Water sample regulating device for water quality on-line monitor

Abstract

A water sample control device for an online water quality monitoring instrument includes a control box, several partitions, and a temperature control device. One side of the control box is connected to an inlet pipe, and the bottom is connected to several outlet pipes. Water samples are introduced into the control box through the inlet pipes and then discharged to the monitoring instrument through the outlet pipes for testing. Several partitions are vertically installed inside the control box, with their side edges fitting against the inner wall of the control box. A lifting device is provided at the top of each partition, driving the partition to slide vertically. The connection between the outlet pipes and the control box is located between adjacent partitions. The temperature control device is located inside the control box to regulate the temperature of the water sample. This device solves the problem of inconsistent test results for the same batch of water samples due to intervals in multiple sampling times.

Description

Technical Field

[0001] This utility model relates to the field of water quality monitoring technology, and more specifically, to a water sample control device for an online water quality monitoring instrument. Background Technology

[0002] In water quality testing, it is often necessary to test multiple indicators on the same batch of water samples. In existing technologies, samplers are usually used to take samples multiple times and test them separately. However, due to the interval between sampling times, the distribution of volatile components, sediments, or microbial activity in the water sample may lead to differences in composition between samplings, affecting the accuracy of the test results. Uneven distribution of components in the water sample also results in poor consistency between groups of water samples, leading to a decrease in the accuracy of the test results. Utility Model Content

[0003] The purpose of this invention is to provide a water sample control device for an online water quality monitoring instrument, which solves the problem that the interval between multiple sampling times affects the consistency of the test results of the same batch of water samples.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] Water sample control devices for online water quality monitoring instruments include:

[0006] The control box has an inlet tube connected to one side and several outlet tubes connected to the bottom. Water samples are fed into the control box through the inlet tube and then discharged through the outlet tubes to the monitoring instrument for detection.

[0007] Several partitions are vertically installed inside the control box, with their side edges fitting against the inner wall of the control box; a lifting device is provided at the top of each partition, which drives the partition to slide vertically; the connection between the sample outlet tube and the control box is located between adjacent partitions or between a partition and the side wall of the control box.

[0008] The temperature control device is located inside the control box to regulate the temperature of the water sample.

[0009] Several of the aforementioned partitions are arranged in parallel at equal intervals.

[0010] The sidewalls and bottom of the control box that are in contact with the partition are provided with sealing grooves corresponding to the partition; the two sides of the partition are slidably disposed in the sealing grooves; when the partition slides to the bottom of the inner side of the control box, the bottom of the partition is embedded in the sealing groove.

[0011] The partition has a sealing strip on its side edge; when the side edge of the partition is slidably disposed in the sealing groove, the sealing strip is embedded in the sealing groove.

[0012] The tops of several of the partitions are respectively connected to a connecting plate; the connecting plate is connected to a lifting device.

[0013] The lifting device is a first telescopic rod, with its fixed end located on the top of the control box and its movable end connected to the connecting plate; the first telescopic rod controls the connecting plate to move up and down through telescopic control, thereby driving several partitions to move up and down synchronously.

[0014] The temperature control device is located at the bottom of the control box and includes several heat-conducting pipes and a heater. One end of the heat-conducting pipe passes through the bottom of the control box and is located between adjacent partitions or between a partition and the side wall of the control box. The other end of the heat-conducting pipe is in contact with the heater. The heater is located at the bottom of the control box and heats the heat-conducting pipe in contact with the heater, so that heat is transferred to the water sample inside the control box through the heat-conducting pipe.

[0015] It also includes a temperature sensor, located inside the control box, which comes into contact with the water sample.

[0016] It also includes a stirring device, located inside the control box, with one end placed in the water sample to create a water flow.

[0017] The stirring device includes a second telescopic rod and an impeller driven by a motor; the fixed end of the second telescopic rod is located at the top of the control box; the impeller is located at the bottom of the movable end of the second telescopic rod, and the rotation axis of the impeller is parallel to the bottom surface of the control box.

[0018] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0019] 1. The water sample control device for an online water quality monitoring instrument of this utility model introduces the water sample to be tested into the control box. The same batch of water samples in the control box is simultaneously divided into multiple groups by a liftable partition. When testing is required, the multiple groups of equally divided water samples can be discharged into the monitoring instrument through the sample outlet tube for testing, eliminating the time difference of multiple sampling, reducing the difference in water sample composition when sampling at different times, and improving the accuracy of the test results.

