Detoxification system of liquid chromatograph

Abstract

The utility model discloses a detoxification system of a liquid chromatograph, which comprises a waste liquid collecting pipe connected with the liquid chromatograph and a waste gas discharge pipe, and the output end of the waste liquid collecting pipe and the input end of the waste gas discharge pipe penetrate into the inner side of a bottle cap; the bottle cap is installed on the support, a channel allowing the waste liquid collecting bottle to transversely move relative to the bottle cap is arranged below the bottle cap, and an inflatable sealing structure is arranged between the outer edge of the bottom of the bottle cap and the outer edge of a bottle opening of the waste liquid collecting bottle. According to the detoxification system of the liquid chromatograph, provided by the utility model, the waste liquid collecting bottle can be quickly replaced, and the problem that waste liquid in the waste liquid collecting pipe drops on the ground or a table top is avoided.

Description

Technical Field

[0001] The utility model relates to the field of liquid chromatograph detoxification, in particular to a liquid chromatograph detoxification system. Background Art

[0002] A liquid chromatograph is an instrument that uses the difference in the distribution ratio of a mixture between liquid and solid or between two immiscible liquids to first separate the mixture and then analyze and identify it. During use, a liquid chromatograph produces waste liquid, which will volatilize toxic gases such as methanol and acetonitrile. Therefore, it needs to be treated in a timely manner. Generally, the waste liquid is collected into a waste liquid collection bottle through a waste liquid collection tube, and then the waste gas is discharged through an exhaust gas discharge pipe. However, when the liquid in the waste liquid collection bottle is full, it is necessary to disassemble the waste liquid collection bottle from the bottle cap and replace it with a new one. Since the waste liquid collection bottle and the cap provided with the waste liquid collection tube and the exhaust gas discharge pipe are connected by a threaded connection method, the old waste liquid collection bottle needs to be unscrewed before the new one can be replaced. During the replacement process, the cap is suspended in the air for a long time, and a small amount of waste liquid still remains in the waste liquid collection tube. When the waste liquid collection bottle is separated from the bottle cap, the waste liquid in the waste liquid collection tube is likely to drip onto the ground or countertop, which makes it difficult to clean the ground or countertop after being stained with waste liquid. Utility Model Content

[0003] The utility model aims to provide a detoxification system for a liquid chromatograph, which can realize rapid replacement of a waste liquid collection bottle and avoid the problem that waste liquid from the waste liquid collection tube drips onto the ground or a table.

[0004] To achieve the above-mentioned purpose, the utility model provides a detoxification system for a liquid chromatograph, comprising a waste liquid collection tube for connection to the liquid chromatograph, and a waste gas exhaust pipe, wherein the output end of the waste liquid collection tube and the input end of the waste gas exhaust pipe are both inserted into the inner side of the bottle cap; the bottle cap is mounted on a bracket, and a channel is provided under the bottle cap for the waste liquid collection bottle to move laterally relative to the bottle cap, and an inflatable sealing structure is provided between the bottom of the bottle cap and the outer edge of the bottle mouth of the waste liquid collection bottle.

[0005] As a further improvement of the present invention, the exhaust gas exhaust pipe is sequentially connected to an exhaust gas treatment structure and an exhaust fan along the exhaust direction.

[0006] As a further improvement of the present invention, the exhaust gas treatment structure is an activated carbon adsorption device.

[0007] As a further improvement of the present invention, the top of the waste liquid collection bottle is provided with a horizontally arranged end plate, the end plate is square, the bottle mouth is arranged in the middle of the end plate, and the width and length of the end plate are both greater than the maximum cross-sectional diameter of the waste liquid collection bottle.

[0008] As a further improvement of the present invention, the inflatable sealing structure includes a sealing airbag arranged at the bottom of the bottle cap. The sealing airbag is annular and has a hollow structure. The sealing airbag is connected to an inflation and deflation device. When the sealing airbag is inflated, it contacts and cooperates with the top surface of the end plate.

