PH value monitoring system

Abstract

The utility model discloses a pH value monitoring system, which comprises a supporting device, a pH value monitoring device and a pH value monitoring device, the pH test paper fixing device is connected to the track in a sliding manner; the first end of the sampling pipeline is communicated with the sample container, and the second end of the sampling pipeline faces the first surface of the pH test paper and is used for guiding a sample to the first surface of the pH test paper for color development; the color recognition device faces the second surface, far away from the sampling pipeline, of the pH test paper and is used for acquiring the color of the pH test paper after color development; the pH value determination device is in communication connection with the color identification device and is used for determining the current pH value of the sample according to the color after the color development of the pH test paper; the lifting device is connected with the pH test paper fixing device and is used for controlling the pH test paper to descend to a position close to the second end of the sampling pipeline and controlling the pH test paper to ascend to a position close to the color recognition device. According to the pH value monitoring system, remote non-contact real-time monitoring of the pH value can be realized, the detection precision and efficiency are improved, the operation safety is guaranteed, and the labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical monitoring equipment technology, and more specifically, to a pH value monitoring system. Background Technology

[0002] In existing mining operations, the backfilling mining method is generally used. This method requires the backfill slurry to have a pH value ≥ 12. Otherwise, the backfill slurry will not meet the expected strength requirements and will easily solidify, which may even cause pipe blockage accidents. To monitor the pH value of this filling slurry in real time, the existing technology uses pH test strips for manual sampling at regular intervals, typically every 2 to 4 hours. This monitoring frequency is too low, and it's highly likely that the pH value of the slurry will suddenly increase within this timeframe, making it impossible to detect and address the anomaly promptly. This method presents significant safety hazards. Furthermore, it is labor-intensive, inefficient, and requires high manual labor intensity with frequent testing. It also cannot continuously monitor real-time pH changes, and the interpretation of pH values ​​is subject to human error. In addition, differences in color interpretation among operators and improper operation can affect the consistency of results. Recording values ​​is also prone to errors and inconvenience, hindering automatic data storage and analysis. Operators are exposed to the slurry environment, requiring close contact with it, and their bodies are exposed to harmful substances, potentially causing injury – another safety hazard.

[0003] Another method is to use a pH meter for monitoring, but it is expensive. After each measurement, the thick slurry adhering to the probe needs to be cleaned to ensure sufficient measurement accuracy. In addition, it is easily damaged by the thick slurry. Overall, this method of monitoring is too costly. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a pH monitoring system that enables remote, non-contact, real-time monitoring of pH values, improving detection accuracy and efficiency, ensuring operational safety, and reducing labor costs.

[0005] This utility model provides a pH monitoring system comprising:

[0006] A support device on which a track is mounted;

[0007] pH test paper fixing device, which is slidably connected to the track, and pH test paper is fixed on it;

[0008] The sampling tube has a first end connected to the sample container and a second end facing the first side of the pH test paper, which is used to guide the sample to the first side of the pH test paper to make it develop color.

[0009] A color recognition device is positioned on the second side of the pH test strip away from the sampling tube to obtain the color of the pH test strip after color development.

[0010] The pH value determination device is communicatively connected to the color recognition device to determine the current pH value of the sample based on the color of the pH test strip after it develops color.

[0011] A lifting device, connected to the pH test paper fixing device, is used to control the pH test paper to descend to a position close to the second end of the sampling pipe, and to control the pH test paper to rise to a position close to the color recognition device.

[0012] Preferably, the pH monitoring system described above further includes:

[0013] A pH test strip switching device is installed on the support device to switch the pH test strip after color development to an unused pH test strip.

[0014] Preferably, in the above-mentioned pH monitoring system, the pH test strip switching device includes:

[0015] pH test strip container, which is mounted on the pH test strip fixing device;

[0016] A servo motor is mounted on the pH test paper fixing device and is spaced at a preset distance from the pH test paper container;

[0017] The first end of the pH test strip is attached to the shaft of the servo motor, and the second end of the pH test strip is located inside the pH test strip container. The servo motor is used to drive the pH test strip out of the pH test strip container when rotating the shaft to achieve pH test strip switching.

[0018] Preferably, in the pH monitoring system described above, the support device includes two vertically extending and spaced apart first and second support rods, and the track includes a first track unit disposed on the first support rod and a second track unit disposed on the second support rod.

