Quantitative sample concentrating device

Abstract

The utility model discloses a quantifiable sample concentration device, and particularly relates to the technical field of sample concentration, the quantifiable sample concentration device comprises a concentration tank, the top of the concentration tank is provided with a sealing cover, the bottom of the sealing cover is fixedly provided with a laser liquid level sensor, and one side of the inner wall of the concentration tank is fixedly provided with a temperature sensor; heat exchange boxes are fixedly connected to the two sides of the concentration tank, a connecting pipe is fixedly communicated between the two heat exchange boxes, and a fixed box is fixedly connected to the bottom of the concentration tank. When a solution approaches to a target volume, cooling liquid is cooled by the water cooling block and then exchanges heat with the concentration tank to take away excessive heat, so that excessive volatilization caused by too high temperature of a sample is prevented, high-efficiency cooperation of heating and cooling processes is ensured, the concentration efficiency is improved, the concentration amount is accurately controlled, and the preset concentration amount can be accurately reached; quantitative concentration is realized, excessive concentration caused by improper liquid level or temperature control is avoided, and the accuracy and repeatability of experimental results are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sample concentration, and more specifically, the utility model relates to a quantifiable concentrated sample device. Background Art

[0002] In many fields such as scientific research experiments, biomedical R & D, and environmental monitoring, sample concentration is a crucial pretreatment link, and its treatment effect directly affects the accuracy and reliability of subsequent analysis and detection.

[0003] After retrieval, the Chinese patent with the publication number CN222514505U discloses an automatic sample concentration device. Aiming at the problems that most existing concentration devices use centrifugal separation to concentrate water samples, the concentration ratio error is relatively large compared with the natural precipitation method, and the siphon process of the traditional natural precipitation concentration method is too cumbersome for manual operation, and if the sample is accidentally vibrated during the operation, all previous efforts will be wasted. Through simple and reasonable structural design, it can simplify the subsequent concentration operation process on the premise of realizing natural precipitation concentration of the sample, improve the detection efficiency, and ensure the accuracy of the detection result.

[0004] After retrieval, the Chinese patent with the publication number CN212275401U discloses a sample concentration device. Aiming at the problems in the prior art that the heating method cannot guarantee biological activity and is not suitable for concentrating samples in small and medium-sized systems; the sample needs to be transferred after concentration; the mixture solvent cannot be separately recovered, and the price is expensive. Through simple structure and easy operation, it can be monitored in real time and has a high degree of automation; it is suitable for a wide range of concentrated systems and large throughput, does not require additional inert gas configuration, realizes separate recovery of the mixture solvent, and there is no cross-infection during the concentration process.

[0005] When the concentration device is concentrating, when the sample concentration is close to the target volume, due to the lack of an effective temperature feedback and adjustment mechanism, the temperature is extremely likely to be too high, resulting in excessive evaporation of the sample solvent. It is not only difficult to accurately reach the preset concentration amount and cannot achieve quantitative concentration, but also may damage the effective components in the sample due to high temperature, affecting the accuracy and repeatability of the experimental results. Summary of the Utility Model

[0006] In order to overcome the problems and defects in the prior art, the utility model provides a quantifiable concentrated sample device to solve the problems raised in the above background art.

[0007] To achieve the above object, the utility model provides the following technical solution: A quantifiable concentrated sample device, including a concentration tank, and a sealing cover is arranged on the top of the concentration tank;

[0008] A laser level sensor is fixedly installed at the bottom of the sealing cover, a temperature sensor is fixedly installed on one side of the inner wall of the concentrator tank, heat exchange boxes are fixedly connected to both sides of the concentrator tank, a connecting pipe is fixedly communicated between the two heat exchange boxes, a fixed box is fixedly connected to the bottom of the concentrator tank, a circulating water pump is installed inside the fixed box, and a water cooling block is installed on one side of the circulating water pump inside the fixed box. A circulating pipe is fixedly connected between the heat exchange box, the circulating water pump and the water cooling block. A heating pipe is fixedly installed at the bottom of the inner wall of the concentrator tank. An eddy concentration mechanism is arranged between the concentrator tank and the fixed box.