[0020] 2. The water sample control device for an online water quality monitoring instrument of this utility model, through the cooperation of a temperature control device and a temperature sensor, can uniformly control the water sample temperature, eliminate the interference of temperature differences on the detection, and ensure consistent detection conditions; and through a stirring device, it promotes the flow of water sample, actively disturbs the water flow, accelerates heat diffusion, avoids local overheating, makes the temperature distribution more uniform, and at the same time makes the water sample components mix more evenly, ensuring the consistency of each group of water samples after separation by the partition. Attached Figure Description

[0021] Figure 1 This is a front view diagram of the present invention;

[0022] Figure 2 It is attached Figure 1 Sectional view at point aa;

[0023] Figure 3It is attached Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a rear view of the present invention;

[0025] Figure 5 It is attached Figure 4 Enlarged view of section B in the middle.

[0026] In the diagram, 1-control box, 101-sample inlet tube, 102-sample outlet tube, 103-sealing groove, 201-first telescopic rod, 202-connecting plate, 203-partition plate, 301-second telescopic rod, 302-mounting plate, 303-support plate, 304-motor, 305-synchronous pulley, 306-synchronous belt, 307-impeller, 401-heat pipe, 402-heat plate, 403-heater, 404-heat dissipation fins, 405-fan. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] like Figure 1 and 2 As shown, the water sample control device for the online water quality monitoring instrument includes a control box 1, several partitions 203, a temperature control device and a temperature sensor; the control box 1 is the main load-bearing structure of the device, and its material is preferably made of corrosion-resistant and high-strength material (such as stainless steel), forming a closed water sample temporary storage and control space inside.

[0030] A sample inlet pipe 101 is connected to the rear side wall of the control box 1; one end of the sample inlet pipe 101 is connected to the sample supply end, which is used to provide water sample, so that the water sample to be tested is continuously or in batches introduced into the control box 1 through the sample inlet pipe 101; the diameter of the sample inlet pipe 101 can be set according to the water sample flow rate requirements to ensure that the water sample enters stably, and a control valve is provided to control the passage of the water sample;

[0031] The bottom of the control box 1 is connected to several sample outlet tubes 102, the number of which matches the number of subsequent testing items; the end of the sample outlet tube 102 away from the control box 1 is connected to the monitoring instrument, and the water sample in the control box 1 is discharged to the monitoring instrument for testing through the sample outlet tube 102.

[0032] Several partitions 203 are vertically arranged inside the control box 1, with their side edges fitting against the inner wall of the control box 1; the top of each partition 203 is provided with a lifting device, which drives the partition 203 to slide vertically.

[0033] The connection between the sample outlet tube 102 and the control box 1 is located between adjacent partitions 203 or between partitions 203 and the side wall of the control box 1; the partitions 203 slide so that their bottom edge fits against the bottom of the control box 1, dividing the water sample into multiple groups, and then allowing the multiple groups of water samples to be discharged through the corresponding sample outlet tubes 102 to the monitoring instrument for detection.

[0034] Both the temperature control device and the temperature sensor are located inside the control box 1. The temperature control device regulates the temperature of the water sample, and the temperature sensor monitors the temperature of the water sample in real time. The two are used together to achieve stable control of the water sample temperature and eliminate the interference of temperature difference on the detection. It should be noted that the temperature sensor is not shown in the figure and is existing technology. The preferred sensor is the DS18B20 digital temperature sensor.

[0035] Specifically, several partitions 203 are arranged in parallel at equal intervals, and the distance between adjacent partitions 203 and the distance between partitions 203 and the side wall of control box 1 are equal, ensuring that the quality of multiple groups of water samples separated by partitions 203 is equal, and ensuring the consistency of samples when different tests are performed subsequently.

[0036] like Figure 2 As shown, in one embodiment, to prevent interaction between multiple groups of water samples after they are separated by partitions 203, sealing grooves 103 are provided on the side walls and bottom of the control box 1 at corresponding positions on both sides and bottom of partitions 203. The side edges of partitions 203 are slidably disposed in the sealing grooves 103. Sealing strips are also provided on the side edges of partitions 203. When partitions 203 slide to the bottom of the inner side of control box 1, the bottom of partitions 203 is embedded in the sealing grooves 103, and the sealing strips are simultaneously embedded in the sealing grooves 103, forming a multi-seal structure. The core function of this sealing structure is to prevent water samples from adjacent areas from mixing. During the water sample separation stage, the cooperation between the sealing grooves 103 and the sealing strips can block the flow of water samples in the gaps between partitions 203 and the box wall, ensuring that each group of water samples is strictly independent. When partitions 203 are raised, the sealing grooves 103 provide a stable sliding track for partitions 203, avoiding sealing failure caused by the shaking of partitions 203.