[0019] Preferably, in the pH monitoring system described above, the pH test paper container is mounted on the first support rod, and the servo motor is mounted on the second support rod.

[0020] Preferably, the pH monitoring system described above further includes:

[0021] The control device is electrically connected to the color recognition device, the pH value determination device, and the lifting device. It is used to control the lifting device to lower the pH test strip to a position close to the second end of the sampling pipe, and to control the color recognition device to acquire the color of the pH test strip after color development when the lifting device raises the pH test strip to a position close to the color recognition device. It is also used to control the color recognition device to transmit the acquired color to the pH value determination device to determine the current pH value.

[0022] Preferably, in the above-mentioned pH monitoring system, the color recognition device includes:

[0023] An industrial camera is positioned facing the second side of the pH test paper away from the sampling tube.

[0024] A parallel light source is directed toward the second side of the pH test paper, away from the sampling tube.

[0025] Preferably, the pH monitoring system described above further includes:

[0026] A light-shielding container, the interior of which houses the support device, the pH test paper fixing device, the sampling pipe, the color recognition device, the pH value determining device, and the lifting device.

[0027] Preferably, in the pH monitoring system described above, the color recognition device is fixed to the inner wall of the light-shielding container.

[0028] Preferably, in the pH monitoring system described above, the sample container is a stirring device, and the first end of the sampling pipe is connected to the overflow port near the upper part of the side of the stirring device, and the second end of the sampling pipe faces the first side of the pH test paper and is located above the upper opening of the filling pump.

[0029] As can be seen from the above technical solution, the pH monitoring system provided by this utility model includes a support device, a pH test paper fixing device, a sampling pipe, a color recognition device, a pH value determination device, and a lifting device. The sampling pipe is used to guide the sample to the first side of the pH test paper to make it develop color. The color recognition device can obtain the color of the pH test paper after it develops color. The pH value can be determined based on the color of the pH test paper after it develops color. The lifting device can control the pH test paper to descend to a position close to the second end of the sampling pipe and to control the pH test paper to rise to a position close to the color recognition device. It is evident that this allows the first side of the pH test paper to contact the sample and the color to be recognized from the second side of the pH test paper without anyone being present to operate it. Subsequently, the pH value is identified based on the color and stored. These monitoring processes can be performed at shorter time intervals to facilitate timely detection of pH value abnormalities. Therefore, this enables remote, non-contact, real-time monitoring of pH values, improves the accuracy and efficiency of detection, ensures operational safety, and reduces labor costs. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 An overall diagram of an embodiment of a pH monitoring system provided by this utility model;

[0032] Figure 2 A partial view of the support device for an embodiment of a pH monitoring system provided by this utility model. Detailed Implementation

[0033] The core of this invention is to provide a pH monitoring system that enables remote, non-contact, real-time monitoring of pH values, improving detection accuracy and efficiency, ensuring operational safety, and reducing labor costs.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] An example implementation of the pH monitoring system provided by this utility model Figure 1 and Figure 2 As shown, Figure 1 This is an overall diagram of an embodiment of a pH monitoring system provided by this utility model. Figure 2 This is a partial view of a support device according to an embodiment of the pH monitoring system provided by this utility model. It should be noted that... Figure 1 It's impossible to show the view of the side of the support device where the pH test strip is installed, so... Figure 2 To illustrate this perspective, the pH monitoring system may specifically include:

[0036] Support device 1, on which a track 2 is provided. It should be noted that the support device 1 can be extended vertically, and two tracks can be set, which can be selected according to actual needs. The track 2 is parallel to the support device 1. The track 2 can be set vertically to provide a channel for vertical movement. A corresponding track 2 can be set on each support device 1.

[0037] pH test paper fixing device 3 is slidably connected to track 2, and pH test paper 4 is fixed on it. It should be noted that the main body of this pH test paper fixing device 3 for connecting with track 2 can be a slider, so that the pH test paper 4 can be moved up and down. In this embodiment, moving it down is to make the pH test paper 4 contact the sample, while moving it up is to extract the color after the pH test paper 4 is separated from the sample to determine the pH value.