[0009] Preferably, the eddy concentration mechanism includes an air extraction pump, the air extraction pump is fixedly installed on one side of the fixed box, and an air inlet pipe is fixedly connected to the input end of the air extraction pump.

[0010] Preferably, a filter screen is fixedly installed on the inner wall of the air inlet pipe, the output end of the air inlet pipe is fixedly connected to a connecting air pipe, and one end of the connecting air pipe is fixedly communicated with an annular pipe.

[0011] Preferably, a plurality of air jet pipes are fixedly installed inside the annular pipe, and all the air jet pipes penetrate through the concentrator tank and extend into the concentrator tank.

[0012] Preferably, a pressure relief valve is fixedly installed on one side of the concentrator tank, and scales are arranged on the outer surface of the concentrator tank.

[0013] Preferably, a single-chip microcomputer is fixedly installed on the top of the fixed box, and the single-chip microcomputer is electrically connected to the laser level sensor, the temperature sensor, the circulating water pump and the air extraction pump.

[0014] Preferably, one side of the heat exchange box penetrates through the concentrator tank and extends into the concentrator tank, and the heat exchange box is made of aluminum alloy.

[0015] The technical effects and advantages of the present utility model:

[0016] 1. By controlling the operation of the circulating water pump through the single-chip microcomputer, when the solution approaches the target volume, the coolant is cooled by the water cooling block and then undergoes heat exchange between the heat exchange box and the concentrator tank, timely taking away the excess heat to prevent the sample temperature from being too high and causing excessive volatilization. The heat exchange box made of aluminum alloy and penetrating through the concentrator tank, with good thermal conductivity and a large heat exchange area, efficiently realizes heat transfer, ensures the efficient coordination of the heating and cooling processes, improves the concentration efficiency and ensures the accurate control of the concentration amount. Combined with the laser level sensor, quantitative control of the concentration is achieved, ensuring that the preset concentration amount can be accurately reached, avoiding excessive concentration caused by improper liquid level or temperature control, and ensuring the accuracy and repeatability of the experimental results;

[0017] 2. After the air extraction pump is started, air is extracted through the air inlet pipe, and impurities are filtered by the filter screen to avoid sample contamination. The air is sprayed into the concentration tank through the connecting air pipe, the annular pipe and the jet pipe at a specific angle to form a vortex, which greatly accelerates the evaporation of the solvent on the sample surface, significantly shortens the concentration time, and improves the experimental efficiency. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the rear view structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the front sectional structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the partial transverse sectional structure of the present invention.

[0022] Figure 5 For the present invention Figure 3 The enlarged structure schematic diagram at A in

[0023] The reference numerals are: 1. Concentration tank; 2. Sealing cover; 3. Laser liquid level sensor; 4. Temperature sensor; 5. Heat exchange box; 6. Connecting pipe; 7. Fixed box; 8. Circulating water pump; 9. Water cooling block; 10. Circulating pipe; 11. Heating pipe; 12. Air extraction pump; 13. Air inlet pipe; 14. Filter screen; 15. Connecting air pipe; 16. Annular pipe; 17. Jet pipe; 18. Pressure relief valve; 19. Scale; 20. Single-chip microcomputer. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] As shown in the Figures 1-5 drawings, a quantitative concentration sample device includes a concentration tank 1, and a sealing cover 2 is arranged on the top of the concentration tank 1;

[0026] A laser liquid level sensor 3 is fixedly installed at the bottom of the sealing cover 2, a temperature sensor 4 is fixedly installed on one side of the inner wall of the concentration tank 1, heat exchange boxes 5 are fixedly connected to both sides of the concentration tank 1, a connecting pipe 6 is fixedly connected between the two heat exchange boxes 5, a fixed box 7 is fixedly connected to the bottom of the concentration tank 1, a circulating water pump 8 is installed inside the fixed box 7, a water cooling block 9 is installed on one side of the fixed box 7 close to the circulating water pump 8, a circulating pipe 10 is fixedly connected between the heat exchange box 5, the circulating water pump 8 and the water cooling block 9, a heating pipe 11 is fixedly installed at the bottom of the inner wall of the concentration tank 1, and an eddy current concentration mechanism is arranged between the concentration tank 1 and the fixed box 7.

