Reagent pipeline no-load early warning device

Abstract

The utility model relates to the field of chromatographic instruments, and discloses a reagent pipeline no-load early warning device which comprises a reagent bottle, a first communicating pipe and a second communicating pipe are inserted into the reagent bottle, the right end of the first communicating pipe is connected to the left side of a three-way connector, and the upper end of the second communicating pipe is bent upwards to form a protruding pipe part. A protruding pipe part is arranged on the left side of the reagent bottle, a bubble sensor is arranged on the protruding pipe part, a butt joint pipe is connected to the right end of the protruding pipe part, the end, away from the protruding pipe part, of the butt joint pipe is connected to the left side of a three-way connector, and a reagent pipe is connected to the right end of the three-way connector. The tilting pipe part at the bottom end of the communicating pipe II is positioned above the bottom end of the communicating pipe I, and a bubble sensor arranged on the convex pipe part of the communicating pipe II is matched, so that a signal can be sent out to remind a worker that the reagent in the reagent bottle is insufficient and needs to be supplemented and replaced, and the condition of no load of the reagent pipe is avoided.

Description

Technical Field

[0001] The utility model relates to the field of chromatographs, in particular to a reagent pipeline empty-load early warning device. Background Art

[0002] When the chromatograph is performing chromatographic separation analysis, the reagent tube in the injection system needs to be plugged into the reagent bottle containing the reagent. The reagent bottle is usually placed on the top or side of the chromatograph. Since the reagent bottle is usually in the blind spot of the user's field of vision, it is difficult for the user to grasp the changes in the reagent level in the reagent bottle in time during chromatographic separation analysis, which can easily cause the liquid level in the reagent bottle to be lower than the bottom of the reagent tube, causing the reagent pipeline to be empty, which in turn causes certain errors in chromatographic separation analysis. To this end, we designed a reagent pipeline empty warning device. Utility Model Content

[0003] In order to solve the technical problem that the reagent pipeline is empty due to the liquid level in the reagent bottle being lower than the bottom end of the reagent tube, the utility model provides a reagent pipeline empty warning device.

[0004] The utility model is implemented by the following technical scheme: a reagent pipeline empty load warning device, including a reagent bottle, a connecting tube 1 and a connecting tube 2 are inserted in the reagent bottle, the right end of the connecting tube 1 is connected to the left side of the three-way interface, the upper end of the connecting tube 2 is bent upward to form a raised tube portion, a bubble sensor is provided on the raised tube portion, and the right end of the raised tube portion is connected to a docking tube, one end of the docking tube away from the raised tube portion is connected to the left side of the three-way interface, and the right end of the three-way interface is connected to a reagent tube.

[0005] As a further improvement of the above scheme, the vertical and curved parts of the connecting tube 1 and the connecting tube 2 are connected as a whole through a connecting port, and the raised tube portion and the horizontal part of the connecting tube 1 are connected by two support buckles, and there is a spacing of 5-10 cm between the two, so that there is a certain space between the connecting tube 1 and the raised tube portion, which facilitates the installation of the bubble sensor and the one-way valve, and the connecting tube 1 and the raised tube portion will not be entangled.

[0006] As a further improvement of the above scheme, the bottom end of the connecting tube one extends into the bottom end of the reagent bottle, and the bottom end of the connecting tube two is bent upward to form a raised tube portion, and the top of the raised tube portion is above the connecting tube one, and there is a spacing of 2-3 cm between the two. When the reagent level in the reagent bottle is lower than the top of the raised tube portion, there will not be sufficient or no reagent to flow upward inside the connecting tube one, while the connecting tube two can continue to allow the reagent to be injected normally, giving the user sufficient reaction time without affecting the injection.

[0007] As a further improvement of the above scheme, the sealing plug at the right end of the raised tube portion is connected to a one-way valve, the right opening of the one-way valve is connected to the left end of the docking tube, and the internal flow direction of the one-way valve is from left to right. When the liquid level inside the reagent bottle is lower than the raised tube portion, there will not be sufficient liquid flow inside the connecting tube 2, which prevents the liquid inside the connecting tube 2 and some gas from entering the reagent tube through the one-way valve, so that there will be no bubbles in the liquid level, thereby ensuring the accuracy of chromatographic separation analysis.

[0008] As a further improvement of the above scheme, the left end of the three-way interface is provided with two plug-in interfaces matching the docking tube and connecting tube one, the right end of the three-way interface is provided with a plug-in interface matching the reagent tube, and a collecting chamber is provided inside the three-way interface, and the collecting chamber makes the three plug-in interfaces interconnected, so that the liquid in the reagent tube can enter the reagent tube through connecting tube one and connecting tube two.