[0037] like Figure 2As shown, the lifting device is used to drive the partition 203 to slide vertically. In one embodiment, the lifting device includes a connecting plate 202 and a first telescopic rod 201. The connecting plate 202 is placed horizontally, and the tops of several partitions 203 are respectively fixedly connected to the bottom of the same connecting plate 202. The top of the connecting plate 202 is connected to the movable end of the first telescopic rod 201, and the fixed end of the first telescopic rod 201 is installed on the top of the control box 1.

[0038] When water samples need to be separated, the first telescopic rod 201 extends, causing the connecting plate 202 to move downwards, which in turn drives all the partitions 203 to descend vertically synchronously until the bottom of the partitions 203 is embedded in the sealing groove 103, thus completing the uniform separation of the water samples in the control box 1. When the test is completed or when water samples need to be reintroduced, the first telescopic rod 201 retracts, causing the connecting plate 202 and the partitions 203 to rise synchronously. The bottom of the partitions 203 disengages from the sealing groove 103 and moves along the sealing grooves 103 on both sides, restoring the connection state in the control box 1, which facilitates the discharge of water samples or the introduction of new water samples. The synchronous lifting and lowering design ensures that the separation time of each area is consistent, avoiding water sample mixing or uneven separation caused by asynchronous lifting and lowering of the partitions 203.

[0039] like Figure 4 and 5 As shown, temperature changes affect the ionization balance of water, leading to changes in hydrogen ion concentration and affecting the pH value of the water sample. Increased temperature accelerates ion movement, resulting in increased conductivity. Therefore, it is necessary to control the temperature of the water sample to avoid affecting the detection results. In one embodiment, the temperature control device is located at the bottom of the control box 1 and consists of several heat pipes 401, a heater 403, and a heat dissipation device. The heat pipes 401 are made of a high thermal conductivity material (such as copper), with one end passing through the bottom of the control box 1 and extending to the area between adjacent partitions 203 or between the partitions 203 and the side wall of the control box 1. The other end connects to the heater 403 located at the bottom of the control box 1 and the heat dissipation device. The device is in contact with the water sample; the temperature sensor is installed inside the control box 1 and is in direct contact with the water sample to monitor the water temperature in real time; the heater 403, the heat dissipation device and the temperature sensor are connected to the controller through a circuit. Adjusting the water temperature through the controller is a common technique used by those skilled in the art, maintaining the water sample temperature stable at 20℃; it should be noted that the controller is preferably an STC8 microcontroller, electrically connected to the heater 403, the heat dissipation device and the temperature sensor. The temperature sensor provides real-time feedback of the water sample temperature, and the controller receives the signal and controls the start and stop of the heater 403 and the heat dissipation device according to preset conditions, thereby achieving the purpose of real-time detection and adjustment of the water sample temperature;

[0040] Specifically, the heat pipe 401 is S-shaped inside the control box 1 to increase the contact area between the heat pipe 401 and the water sample. The increased contact area results in more heat conduction paths between the heat pipe 401 and the water sample, allowing heat to diffuse into the water sample more quickly and evenly, reducing local overheating, making the water temperature rise more evenly, and shortening the overall heating time. Furthermore, the increased contact area also enhances the heat dissipation effect of the heat pipe 401 on the water sample.

[0041] Specifically, multiple heat pipes 401 extend away from the control box 1 and are arranged side by side, with heat-conducting plates 402 attached to both sides to disperse and transfer heat.

[0042] The heating end of the heater 403 is in contact with the heat-conducting plate 402 on one side. The heater 403 disperses the heat by heating the heat-conducting plate 402, and then transfers the heat to the water sample along the heat-conducting pipe 401 to achieve uniform heat distribution.

[0043] The heat dissipation device includes heat dissipation fins 404 and a fan 405; the heat dissipation fins 404 are in contact with the heat-conducting plate 402 on the other side; the heat-conducting pipe 401 guides the heat in the water sample to the heat dissipation fins 404 through the heat-conducting plate 402; the fan 405 is mounted on one side of the heat dissipation fins 404 to accelerate the airflow on the surface of the heat dissipation fins 404 and carry away the heat on the heat dissipation fins 404 for heat dissipation; since the target temperature of the water sample is only 20°C when it is heated, the heat dissipation fins 404 will disperse some heat when the heater 403 heats the heat-conducting plate 402, but the impact on heat transfer is small and the water sample can still be heated.

