Alarm device for reagent evacuation

Abstract

The invention discloses a device for reagent evacuation alarm, and the device comprises a reagent box, a plurality of reagent bottles and a shunting and drainage structure, the plurality of reagent bottles are uniformly installed on the inner side of the reagent box, and the shunting and drainage structure is installed on the inner side of the reagent box.The invention relates to the technical field of chemical experiments. Through the cooperative use of the lifting lead screw module and the lifting limiting bracket, the stable lifting of the drainage tube is realized, the drainage tube can be uniformly inserted into a plurality of reagent bottles, and the operation accuracy and efficiency are improved; and secondly, the combination of the multi-channel switching valve and the liquid extraction hydraulic push rod is adopted, so that the extraction and conveying of various reagents can be completed by only one power pump, and the flow path cost is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of chemical experiments, in particular to a device for alarming when a reagent is evacuated. Background Art

[0002] At present, in the use of fully automatic laboratory analysis instruments, it is common for the reagents used for testing to be used up but not discovered in time, resulting in experimental failure.

[0003] Although there are some reagent volume alarm devices now, they often monitor the reagent remaining amount by weighing the reagent bottle or monitoring the water level of the reagent bottle, or calculate the number of extractions on the software and deduct the volume used each time to estimate the remaining reagent amount.

[0004] The reagent bottle weighing system requires a weighing device under each reagent bottle. The cost of the entire device will be relatively expensive. The reagent bottle water level monitoring also requires the installation of sensors on each reagent bottle, which will also be relatively expensive. Although it is simple to calculate the number of extractions on the software, it is not accurate in actual use because there will always be errors in the pipelines and control components, and there will also be errors in the volume of the reagent bottle itself, which will cause errors in the total amount of reagent consumption.

[0005] Although there are some photoelectric sensors on the market that are used for reagents or medicine vacuum alarms, they can only determine whether bubbles or liquids are flowing in the pipeline, and cannot determine and indicate whether the liquid flowing in the pipeline is correct.

[0006] When conducting an experiment that uses a variety of reagents and where inserting the reagent tube into the wrong reagent bottle will result in experimental failure or instrument damage, the reagent alarm device needs to determine whether the type of liquid passing through the pipeline is correct based on the software timing. If an error is found, an alarm and shutdown must be issued in a timely manner.

[0007] Therefore, there is still a need for a simple, low-cost alarm device that monitors reagent consumption and prompts when the wrong reagent flows through the pipeline. In view of this, in-depth research was conducted on the above-mentioned problem, resulting in this case. Summary of the invention

[0008] To achieve the above purpose, the present invention is implemented through the following technical solutions: a device for reagent empty alarm, comprising: a reagent box, a plurality of reagent bottles and a shunt drainage structure, wherein the plurality of reagent bottles are evenly installed on the inner side of the reagent box, the shunt drainage structure is installed on the inner side of the reagent box, and the shunt drainage structure comprises: a pair of lifting screw modules, a lifting limit bracket, a plurality of drainage tubes, a multi-channel switching valve, a liquid extraction tube, a liquid extraction hydraulic push rod, a liquid extraction disc, a liquid extraction ring rubber ring, a transfer tube, a light sensor, a pure water tank, a reagent common pipe, a waste liquid tank and an air pipe;

[0009] A pair of lifting screw modules are installed in parallel on the inner side of the reagent box, the lifting limit bracket is installed on the movable end of a pair of lifting screw modules, the multi-channel switching valve is installed on the inner side of the reagent box, the pure water tank and the waste liquid tank are installed on the outer side of the reagent box, a number of drainage tubes are connected to the multi-channel switching valve, and a number of drainage tubes are respectively inserted into the lifting limit bracket, the waste liquid tank and the pure water tank, the air pipe and the reagent common pipe are connected to the multi-channel switching valve, the transfer pipe is connected to the multi-channel switching valve, the liquid extraction pipe is connected to the transfer pipe, the liquid extraction hydraulic push rod is installed on the inner side of the liquid extraction pipe, the liquid extraction disc is installed on the liquid extraction hydraulic push rod, the liquid extraction ring rubber ring is installed on the liquid extraction disc, and the light sensor is installed on the transfer pipe.

[0010] Preferably, a fill light is provided on the reagent box.

[0011] Preferably, a plurality of one-way trumpet-shaped rubber rings are provided on the inner sides of the air tube and the reagent common tube.

[0012] Preferably, a reagent rack is provided on the reagent box, and a plurality of reagent bottles are evenly inserted into the reagent rack.

[0013] Preferably, the reagent support is provided with a marking groove.

[0014] Preferably, the reagent rack is provided with a sealing door and a sealing rubber ring.