[0038] The sampling tube 5 has its first end connected to the sample container 6 and its second end facing the first side of the pH test paper 4. It is used to guide the sample to the first side of the pH test paper 4 so that it can develop color. The first side of the pH test paper 4 is the side facing the sampling tube 5. It should be noted that after the sample liquid in the sample container 6 rises to the overflow port 601, it can fall down from the sampling tube 5 under the action of gravity. The free end of the sampling tube 5 can be tilted forward relative to the vertical direction, so that the sample can flow out obliquely forward. When the pH test paper moves down to the outflow position of these samples, the sample can reach the first side of the pH test paper so that the pH test paper can develop color accordingly.

[0039] The color recognition device 7 faces the second side of the pH test paper 4 away from the sampling tube 5, and is used to obtain the color of the pH test paper 4 after color development. It should be noted that the color recognition device 7 can obtain the color of the back of the pH test paper, so it will not be affected by the sample itself. Because the sample is in contact with the front of the pH test paper, the sample will not flow to the back of the pH test paper. Moreover, since the pH test paper is placed vertically, excess sample will fall off under the action of gravity, which can better avoid affecting the color acquisition.

[0040] pH value determination device 8 is communicatively connected to color recognition device 7 to determine the current pH value of the sample based on the color of the pH test strip after color development. It should be noted that color recognition device 7 can transmit the recognized color information to pH value determination device 8, and then pH value determination device 8 can automatically identify the corresponding pH value based on the obtained color. This pH value determination device can use existing technology, which will not be elaborated here.

[0041] The lifting device 9, connected to the pH test strip fixing device 3, controls the pH test strip 4 to descend to a position close to the second end of the sampling pipe 5, and also controls the pH test strip 4 to rise to a position close to the color recognition device 7. It should be noted that the lower and upper limits of the pH test strip can be preset. When a sample needs to be obtained, the lifting device 9 can continuously lower the pH test strip fixing device 3 to the lower limit, allowing the pH test strip to contact the sample. After contact, the pH test strip fixing device 3 can be continuously raised to the upper limit, allowing for color recognition. This lifting device 9 avoids the need for on-site operation by personnel, preventing contamination. Furthermore, the lifting device 9 can be configured, for example, to set the sampling time interval, such as once every two hours or once every hour. This can be selected according to actual needs. A smaller detection interval results in better monitoring and makes it easier to detect abnormal pH values ​​and take appropriate action, but the consumable cost is higher, and vice versa.

[0042] As can be seen from the above technical solution, the embodiment of the pH monitoring system provided by this utility model includes a support device, a pH test paper fixing device, a sampling pipe, a color recognition device, a pH value determination device, and a lifting device. The sampling pipe is used to guide the sample to the first side of the pH test paper to make it develop color. The color recognition device can obtain the color of the pH test paper after it develops color. The pH value can be determined based on the color of the pH test paper after it develops color. The lifting device can control the pH test paper to descend to a position close to the second end of the sampling pipe and to control the pH test paper to rise to a position close to the color recognition device. It can be seen that this allows the first side of the pH test paper to contact the sample and the color to be recognized from the second side of the pH test paper without anyone being on-site to operate. Subsequently, the pH value is identified based on the color and stored. These monitoring processes can be performed at shorter time intervals to facilitate timely detection of pH value abnormalities. It can be seen that this can realize remote, non-contact, real-time monitoring of pH value, improve the accuracy and efficiency of detection, ensure operational safety, and reduce labor costs.

[0043] In a specific embodiment of the pH monitoring system described above, refer to... Figure 2 It may also include:

[0044] A pH test strip switching device 10, mounted on the support device 1, is used to switch the developed pH test strip to an unused pH test strip. It should be noted that after testing, the developed pH test strip is no longer usable; therefore, it needs to be switched to an unused pH test strip before a new round of testing can be performed. Using this pH test strip switching device 10 eliminates the need for manual operation, allowing for automated pH test strip switching and further improving work efficiency. Furthermore, the aforementioned pH test strip switching device may specifically include:

[0045] pH test paper container 101 is set on pH test paper fixing device 3 and must remain stationary. It can hold rolls of pH test paper inside. This is a common form of pH test paper packaging. Such a roll of pH test paper can be loaded onto the pH test paper container 101 in advance for use in subsequent monitoring.

[0046] The servo motor 102 is mounted on the pH test paper fixing device 3. It itself must remain stationary, while the rotating shaft on it can drive the pH test paper to move at a preset distance from the pH test paper container 101. This preset distance must ensure that the sample can adhere to the pH test paper to form effective color development.