[0009] As a further improvement of the above scheme, the connecting tube 1, the docking tube and the reagent tube have the same diameter, the diameter of the collecting cavity is not larger than the diameter of the reagent tube, and when there is no liquid circulation in the connecting tube 2, the liquid flow in the reagent tube remains unchanged, and bubbles will not be generated due to the appearance of gaps.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model inserts both the connecting tube 1 and the connecting tube 2 into the reagent bottle, and the raised tube portion at the bottom of the connecting tube 2 is located above the bottom of the connecting tube 1, and cooperates with the bubble sensor provided on the raised tube portion of the connecting tube 2, which can send out a signal to remind the staff that the reagent in the reagent bottle is insufficient and needs to be replenished and replaced, thereby avoiding the situation where the reagent tube is empty;

[0012] 2. By extending connecting tube 1 and connecting tube 2 into the reagent bottle at the same time, the bottom end of connecting tube 1 is at the bottom end of the tilted tube part, and there will not be sufficient or no reagent to flow upward inside connecting tube 1, while connecting tube 2 can continue to allow reagent injection normally, giving the user a sufficient reaction time without affecting the injection. In addition, with the one-way valve set, the liquid and some gas inside connecting tube 2 cannot enter the reagent tube through the one-way valve, so that there will be no bubbles in the liquid level, thereby ensuring the accuracy of chromatographic separation and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a reagent pipeline empty-load warning device provided by the utility model;

[0014] Figure 2 for Figure 1 A partial cross-sectional view of

[0015] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0016] Figure 4 for Figure 1 Schematic diagram of the structure without reagent bottles installed.

[0017] Description of main symbols:

[0018] 1. Reagent bottle; 2. Connecting tube 1; 3. Connecting tube 2; 31. Raised tube portion; 32. Curved tube portion; 4. Connecting buckle; 41. Support buckle; 5. One-way valve; 6. Butt joint; 7. Three-way interface; 71. Collecting chamber; 8. Reagent tube; 9. Bubble sensor. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0020] Example:

[0021] Please combine Figure 1-Figure 4 A reagent pipeline empty load warning device of the present embodiment includes a reagent bottle 1, a connecting tube 2 and a connecting tube 3 are inserted into the reagent bottle 1, the right end of the connecting tube 2 is connected to the left side of the three-way interface 7, the upper end of the connecting tube 2 3 is bent upward to form a protruding tube portion 31, a bubble sensor 9 is provided on the protruding tube portion 31, and the right end of the protruding tube portion 31 is connected to a docking tube 6, the end of the docking tube 6 away from the protruding tube portion 31 is connected to the left side of the three-way interface 7, and the right end of the three-way interface 7 is connected to a reagent tube 8.

[0022] The vertical and curved parts of connecting tube 1 2 and connecting tube 2 3 are connected as a whole through the connecting port, and the raised tube portion 31 is connected to the horizontal part of connecting tube 2 through two support buckles 41, and there is a spacing of 5-10 cm between the two, so that there is a certain space between connecting tube 1 2 and the raised tube portion 31, which is convenient for installing the bubble sensor 9 and the one-way valve 5, and the connecting tube 2 and the raised tube portion 31 will not be entangled.

[0023] The bottom end of connecting tube 1 2 extends into the bottom end of the reagent bottle 1, and the bottom end of connecting tube 2 3 is bent upward to form a raised tube portion 32, and the top of the raised tube portion 32 is above connecting tube 1 2, and there is a 2-3 cm gap between the two. When the reagent level in the reagent bottle 1 is lower than the top of the raised tube portion 32, there will not be sufficient or no reagent to flow upward inside connecting tube 1 2, and connecting tube 2 3 can continue to allow the reagent to be injected normally, giving the user sufficient reaction time without affecting the injection.

[0024] The sealing plug at the right end of the raised tube portion 31 is connected to a one-way valve 5, the right opening of the one-way valve 5 is connected to the left end of the docking tube 6, and the flow direction inside the one-way valve 5 is from left to right. When the liquid level inside the reagent bottle 1 is lower than the raised tube portion 32, there will not be sufficient liquid flow inside the connecting tube 2 3, which prevents the liquid inside the connecting tube 2 3 and some gas from entering the reagent tube 8 through the one-way valve 5, so that there will be no bubbles in the liquid level, thereby ensuring the accuracy of chromatographic separation analysis.

[0025] The left end of the three-way interface 7 is provided with two plug interfaces matching the docking tube 6 and the connecting tube 1 2, the right end of the three-way interface 7 is provided with a plug interface matching the reagent tube 8, and a collecting chamber 71 is provided inside the three-way interface 7. The collecting chamber 71 makes the three plug interfaces interconnected, so that the liquid in the reagent tube 8 can enter the reagent tube 8 through the connecting tube 1 2 and the connecting tube 2 3.