[0009] As a further improvement of the present invention, the inflation and deflation device includes an inflation and deflation pipe and an inflation and deflation pump, and the sealing airbag, the inflation and deflation pipe and the inflation and deflation pump are connected in sequence.

[0010] As a further improvement of the present invention, two symmetrically arranged guide grooves are provided in the channel of the bracket, and the two side edges of the end plate of the waste liquid collection bottle are respectively slidably matched with the two guide grooves.

[0011] As a further improvement of the present invention, the bracket includes a gantry and a base connected in sequence from top to bottom, the inner side of the gantry constitutes the channel, the guide slide is arranged on the inner wall of the gantry, and the bottle cap is arranged on the top of the gantry; the length of the base is greater than the length of the gantry; the top of the base is rotatably connected to multiple rubber rollers, and the rubber rollers are arranged along the moving direction of the waste liquid collection bottle.

[0012] Beneficial effects

[0013] Compared with the prior art, the advantages of the detoxification system of the liquid chromatograph of the utility model are:

[0014] 1. When collecting waste liquid normally, the waste liquid collection bottle and the bottle cap are sealed by an inflatable sealing structure. At this time, the waste liquid passing through the waste liquid collection tube will flow into the waste liquid collection bottle. When the waste liquid collection bottle needs to be replaced, the gas in the inflatable sealing structure is discharged, the seal is released, and the new waste liquid collection bottle is placed on the side of the old waste liquid collection bottle. The new waste liquid collection bottle is pushed and the old waste liquid collection bottle is pushed away from the original station through the new waste liquid collection bottle so that the new waste liquid collection bottle is located directly under the bottle cap. At this time, the inflatable sealing structure is re-inflated to achieve sealing, and the replacement of the new waste liquid collection bottle is completed. The mouth of the waste liquid collection bottle that is filled with waste liquid can be plugged with a stopper and transported to the subsequent station. This process can realize the rapid replacement of the waste liquid collection bottle and reduce the chance of waste liquid remaining in the waste liquid collection tube dripping onto the ground or countertop.

[0015] 2. The waste liquid collection bottle is topped with a horizontal end plate. Both its width and length are larger than the bottle's maximum cross-sectional diameter. When the old waste liquid collection bottle is pushed away from its original station by the new one, the end plates of the two waste liquid collection bottles are adjacent and in contact, preventing any gaps through which dripping waste liquid could pass. Furthermore, the edges of the end plates slide in conjunction with guide slots to ensure the accuracy of the waste liquid collection bottle's movement.

[0016] 3. The sealing structure adopts a sealing airbag, which is inflated and deflated by an inflation and deflation device. When the sealing airbag is inflated and contacts the end plate, the seal between the bottle cap and the waste liquid collection bottle can be achieved.

[0017] 4. The activated carbon adsorption device can adsorb the volatile methanol and acetonitrile gases to prevent the harmful gases from being discharged into the outside air.

[0018] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is one of the main cross-sectional views of the detoxification system of the liquid chromatograph;

[0021] Figure 2 This is the second main cross-sectional view of the detoxification system of the liquid chromatograph;

[0022] Figure 3 is a top view of the end plate;

[0023] Figure 4 It is a partial cross-sectional view from the left side of the detoxification system of the liquid chromatograph. DETAILED DESCRIPTION

[0024] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] Example

[0026] The specific implementation of the utility model is as follows Figures 1 to 4 As shown, a detoxification system for a liquid chromatograph includes a waste liquid collection tube 5 for connection to the liquid chromatograph and an exhaust gas discharge tube 7. The output end of the waste liquid collection tube 5 and the input end of the exhaust gas discharge tube 7 both penetrate the inner side of a bottle cap 1. The bottle cap 1 is mounted on a bracket 2. A channel 20 is provided below the bottle cap 1 for lateral translation of the waste liquid collection bottle 6 relative to the bottle cap 1. An inflatable seal is provided between the bottom of the bottle cap 1 and the outer edge of the bottle mouth 61 of the waste liquid collection bottle 6.