[0044] Specifically, heat pipe 401 is preferably a heat pipe, which improves its heat transfer efficiency by utilizing the evaporation and condensation of the working fluid inside it. It should be noted that using heat pipes for heat transfer is a common technique used by those skilled in the art, and the structure of the heat pipe is also a publicly available structure, which will not be described in detail here.

[0045] When the temperature sensor detects that the water sample temperature is lower than the required standard for testing, the heater 403 starts and transfers heat to the water samples in each area through the heat pipe 401. The heater 403 first transfers heat to the heat-conducting plate 402, which disperses the heat, and then transfers the heat to the water sample in the control box 1 through the heat pipe 401. The heat is dispersed by multiple heat pipes 401, reducing local overheating and making the temperature distribution more uniform. The temperature sensor provides real-time feedback on the water temperature. When the water sample reaches the set temperature, the controller controls the heater 403 to stop working, achieving precise water temperature control. This structure solves the problem of different temperatures affecting the water sample test results, ensuring that multiple sets of water samples can be tested under the same temperature conditions.

[0046] Further steps are needed to further disperse the heat in the water sample, avoid local overheating, and ensure that the water sample components are mixed more evenly.

[0047] like Figure 3 As shown, in one embodiment, the control box 1 is also equipped with a stirring device that comes into contact with the water sample, promotes the flow of the water sample, actively disturbs the water flow, accelerates heat diffusion, and makes the water sample components more uniformly mixed. The stirring device includes a second telescopic rod 301, a driver, and an impeller 307. The fixed end of the second telescopic rod 301 is located at the top of the control box 1, and the impeller 307 is rotatably installed at the bottom of the movable end. The impeller 307 is driven to rotate by the driver. When stirring is required, the second telescopic rod 301 extends, so that the impeller 307 is immersed in the water sample. The driver is activated to drive the impeller 307 to rotate, disturbing the water flow and achieving the effect of mixing and dispersing heat.

[0048] Specifically, the bottom of the movable end of the second telescopic rod 301 is provided with a mounting plate 302 for providing a mounting and fixing position for other structures; the drive includes a motor 304, a synchronous pulley 305, and a synchronous belt 306; the motor 304 is located at the bottom of the mounting plate 302, and a support plate 303 is vertically located next to the motor 304. An impeller 307 is rotatably located on one side of the lower end of the support plate 303. Through the extension of the support plate 303, when the impeller 307 is inserted into the water sample, the water sample will not submerge the drive, ensuring the normal operation of the device; synchronous pulleys 305 are rotatably located at the upper and lower ends of one side of the support plate 303, and the upper synchronous pulley 305 is connected to the motor 304. The drive shaft of 04 is connected, and the lower synchronous wheel 305 is connected to the shaft of the impeller 307. The synchronous belt 306 is wrapped around the synchronous wheels 305 at both ends to transmit power. When the motor 304 drives the drive shaft to rotate, the upper synchronous wheel 305 rotates, and the lower synchronous wheel 305 rotates through the synchronous belt 306, which in turn drives the impeller 307 to rotate, thus achieving the effect of disturbing the water flow. Since the water sample flows down and may splash when the sample inlet tube 101 is filled, it may contaminate the stirring device. Therefore, when the second telescopic rod 301 retracts the stirring device, the height of the stirring device is higher than the connection between the sample inlet tube 101 and the rear side wall of the control box 1.

[0049] More specifically, there are two sets of stirring devices, which are respectively set in the control box 1, near the two pairs of side walls. The impellers 307 of the two sets of stirring devices drive the water flow in opposite directions and flow along the side walls, so that the water sample can rotate and flow in the control box 1, which improves the mixing and heat dissipation effect.

[0050] When the temperature control device is working, the rotation of the impeller 307 can drive the water sample to flow, avoiding the situation where the water temperature around the heat pipe 401 is too high while the temperature in other areas is insufficient, so that the heat is evenly distributed. Furthermore, after the water sample is introduced and before the partition 203 separates, the stirring of the impeller 307 can make the components in the water sample (such as pollutants, dissolved substances, etc.) more evenly distributed, ensuring the consistency of the composition of the water sample in each area after the partition 203 separates. The second telescopic rod 301 can adjust the immersion depth of the impeller 307 by extending and retracting to adapt to the stirring needs of different water volumes. When the partition 203 separates, the second telescopic rod 301 retracts to make the impeller 307 detach from the water sample, so as not to affect the amount of water sample in each area after the partition 203 separates.