[0026] The calibers of the connecting tube 2, the docking tube and the reagent tube 8 are consistent, and the caliber of the collecting chamber 71 is not larger than the caliber of the reagent tube 8. When there is no liquid circulation in the connecting tube 2 3, the liquid flow in the reagent tube 8 remains unchanged, and bubbles will not be generated due to the appearance of gaps.

[0027] The implementation principle of an 8-way empty warning device for reagent tubes in the embodiment of the present application is as follows: in actual use, the liquid in the reagent bottle 1 can be continuously transported upward through the connecting tube 1 2 and the connecting tube 2 3, and is collected through the three-way interface 7 and then injected through the reagent tube 8. When the liquid level in the reagent bottle 1 is lower than the top of the tilted tube part 32, there will no longer be sufficient liquid flowing inside the connecting tube 2 3 at this time, and a certain amount of bubbles will be generated inside the connecting tube 2 3. At this time, there is a large acoustic impedance difference between the liquid and the gas. This large impedance mismatch will form an acoustic mirror, which can reflect the ultrasonic wave generated by the bubble sensor 9 back to the direction of the transmitter. At this time, the bubble sensor 9 will not receive the ultrasonic wave, and the bubble sensor 9 will send a signal to remind the staff that the reagent in the reagent bottle 1 is insufficient and needs to be replenished and replaced;

[0028] By inserting both the connecting tube 1 2 and the connecting tube 2 3 into the reagent bottle 1, and the raised tube portion 32 at the bottom of the connecting tube 2 3 is located above the bottom of the connecting tube 1 2, and cooperating with the bubble sensor 9 provided on the raised tube portion 31 of the connecting tube 2 3, it can send out a signal to remind the staff that the reagent in the reagent bottle 1 is insufficient and needs to be replenished and replaced, thereby avoiding the situation where the reagent tube 8 is empty;

[0029] By simultaneously extending the connecting tube 1 2 and the connecting tube 2 3 into the reagent bottle 1, the bottom end of the connecting tube 1 2 is at the bottom end of the tilted tube portion 32, and there will not be sufficient or no reagent to flow upward inside the connecting tube 2, while the connecting tube 2 3 can continue to allow the reagent to be injected normally, giving the user a sufficient reaction time without affecting the injection. In addition, with the one-way valve 5 provided, the liquid and part of the gas inside the connecting tube 2 3 cannot enter the reagent tube 8 through the one-way valve 5, so that there will be no bubbles in the liquid level, thereby ensuring the accuracy of the chromatographic separation analysis.

[0030] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A reagent pipeline empty warning device, comprising a reagent bottle (1), characterized in that: A connecting tube 1 (2) and a connecting tube 2 (3) are inserted into the reagent bottle (1); the right end of the connecting tube 1 (2) is connected to the left side of the three-way interface (7); the upper end of the connecting tube 2 (3) is bent upward to form a protruding tube portion (31); a bubble sensor (9) is provided on the protruding tube portion (31); and the right end of the protruding tube portion (31) is connected to a docking tube (6); the end of the docking tube (6) away from the protruding tube portion (31) is connected to the left side of the three-way interface (7); and the right end of the three-way interface (7) is connected to a reagent tube (8).

2. A reagent pipeline empty warning device as claimed in claim 1, characterized in that: The vertical and curved parts of the connecting pipe 1 (2) and the connecting pipe 2 (3) are connected as a whole through a connecting port, and the raised pipe part (31) is connected to the horizontal part of the connecting pipe 1 (2) through two supporting buckles (41), and there is a distance of 5-10 cm between the two.

3. A reagent pipeline empty warning device as claimed in claim 1, characterized in that: The bottom end of the connecting tube 1 (2) extends into the bottom end of the reagent bottle (1), and the bottom end of the connecting tube 2 (3) is bent upward to form a raised tube portion (32), and the top of the raised tube portion (32) is located above the connecting tube 1 (2), and there is a distance of 2-3 cm between the two.

4. A reagent pipeline empty warning device as claimed in claim 1, characterized in that: The sealing plug at the right end of the raised pipe portion (31) is connected to a one-way valve (5), the right opening of the one-way valve (5) is connected to the left end of the butt-joint pipe (6), and the flow direction inside the one-way valve (5) is from left to right.

5. A reagent pipeline empty warning device as claimed in claim 1, characterized in that: The left end of the three-way interface (7) is provided with two plug-in interfaces matching the docking tube (6) and the connecting tube 1 (2), the right end of the three-way interface (7) is provided with a plug-in interface matching the reagent tube (8), and a collecting chamber (71) is provided inside the three-way interface (7), and the collecting chamber (71) enables the three plug-in interfaces to communicate with each other.

6. A reagent pipeline empty warning device as claimed in claim 5, characterized in that: The calibers of the connecting tube 1 (2), the butt joint tube (6) and the reagent tube (8) are consistent, and the caliber of the collecting chamber (71) is not larger than the caliber of the reagent tube (8).

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