filter plate are slidably connected, and the guiding and limiting function of the filter plate can be achieved through the function of the limiting frame.

[0010] Preferably, a filter plate is also fixed on the sealing plate, and the filter plate is located directly below the liquid inlet pipe, and impurities in the waste liquid can be filtered through the filter plate.

[0011] Preferably, cotton is provided in the filter cartridge, and activated carbon is also provided in the filter cartridge. The volatile organic reagent can be absorbed by the action of the cotton and the activated carbon, thereby preventing the organic reagent from volatilizing into the air and causing pollution.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the waste liquid collector for liquid chromatograph adopts a self-sealing mechanism, which can automatically open the sealing mechanism when collecting waste liquid, thereby ensuring the normal collection of waste liquid, and after being fully collected and disassembled, it can achieve self-sealing, effectively avoiding pollution caused by waste liquid overflow, and combined with an adsorption filter cartridge, it can absorb volatile organic reagents, thereby avoiding pollution caused by the volatilization of organic reagents into the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the collection container of the utility model in front view;

[0014] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the collection container of the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the transparent tube cross section of the utility model;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the filter cartridge of the utility model;

[0018] Figure 6It is a schematic diagram of the cross-sectional three-dimensional structure of the threaded joint and the liquid inlet pipe of the utility model.

[0019] In the figure: 1. collecting container; 2. drain valve port; 3. transparent tube; 301. float; 4. liquid inlet pipe; 5. threaded seat; 6. threaded joint; 7. liquid guide tube; 8. movable rod; 801. sealing plug; 802. vertical rod; 9. spring; 10. limit frame; 11. sealing plate; 1101. filter plate; 12. filter cartridge; 1201. cotton; 1202. activated carbon. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-Figure 5 The utility model provides a technical solution: a waste liquid collector for a liquid chromatograph, comprising a collecting container 1, a discharge valve port 2 is installed at the front end of the collecting container 1, a transparent tube 3 is fixed to the side of the collecting container 1, a liquid inlet pipe 4 is fixed to the upper end of the collecting container 1, a threaded seat 5 is installed on the liquid inlet pipe 4, the threaded seat 5 is connected to a threaded joint 6, a liquid guide tube 7 is connected to the threaded joint 6, a movable rod 8 is arranged in the liquid inlet pipe 4, a limiting frame 10 is fixed in the collecting container 1, a sealing plate 11 is fixed to the front side of the collecting container 1 by bolts, and a filter cartridge 12 is connected to the side of the liquid inlet pipe 4.

[0022] The threaded joint 6 and the threaded seat 5 are connected by screw threads, and the diameter of the threaded joint 6 is greater than the distance between the two vertical rods 802; a sealing plug 801 is fixed to the upper end of the movable rod 8, and the sealing plug 801 is nested with the opening on the liquid inlet pipe 4 to achieve a sealing effect, and the movable rod 8 is also symmetrically fixed with vertical rods 802, and the vertical rods 802 and the liquid inlet pipe 4 are slidably connected; one end of a spring 9 is also fixed to the vertical rod 802, and the other end of the spring 9 is fixed in the liquid inlet pipe 4;

[0023] When using the waste liquid collector for liquid chromatography, if Figure 1-Figure 6As shown, the threaded joint 6 is installed by the thread connection between the threaded joint 6 and the threaded seat 5. During the installation process, when the threaded joint 6 contacts the vertical rod 802, continuing to rotate the threaded joint 6 can force the vertical rod 802 to move downward, thereby driving the movable rod 8 and the sealing plug 801 to move downward until the threaded joint 6 and the threaded seat 5 are fully matched. At this time, the sealing plug 801 is completely separated from the opening on the liquid inlet pipe 4, thereby releasing the sealing effect and facilitating the entry of external liquid, and the spring 9 is forced to shrink at this time. When the liquid in the subsequent collection container 1 is fully collected, the threaded joint 6 and the threaded seat 5 are disassembled according to the above principle. With the elastic effect of the spring 9, the sealing plug 801 can be reset and nested with the opening on the liquid inlet pipe 4 to ensure the sealing of the device. After the threaded joint 6 and the threaded seat 5 are connected, the liquid guide tube 7 can be connected to the waste liquid port of the chromatograph, thereby completing the assembly of the device and the chromatograph.