[0027] The exhaust pipe 7 is connected to an exhaust gas treatment structure and an exhaust fan 9 in sequence along the exhaust direction. The exhaust gas treatment structure is an activated carbon adsorption device 8, which can adsorb the volatile methanol and acetonitrile gases when exhausting through the exhaust pipe 7, preventing harmful gases from being discharged into the outside air.

[0028] The top of the waste liquid collection bottle 6 is provided with a horizontally arranged end plate 62, the end plate 62 is square, the bottle mouth 61 is arranged in the middle of the end plate 62, and the width and length of the end plate 62 are both larger than the maximum cross-sectional diameter of the waste liquid collection bottle 6. The end plate 62 and the top of the waste liquid collection bottle 6 can be formed in an integral manner, or a detachable connection method can be adopted, for example, the through hole in the middle of the end plate 62 and the top outer wall of the waste liquid collection bottle 6 are connected by a thread. When the end plate 62 and the waste liquid collection bottle 6 are arranged into an integral structure, the bottle mouth 61 can be plugged with a stopper. When the end plate 62 is arranged to be detachable, it is convenient to screw the lid on the bottle mouth of the waste liquid collection bottle 6 (the internal threads of both the lid and the end plate 62 cooperate with the external threads on the outside of the waste liquid collection bottle 6), and it is also convenient to clean the end plate 62.

[0029] The inflatable sealing structure includes a hollow, annular sealing bladder 4 disposed at the bottom of the bottle cap 1. The sealing bladder 4 is connected to an inflation / deflation device 10. When inflated, the sealing bladder 4 comes into close contact with the top surface of the end plate 62, exerting downward pressure on the end plate 62, thereby achieving a seal. After the sealing bladder 4 is deflated by the inflation / deflation device 10, the pressure between the sealing bladder 4 and the top surface of the end plate 62 decreases, allowing the waste liquid collection bottle 6 to be removed.

[0030] The inflation and deflation device 10 includes an inflation and deflation pipe 101 and an inflation and deflation pump 102 , which are connected in sequence to the sealing airbag 4 , the inflation and deflation pipe 101 and the inflation and deflation pump 102 . The inflation and deflation pump 102 is installed outside the bracket 2 .

[0031] Two symmetrically arranged guide slots 23 are provided in the channel 20 of the bracket 2 , and the two side edges of the end plate 62 of the waste liquid collection bottle 6 are slidably engaged with the two guide slots 23 respectively.

[0032] In order to ensure that the waste liquid collection bottle 6 can be accurately positioned directly below the bottle cap 1, a positioning pin 11 can be provided. One end of the positioning pin 11 can pass through the bracket 2 and extend into the positioning hole on the end plate 62 to achieve accurate positioning.

[0033] The bracket 2 includes a gantry 21 and a base 22 connected in sequence from top to bottom. The inner side of the gantry 21 constitutes a channel 20, the guide chute 23 is arranged on the inner wall of the gantry 21, and the bottle cap 1 is arranged on the top of the gantry 21. The length of the base 22 is greater than the length of the gantry 21. The top of the base 22 is rotatably connected to a plurality of rubber rollers 24, and each rubber roller 24 is arranged along the moving direction of the waste liquid collection bottle 6. The rubber roller 24 is used to support the waste liquid collection bottle 6, and when the waste liquid collection bottle 6 is in the process of horizontal movement, its movement resistance can be reduced. The rubber roller 24 with a softer material can also avoid forming a hard contact with the waste liquid collection bottle 6, and avoid the problem of the bottom of the waste liquid collection bottle 6 being broken due to excessive local stress.