[0047] The first end of the pH test strip 4 is attached to the shaft of the servo motor 102, and the second end of the pH test strip 4 is located inside the pH test strip container 101. The servo motor 102 is used to drive the pH test strip 4 out of the pH test strip container 101 when rotating the shaft to achieve the switching of the pH test strip 4. In this case, after one monitoring is completed, the servo motor 102 can be automatically controlled to rotate its shaft through a certain angle. This rotation process can drive the pH test strip to move a certain distance out of the pH test strip container 101. This distance can remove the entire color development area that can contact the sample, and the position is replaced by a brand new pH test strip that comes out of the pH test strip container 101. It can be seen that this switching method is more efficient and accurate. Through the control of the servo motor, there is no waste of pH test strips, and no human operation is required, thereby further saving material costs and labor costs.

[0048] Further, continue to refer to Figure 2 The aforementioned support device 1 includes two vertically extending and spaced-apart first and second support rods, as shown in the illustration, with one first support rod on the left and one second support rod on the right. The track 2 may include a first track unit mounted on the first support rod and a second track unit mounted on the second support rod, as shown in the illustration. Figure 2As shown, there is a first track unit on the left and a second track unit on the right. This symmetrical structure ensures that various pH monitoring functions can be achieved while saving material costs. Based on this, the pH test strip container 101 can be mounted on the first support rod, and the servo motor 102 can be mounted on the second support rod, or as... Figure 2 As shown, this allows the pH test strip to be positioned between the two tracks with a sufficiently large distance, ensuring ample contact space for the sample and providing sufficient space for color recognition, thus making pH monitoring more accurate.

[0049] In another specific embodiment of the pH monitoring system described above, based on the above embodiment, a control device 11 may be further included. This control device is electrically connected to the color recognition device 7, the pH determination device 8, and the lifting device 9. The control device 11 controls the lifting device 9 to lower the pH test strip 4 to a position close to the second end of the sampling pipe 5. It also controls the color recognition device 7 to acquire the color of the pH test strip 4 after color development when the lifting device 9 raises the pH test strip 4 to a position close to the color recognition device 7. Furthermore, it controls the color recognition device 7 to transmit the acquired color to the pH determination device 8 to determine the current pH value. It should be noted that using this control device 11, the entire pH monitoring process can be automated. This includes the raising and lowering of the pH test strip, color recognition, and pH determination, all of which can be completed quickly without manual intervention. This further improves work efficiency and standardization, allowing for increased monitoring frequency based on actual needs, thereby achieving more accurate monitoring and preventing abnormal situations.

[0050] In another specific embodiment of the pH monitoring system described above, the color recognition device 7 may specifically include:

[0051] The industrial camera 701 faces the second side of the pH test paper 4 away from the sampling tube 5. That is, the sampling tube 5 and the industrial camera 701 face the two surfaces of the pH test paper 4 respectively. In this way, one side can be used to contact the sample and the other side can be used for color recognition without affecting each other, avoiding interference from the sample itself to the color recognition. This color recognition function of the industrial camera 701 is an existing technology and is not limited here.

[0052] The parallel light source 702 is directed toward the second side of the pH test paper 4 away from the sampling tube 5. This parallel light source 702 can be a ring light source, with only its periphery emitting light to illuminate the pH test paper 4 to assist in color recognition. Moreover, the center is empty, thus avoiding obstruction to the industrial camera 701.

[0053] In a preferred embodiment of the pH monitoring system described above, based on yet another specific embodiment, further reference is made. Figure 1It may also include a light-shielding container 12, which houses the support device 1, the pH test paper fixing device 3, the sampling pipe 5, the color recognition device 7, the pH value determining device 8, and the lifting device 9. In this case, all the above devices can be housed in a dark box, with all light provided by a parallel light source 702. This avoids interference from external light during color recognition, ensuring more accurate color recognition results. Furthermore, the color recognition device 7 can preferably be fixed to the inner wall of the light-shielding container 12, allowing it to be positioned to the side, directly facing the pH test paper. This ensures that the light is parallel during recognition, and that color differences in different areas are caused by the color change of the pH test paper, thus making the monitoring results more accurate.