[0027] As shown in the Figures 1-5 accompanying drawings, the eddy current concentration mechanism includes an air extraction pump 12, the air extraction pump 12 is fixedly installed on one side of the fixed box 7, an air inlet pipe 13 is fixedly connected to the input end of the air extraction pump 12, a filter screen 14 is fixedly installed on the inner wall of the air inlet pipe 13, a connecting air pipe 15 is fixedly connected to the output end of the air inlet pipe 13, one end of the connecting air pipe 15 is fixedly communicated with an annular pipe 16, a plurality of air jet pipes 17 are fixedly installed inside the annular pipe 16, and a plurality of air jet pipes 17 all penetrate through the concentration tank 1 and extend into the interior of the concentration tank 1. By jetting air through the air jet pipes 17, an eddy current is generated, thereby improving the volatilization effect and further improving the concentration efficiency.

[0028] As shown in the Figures 1-3 accompanying drawings, a pressure relief valve 18 is fixedly installed on one side of the concentration tank 1, and a scale 19 is arranged on the outer surface of the concentration tank 1, which can avoid excessive internal pressure during sample concentration and can also observe the solution volume through the scale 19.

[0029] As shown in the Figure 1 and 2 3, 5, a single-chip microcomputer 20 is fixedly installed on the top of the fixed box 7, and the single-chip microcomputer 20 is electrically connected to the laser liquid level sensor 3, the temperature sensor 4, the circulating water pump 8 and the air extraction pump 12 respectively, which is convenient to control heating and cooling through the single-chip microcomputer 20.

[0030] As shown in the Figures 1-3 accompanying drawings, one side of the heat exchange box 5 penetrates through the concentration tank 1 and extends into the interior of the concentration tank 1. The heat exchange box 5 is made of aluminum alloy material to ensure the heat exchange effect of the heat exchange box 5, thereby ensuring the rapid cooling of the sample inside the concentration tank 1.

[0031] The working principle of the present utility model: Place the sample to be concentrated in the concentration tank 1, cover the sealing cover 2 to form a closed concentration space, prevent the sample from being polluted by the outside or the volatilized gas from leaking during the concentration process. The laser liquid level sensor 3 at the bottom of the sealing cover 2 monitors the liquid level height of the sample in the concentration tank 1 in real time. By emitting a laser beam and receiving the reflected light, the liquid level information is calculated according to the round-trip time of the laser; the temperature sensor 4 on one side of the inner wall of the concentration tank 1 detects the temperature of the sample in the tank in real time and obtains the temperature data. These two sensors transmit the monitored liquid level and temperature data to the single-chip microcomputer 20 on the top of the fixed box 7;

[0032] The heating pipe 11 at the bottom of the inner wall of the concentration tank 1 can heat the sample, promoting the volatilization of the solvent in the sample and accelerating the concentration process. The two heat exchange boxes 5, the circulation water pump 8 and the water-cooled block 9 form a cooling circulation system through the circulation pipe 10. When the solution volume approaches the target volume, the single-chip microcomputer 20 causes the circulation water pump 8 to pump out the coolant in the heat exchange box 5. After being cooled by the water-cooled block 9, it is then transported back to the heat exchange box 5. The coolant exchanges heat with the concentration tank 1 in the heat exchange box 5, taking away the excess heat generated during the concentration process, preventing the sample temperature from being too high, and preventing the volume from being less than the target value due to excessive volatilization. The heat exchange box 5 made of aluminum alloy has good heat conduction performance, can efficiently transfer heat, and one side penetrates the concentration tank 1 and extends to the inside, increasing the heat exchange area and improving the cooling effect;