[0015] Beneficial Effects

[0016] The present invention provides a device for alarming when reagents are evacuated. The device has the following beneficial effects. First, the device for alarming when reagents are evacuated realizes the stable lifting and lowering of the drainage tube by the coordinated use of the lifting screw module and the lifting limit bracket, and can be evenly inserted into multiple reagent bottles, thereby improving the accuracy and efficiency of the operation. Secondly, by adopting the combination of a multi-channel switching valve and a liquid extraction hydraulic push rod, only one power pump is needed to complete the extraction and delivery of multiple reagents, which greatly reduces the cost of the flow path. At the same time, the pure water circuit design can fully clean the common pipeline, avoid cross contamination of reagents, and extend the life of the pipeline and components. The setting of the air circuit enables the light sensor to restore the initial state after each liquid extraction, thereby ensuring the accuracy of monitoring and judgment. In addition, the light sensor is installed on the common pipeline, has no requirements for the reagent bottle, and has strong versatility. The reagent box is also equipped with optimized designs such as a fill light, a one-way trumpet-shaped rubber ring, a reagent bracket, and an identification slot, which further improves the practicality and convenience of the system. The overall design has a low failure rate, low cost, and is easy to maintain and manage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a three-dimensional schematic diagram of a device for reagent empty alarm according to the present invention.

[0018] Figure 2 The present invention is a schematic front and cross-sectional view of a device for alarming the exhaustion of reagents.

[0019] Figure 3 The present invention is a schematic side view of a device for alarming the exhaustion of reagents.

[0020] In the figure: 1. Reagent box; 2. Lifting screw module; 3. Lifting limit bracket; 4. Drainage tube; 5. Multi-channel switching valve; 6. Liquid extraction tube; 7. Liquid extraction hydraulic push rod; 8. Liquid extraction disc; 9. Liquid extraction ring rubber ring; 10. Transfer tube; 11. Light sensor; 12. Pure water tank; 13. Reagent common pipe; 14. Waste liquid tank; 15. Air pipe. DETAILED DESCRIPTION

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0022] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0023] Example

[0024] like Figure 1-3 As shown, several reagent bottles are evenly installed on the inner side of the reagent box 1, and the diversion and drainage structure is installed on the inner side of the reagent box 1. The diversion and drainage structure includes: a pair of lifting screw modules 2, a lifting limit bracket 3, a plurality of drainage tubes 4, a multi-channel switching valve 5, a liquid extraction tube 6, a liquid extraction hydraulic push rod 7, a liquid extraction disc 8, a liquid extraction ring rubber ring 9, a transfer tube 10, a light sensor 11, a pure water tank 12, a reagent common pipe 13, a waste liquid tank 14 and an air pipe 15;

[0025] Specifically, a pair of the lifting screw modules 2 are installed in parallel on the inner side of the reagent box 1, the lifting limit bracket 3 is installed on the movable end of the pair of lifting screw modules 2, the multi-channel switching valve 5 is installed on the inner side of the reagent box 1, the pure water tank 12 and the waste liquid tank 14 are installed on the outer side of the reagent box 1, and a plurality of the drainage tubes 4 are connected to the multi-channel switching valve 5, and a plurality of the drainage tubes 4 are respectively inserted into the lifting limit bracket 3, the waste liquid tank 14 and the plurality of drainage tubes 4. and pure water tank 12, the air pipe 15 and the reagent common pipe 13 are connected to the multi-channel switching valve 5, the transfer pipe 10 is connected to the multi-channel switching valve 5, the liquid extraction pipe 6 is connected to the transfer pipe 10, the liquid extraction hydraulic push rod 7 is installed on the inner side of the liquid extraction pipe 6, the liquid extraction disc 8 is installed on the liquid extraction hydraulic push rod 7, the liquid extraction ring rubber ring 9 is installed on the liquid extraction disc 8, and the light sensor 11 is installed on the transfer pipe 10;