[0034] During normal waste liquid collection, the waste liquid collection bottle 6 and the bottle cap 1 are sealed by an inflatable sealing structure. At this time, the waste liquid passing through the waste liquid collection pipe 5 will flow into the waste liquid collection bottle 6, and the waste gas volatilized by the waste liquid in the waste liquid collection bottle 6 will be discharged from the waste gas discharge pipe 7 under the action of the exhaust fan 9. Figure 1 、 2 As shown, when the waste liquid collection bottle 6 needs to be replaced, the gas in the sealing airbag 4 is discharged, the seal is released, and the new waste liquid collection bottle 6 is placed on the side of the old waste liquid collection bottle 6. The new waste liquid collection bottle 6 is pushed to the left, and the old waste liquid collection bottle 6 is pushed away from the original station by the new waste liquid collection bottle 6 so that the new waste liquid collection bottle 6 is located directly below the bottle cap 1. At this time, the sealing airbag 4 is re-inflated to achieve sealing, and the replacement of the new waste liquid collection bottle can be completed. The waste liquid collection bottle 6 that is filled with waste liquid can be plugged with a stopper or the lid is screwed on, and then transported to the subsequent station. This process can realize the rapid replacement of the waste liquid collection bottle and reduce the probability of the waste liquid remaining in the waste liquid collection pipe dripping onto the ground or the table.

[0035] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A detoxification system for a liquid chromatograph, comprising a waste liquid collection tube (5) for connection to the liquid chromatograph, characterized in that: The invention also includes an exhaust gas discharge pipe (7), wherein the output end of the waste liquid collection pipe (5) and the input end of the exhaust gas discharge pipe (7) are both inserted into the inner side of the bottle cap (1); the bottle cap (1) is mounted on the bracket (2); a channel (20) is provided below the bottle cap (1) for the waste liquid collection bottle (6) to move laterally relative to the bottle cap (1); and an inflatable sealing structure is provided between the bottom of the bottle cap (1) and the outer edges of the bottle mouth (61) of the waste liquid collection bottle (6).

2. The detoxification system of a liquid chromatograph according to claim 1, characterized in that: The waste gas discharge pipe (7) is sequentially connected to a waste gas treatment structure and an exhaust fan (9) along the exhaust direction.

3. The detoxification system of a liquid chromatograph according to claim 2, characterized in that: The waste gas treatment structure is an activated carbon adsorption device (8).

4. The detoxification system of a liquid chromatograph according to claim 1, characterized in that: The top of the waste liquid collection bottle (6) is provided with a horizontally arranged end plate (62), the end plate (62) is square, the bottle mouth (61) is arranged in the middle of the end plate (62), and the width and length of the end plate (62) are both greater than the maximum cross-sectional diameter of the waste liquid collection bottle (6).

5. The detoxification system of a liquid chromatograph according to claim 1, characterized in that: The inflatable sealing structure comprises a sealing airbag (4) arranged at the bottom of the bottle cap (1); the sealing airbag (4) is annular and has a hollow structure; the sealing airbag (4) is connected to an inflation and deflation device (10); when the sealing airbag (4) is inflated, it contacts and cooperates with the top surface of the end plate (62).

6. The detoxification system of a liquid chromatograph according to claim 5, characterized in that: The inflation and deflation device (10) comprises an inflation and deflation pipeline (101) and an inflation and deflation pump (102), and the sealing airbag (4), the inflation and deflation pipeline (101) and the inflation and deflation pump (102) are connected in sequence.

7. The detoxification system of a liquid chromatograph according to claim 4, characterized in that: Two symmetrically arranged guide slots (23) are provided in the channel (20) of the bracket (2), and the two side edges of the end plate (62) of the waste liquid collection bottle (6) are respectively slidably matched with the two guide slots (23).

8. The detoxification system of a liquid chromatograph according to claim 7, characterized in that: The bracket (2) comprises a gantry (21) and a base (22) connected in sequence from top to bottom, the inner side of the gantry (21) forms the channel (20), the guide chute (23) is arranged on the inner side wall of the gantry (21), and the bottle cap (1) is arranged on the top of the gantry (21); the length of the base (22) is greater than the length of the gantry (21); the top of the base (22) is rotatably connected to a plurality of rubber rollers (24), and the rubber rollers (24) are arranged along the moving direction of the waste liquid collection bottle (6).

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