[0024] The lower side of the transparent tube 3 is connected with the collecting container 1, and the transparent tube 3 is provided with scale lines, and a floating ball 301 is slidably connected in the transparent tube 3; the limiting frame 10 is symmetrically distributed about the center line of the collecting container 1, and the limiting frame 10 and the filter plate 1101 are slidably connected; the filter plate 1101 is also fixed on the sealing plate 11, and the filter plate 1101 is located directly below the liquid inlet pipe 4; cotton 1201 is provided in the filter cartridge 12, and activated carbon 1202 is also provided in the filter cartridge 12;

[0025] After the device is assembled, Figure 1-Figure 6 As shown, the waste liquid enters the collection container 1 through the liquid inlet pipe 4, and with the action of the filter plate 1101, the waste liquid can be filtered and impurities removed, and as the liquid enters the collection container 1, the air and volatile organic reagents enter the filter cartridge 12, and with the action of the cotton 1201 and the activated carbon 1202, the organic reagents in the gas can be absorbed, thereby effectively preventing the organic reagents from volatilizing into the air and causing pollution, and through the action of the float 301 and the scale line on the transparent tube 3, the amount of waste liquid can be observed, so that the collection container 1 can be replaced in time later. At the same time, after the device has been used for a long time, the sealing plate 11 and the filter plate 1101 can be disassembled by releasing the bolt lock, so as to clean and replace the filter plate 1101, and when the filter plate 1101 is installed, the stability of the installation of the filter plate 1101 can be guaranteed by the guiding and limiting action of the limit frame 10. This is the working principle of the waste liquid collector for liquid chromatograph.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste liquid collector for a liquid chromatograph, comprising a collection container (1), characterized in that: The front end of the collecting container (1) is provided with a liquid discharge valve (2); a transparent tube (3) is fixed to the side of the collecting container (1); the lower side of the transparent tube (3) is connected to the collecting container (1); a liquid inlet tube (4) is fixed to the upper end of the collecting container (1); a threaded seat (5) is installed on the liquid inlet tube (4); the threaded seat (5) is connected to a threaded joint (6); a liquid guide tube (7) is connected to the threaded joint (6); a movable rod (8) is arranged inside the liquid inlet tube (4); a sealing plug (801) is fixed to the upper end of the movable rod (8); and the sealing plug (801) is nested with the opening on the liquid inlet tube (4) to achieve a sealing effect; a limiting frame (10) is fixed inside the collecting container (1); a sealing plate (11) is fixed to the front side of the collecting container (1) by bolts; and a filter cartridge (12) is connected to the side of the liquid inlet tube (4).

2. A waste liquid collector for a liquid chromatograph according to claim 1, characterized in that: The transparent tube (3) is provided with scale lines, and a floating ball (301) is slidably connected inside the transparent tube (3).

3. A waste liquid collector for a liquid chromatograph according to claim 1, characterized in that: The movable rod (8) is also symmetrically fixed with a vertical rod (802), and the vertical rod (802) is slidably connected to the liquid inlet pipe (4). One end of a spring (9) is also fixed to the vertical rod (802), and the other end of the spring (9) is fixed in the liquid inlet pipe (4).

4. A waste liquid collector for a liquid chromatograph according to claim 1, characterized in that: The limiting frame (10) is symmetrically distributed with respect to the center line of the collection container (1), and the limiting frame (10) and the filter plate (1101) are slidably connected.

5. A waste liquid collector for a liquid chromatograph according to claim 1, characterized in that: A filter plate (1101) is also fixed on the sealing plate (11), and the filter plate (1101) is located directly below the liquid inlet pipe (4).

6. A waste liquid collector for a liquid chromatograph according to claim 1, characterized in that: Cotton (1201) is arranged in the filter cartridge (12), and activated carbon (1202) is also arranged in the filter cartridge (12).

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