[0026] It should be noted that, in the above, the reagent bottles are regularly inserted into the inner side of the reagent holder, and a pair of lifting screw modules 2 are operated to drive the lifting limit holder 3 thereon to be stably lifted and lowered, and the lifting limit holder 3 drives the plurality of drainage tubes 4 thereon to be stably lifted and lowered, so that the plurality of drainage tubes 4 are uniformly inserted into the inner side of the plurality of reagent bottles, and the multi-channel switching valve 5 is operated. When the liquid is pumped, the liquid pumping hydraulic push rod 7 on the inner side of the liquid pumping tube 6 works to drive the liquid pumping disc 8 thereon to be stably lifted and lowered on the inner side of the liquid pumping tube 6, thereby changing the inner air pressure inside the liquid pumping tube 6, and the corresponding reagent channel of the multi-channel switching valve 5 is opened, and the corresponding reagent is sucked into the inner side of the liquid pumping tube 6, and then the multi-channel switching valve 5 on the reagent common pipe 13 is opened, and then By running the pumping hydraulic push rod 7 in reverse, the pumping disc 8 on it is driven to rise and fall stably, and the reagent is transported out by pushing the pumping disc 8. A light sensor 11 is provided on the transfer tube 10 between the multi-channel switching valve 5 and the pumping tube 6. When the equipment does not start pumping liquid, there is air in the transfer tube 10 where the optical sensor is located. When the pumping hydraulic push rod 7 starts to run, after a certain period of time, the liquid will pass through this section of the tube, and the pipeline state detected by the optical sensor will change. Therefore, it can be identified that there is still liquid in the reagent bottle. When there is no more liquid in the reagent bottle, there is always only air in the tube passing through the optical sensor. Therefore, as long as the sensor does not detect that there is liquid flowing through the transfer tube 10 within a specified time after the pumping hydraulic push rod 7 starts to work. , it can be determined that the reagent bottle is emptied, and an alarm can be triggered in time and the instrument can be automatically paused. In order to prevent cross-contamination of different reagents, after each reagent is delivered, the pipeline is cleaned with pure water inside the pure water tank 12, and then air is pumped out through the air pipe 15 to drain the residual liquid. Then the optical sensor returns to the initial state, the tube is filled with gas, and waits for the next reagent extraction to be monitored. The fixing part fixes the reagent tube between the input and output ends of the sensor. When each reagent passes through the pipeline, the output voltage of the light sensor 11 received by the circuit board is different. When there is air in the transfer tube 10, the output voltage of the light sensor 11 is also different. Therefore, the program will output the voltage according to the time axis and the time when each reagent passes through the tube set in the software. The input voltage range is compared with that of the circuit to determine whether the correct reagent is passing through the pipeline at this time. The entire system uses only one sensor, with low failure rate and low cost; multiple reagents only need one liquid extraction hydraulic push rod 7 and a multi-way switching valve, which greatly reduces the cost of the flow path itself compared with the traditional flow path where each reagent requires a power pump; the pure water circuit can fully flush the common pipeline passing through different reagents to avoid cross contamination of different reagents, and automatically completes the cleaning of the pipeline and components, removes the residual flow of reagents in the pipeline, and extends the life of the pipeline, joints and pump valve components; the air circuit can make the light sensor 11 refill the pipeline with gas after each liquid extraction and transportation, restore the initial state, and make subsequent monitoring and judgment more accurate;The sensor monitors whether there is gas or liquid in the pipeline to determine whether the pipeline has been evacuated. This is more accurate and avoids the error of weighing or liquid level measurement. The light sensor 11 is installed on the common pipeline, that is, the transfer tube 10. This solution has no requirements for the size and material of the reagent bottle. Any reagent bottle can adopt this solution. If weighing or liquid level sensing is used, the sensor is installed on the reagent bottle or at the bottom of the reagent bottle. There are requirements for the size, material, and transparency of the reagent bottle. The versatility is poor and different types of reagent bottles cannot be used interchangeably.

[0027] As a preferred solution, further, the reagent box 1 is provided with a fill light.

[0028] As a preferred solution, further, a plurality of one-way trumpet-shaped rubber rings are provided inside the air tube 15 and the reagent common tube 13 .

[0029] As a preferred solution, further, the reagent box 1 is provided with a reagent rack, and a plurality of reagent bottles are evenly inserted into the reagent rack.

[0030] As a preferred solution, further, a marking groove is provided on the reagent support.

[0031] As a preferred embodiment, further, a sealing door and a sealing rubber ring are provided on the reagent support. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. A device for alarming when a reagent is evacuated, comprising: A reagent box, a plurality of reagent bottles and a shunt drainage structure, wherein the plurality of reagent bottles are evenly installed on the inner side of the reagent box, and the shunt drainage structure is installed on the inner side of the reagent box, characterized in that the shunt drainage structure comprises: a pair of lifting screw modules, a lifting limit bracket, a plurality of drainage tubes, a multi-channel switching valve, a liquid extraction tube, a liquid extraction hydraulic push rod, a liquid extraction disc, a liquid extraction ring rubber ring, a transfer tube, a light sensor, a pure water tank, a reagent common pipe, a waste liquid tank and an air pipe; A pair of lifting screw modules are installed in parallel on the inner side of the reagent box, the lifting limit bracket is installed on the movable end of a pair of lifting screw modules, the multi-channel switching valve is installed on the inner side of the reagent box, the pure water tank and the waste liquid tank are installed on the outer side of the reagent box, a number of drainage tubes are connected to the multi-channel switching valve, and a number of drainage tubes are respectively inserted into the lifting limit bracket, the waste liquid tank and the pure water tank, the air pipe and the reagent common pipe are connected to the multi-channel switching valve, the transfer pipe is connected to the multi-channel switching valve, the liquid extraction pipe is connected to the transfer pipe, the liquid extraction hydraulic push rod is installed on the inner side of the liquid extraction pipe, the liquid extraction disc is installed on the liquid extraction hydraulic push rod, the liquid extraction ring rubber ring is installed on the liquid extraction disc, and the light sensor is installed on the transfer pipe.

2. A device for reagent emptying alarm according to claim 1, characterized in that: The reagent box is provided with a fill light.

3. A device for reagent empty alarm according to claim 2, characterized in that: A plurality of one-way trumpet-shaped rubber rings are arranged inside the air pipe and the reagent common pipe.

4. A device for reagent empty alarm according to claim 3, characterized in that: The reagent box is provided with a reagent support, and a plurality of reagent bottles are evenly inserted into the reagent support.

5. A device for reagent empty alarm according to claim 4, characterized in that: The reagent support is provided with a marking groove.

6. A device for reagent empty alarm according to claim 5, characterized in that: The reagent support is provided with a sealing door and a sealing rubber ring.

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