[0051] The working principle of this embodiment is as follows:

[0052] This utility model discloses a water sample control device for an online water quality monitoring instrument. The water sample to be tested enters the control box 1 through the sample inlet pipe 101. At this time, the partition 203 is in the raised state, and the control box 1 is a connected space. The second telescopic rod 301 extends, immersing the impeller 307 in the water sample. The motor 304 drives the impeller 307 to rotate, stirring the water sample until its composition is uniform. Simultaneously, temperature control is performed. The temperature sensor monitors the temperature in real time. When the temperature is low, the heater 403 heats the water sample through the heat pipe 401; when the temperature is high, the heat dissipation device cools the water sample through the heat pipe 401. Meanwhile, the impeller... The impeller 307 rotates continuously to distribute heat evenly, ensuring uniform temperature and composition distribution in all parts of the water sample until the water temperature reaches the set value. The second telescopic rod 301 retracts to lift the impeller 307, while the first telescopic rod 201 extends. Multiple baffles 203 descend simultaneously and seal the sealing groove 103, dividing the water sample into multiple independent areas. Each group of water samples is transported to different testing instruments through the corresponding sample outlet pipe 102, enabling simultaneous testing of multiple indicators in the same batch of water samples. After testing, the baffles 203 rise, and the water sample is discharged through the sample outlet pipe 102, awaiting the next batch of water samples for testing.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water sample control device for an online water quality monitoring instrument, characterized in that, include: The control box has an inlet tube connected to one side and several outlet tubes connected to the bottom. The water sample is fed into the control box through the inlet tube, and then discharged through the outlet tube to the monitoring instrument for testing; Several partitions are vertically installed inside the control box, with their side edges fitting against the inner wall of the control box; a lifting device is provided at the top of each partition, which drives the partition to slide vertically; the connection between the sample outlet tube and the control box is located between adjacent partitions or between a partition and the side wall of the control box. The temperature control device is located inside the control box to regulate the temperature of the water sample.

2. The water sample control device for an online water quality monitoring instrument according to claim 1, characterized in that, Several of the aforementioned partitions are arranged in parallel at equal intervals.

3. The water sample control device for an online water quality monitoring instrument according to claim 2, characterized in that, The sidewalls and bottom of the control box that are in contact with the partition are provided with sealing grooves corresponding to the partition; the two sides of the partition are slidably disposed in the sealing grooves; when the partition slides to the bottom of the inner side of the control box, the bottom of the partition is embedded in the sealing groove.

4. The water sample control device for an online water quality monitoring instrument according to claim 2, characterized in that, The partition has a sealing strip on its side edge; when the side edge of the partition is slidably disposed in the sealing groove, the sealing strip is embedded in the sealing groove.

5. The water sample control device for an online water quality monitoring instrument according to claim 3, characterized in that, The tops of several of the partitions are respectively connected to a connecting plate; the connecting plate is connected to a lifting device.

6. The water sample control device for an online water quality monitoring instrument according to claim 4, characterized in that, The lifting device is a first telescopic rod, with its fixed end located on the top of the control box and its movable end connected to the connecting plate; the first telescopic rod controls the connecting plate to move up and down through telescopic control, thereby driving several partitions to move up and down synchronously.

7. The water sample control device for an online water quality monitoring instrument according to claim 1, characterized in that, The temperature control device is located at the bottom of the control box and includes several heat-conducting pipes and a heater; one end of the heat-conducting pipe passes through the bottom of the control box and is located between adjacent partitions or between a partition and the side wall of the control box; the other end of the heat-conducting pipe is in contact with the heater; The heater is located at the bottom of the control box and heats the heat-conducting pipe in contact with the heater, so that the heat is transferred to the water sample inside the control box through the heat-conducting pipe.

8. The water sample control device for an online water quality monitoring instrument according to claim 7, characterized in that, It also includes a temperature sensor, located inside the control box, which comes into contact with the water sample.

9. The water sample control device for an online water quality monitoring instrument according to claim 1, characterized in that, It also includes a stirring device, located inside the control box, with one end placed in the water sample to create a water flow.

10. The water sample control device for an online water quality monitoring instrument according to claim 9, characterized in that, The stirring device includes a second telescopic rod and an impeller driven by a motor; the fixed end of the second telescopic rod is located at the top of the control box; the impeller is located at the bottom of the movable end of the second telescopic rod, and the rotation axis of the impeller is parallel to the bottom surface of the control box.

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