[0033] The air pump 12 on one side of the fixed box 7 is started, and the outside air is extracted through the air inlet pipe 13. The filter screen 14 on the inner wall of the air inlet pipe 13 can filter the impurities in the air to prevent them from entering the concentration tank 1 and polluting the sample. The air enters the annular pipe 16 through the connecting air pipe 15, and then is sprayed into the inside of the concentration tank 1 at a certain angle through the multiple air spray pipes 17 inside the annular pipe 16, forming a vortex in the tank, accelerating the volatilization of the solvent on the surface of the sample, and improving the concentration efficiency. The working state of the air pump 12 is also controlled by the single-chip microcomputer 20 and adjusted according to information such as the liquid level and temperature. The pressure relief valve 18 on one side of the concentration tank 1 is used to control the pressure in the tank. When the pressure in the concentration tank 1 is too high, the pressure relief valve 18 automatically opens to release some gas to ensure the stability of the pressure in the tank and ensure the safe operation of the device.

[0034] Finally: The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A quantitative sample concentration device, comprising a concentration tank (1), characterized in that: The top of the concentration tank (1) is provided with a sealing cover (2); A laser liquid level sensor (3) is fixedly mounted on the bottom of the sealing cover (2); a temperature sensor (4) is fixedly mounted on one side of the inner wall of the concentrating tank (1); heat exchange boxes (5) are fixedly connected to both sides of the concentrating tank (1); a connecting pipe (6) is fixedly connected between the two heat exchange boxes (5); a fixed box (7) is fixedly connected to the bottom of the concentrating tank (1); a circulating water pump (8) is mounted inside the fixed box (7); a water cooling block (9) is mounted on one side of the fixed box (7) close to the circulating water pump (8); a circulating pipe (10) is fixedly connected between the heat exchange box (5), the circulating water pump (8) and the water cooling block (9); a heating pipe (11) is fixedly mounted on the bottom of the inner wall of the concentrating tank (1); and a vortex concentrating mechanism is provided between the concentrating tank (1) and the fixed box (7).

2. The quantitative sample concentration device according to claim 1, characterized in that: The vortex concentration mechanism comprises an air pump (12), the air pump (12) being fixedly mounted on one side of the fixed box (7), and an air intake pipe (13) being fixedly connected to an input end of the air pump (12).

3. The quantifiable sample concentration device according to claim 2, characterized in that: A filter screen (14) is fixedly mounted on the inner wall of the air intake pipe (13); an output end of the air intake pipe (13) is fixedly connected to a connecting air pipe (15); one end of the connecting air pipe (15) is fixedly connected to an annular pipe (16).

4. The quantifiable sample concentration device according to claim 3, characterized in that: A plurality of air injection pipes (17) are fixedly mounted on the inner side of the annular tube (16), and the plurality of air injection pipes (17) all penetrate the concentration tank (1) and extend into the interior of the concentration tank (1).

5. The quantifiable sample concentration device according to claim 1, characterized in that: A pressure relief valve (18) is fixedly mounted on one side of the concentration tank (1), and a scale (19) is provided on the outer surface of the concentration tank (1).

6. The quantitative sample concentration device according to claim 2, characterized in that: A single-chip microcomputer (20) is fixedly mounted on the top of the fixed box (7), and the single-chip microcomputer (20) is electrically connected to the laser liquid level sensor (3), the temperature sensor (4), the circulating water pump (8), and the air extraction pump (12).

7. The quantifiable sample concentration device according to claim 1, characterized in that: One side of the heat exchange box (5) penetrates the concentration tank (1) and extends into the interior of the concentration tank (1); the heat exchange box (5) is made of aluminum alloy.

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