[0054] Based on the various embodiments of the pH monitoring system described above, the sample container 6 can preferably be a stirring device, and the first end of the sampling pipe 5 is connected to the overflow port 601 near the upper part of the side of the stirring device, while the second end of the sampling pipe 5 faces the first side of the pH test paper 4 and is located above the upper opening of the filling pump 13. In this case, the slurry as the sample flows out through the sampling pipe 5 and falls into the cavity of the filling pump 13, re-entering the filling cycle. It can be seen that this monitoring process will not affect the normal filling process and will not introduce other impurities into the filling process.

[0055] The workflow of the pH monitoring system described above can be as follows:

[0056] First, two linear guide rails are vertically placed on both sides of sampling pipe 6. A pH test strip box is placed on the slider of one rail, and a servo motor is placed on the slider of the other rail. The pH test strip is attached to the shaft of the servo motor, with the front of the pH test strip facing the end of the sampling pipe. The sliders can initially be at the top of the rails. Using a PLC, the two sliders slide downwards synchronously, allowing the pH test strip to pick up the flowing slurry. It then slides upwards to the capture area of ​​the industrial camera. The color displayed on the pH test strip after picking up the slurry will then reach the back side, where there is no slurry adhesion. This prevents interference from the slurry itself during color recognition. Therefore, the industrial camera is installed on the back of the pH test strip. After the pH test strip reaches the shooting position, the PLC can send a signal to the host computer software via the ModBus protocol. The software will control the industrial camera to take a picture and call the relevant algorithm to complete the pH value detection. Finally, the servo motor rolls the pH test strip to make room for a new detection area. It should be noted that the relevant software can be set to a timed mode, repeating the above steps after a certain period of time, thereby achieving cyclical online monitoring of the slurry pH value.

[0057] In summary, the pH monitoring system provided in this application can improve detection accuracy and efficiency, is easy to operate, adopts an automatic sampling and detection method, can automatically monitor and record changes in slurry pH in real time, avoid human error, and can work 24 hours a day without interruption, reducing manual labor intensity and labor costs. It can also reduce the operator's close contact with the slurry, reduce the operator's risk of exposure to harmful substances, and thus improve the operator's personal safety.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pH monitoring system, characterized in that, include: A support device on which a track is mounted; pH test paper fixing device, which is slidably connected to the track, and pH test paper is fixed on it; The sampling tube has a first end connected to the sample container and a second end facing the first side of the pH test paper, which is used to guide the sample to the first side of the pH test paper to make it develop color. A color recognition device is positioned on the second side of the pH test strip away from the sampling tube to obtain the color of the pH test strip after color development. The pH value determination device is communicatively connected to the color recognition device to determine the current pH value of the sample based on the color of the pH test strip after it develops color. A lifting device, connected to the pH test paper fixing device, is used to control the pH test paper to descend to a position close to the second end of the sampling pipe, and to control the pH test paper to rise to a position close to the color recognition device.

2. The pH monitoring system according to claim 1, characterized in that, Also includes: A pH test strip switching device is installed on the support device to switch the pH test strip after color development to an unused pH test strip.

3. The pH monitoring system according to claim 2, characterized in that, The pH test strip switching device includes: pH test strip container, which is mounted on the pH test strip fixing device; A servo motor is mounted on the pH test paper fixing device and is spaced at a preset distance from the pH test paper container; The first end of the pH test strip is attached to the shaft of the servo motor, and the second end of the pH test strip is located inside the pH test strip container. The servo motor is used to drive the pH test strip out of the pH test strip container when rotating the shaft to achieve pH test strip switching.

4. The pH monitoring system according to claim 3, characterized in that, The support device includes two vertically extending and spaced apart first support rods and second support rods, and the track includes a first track unit disposed on the first support rod and a second track unit disposed on the second support rod.

5. The pH monitoring system according to claim 4, characterized in that, The pH test strip container is mounted on the first support rod, and the servo motor is mounted on the second support rod.

6. The pH monitoring system according to claim 1, characterized in that, Also includes: The control device is electrically connected to the color recognition device, the pH value determination device, and the lifting device. It is used to control the lifting device to lower the pH test strip to a position close to the second end of the sampling pipe, and to control the color recognition device to acquire the color of the pH test strip after color development when the lifting device raises the pH test strip to a position close to the color recognition device. It is also used to control the color recognition device to transmit the acquired color to the pH value determination device to determine the current pH value.

7. The pH monitoring system according to claim 1, characterized in that, The color recognition device includes: An industrial camera is positioned facing the second side of the pH test paper away from the sampling tube. A parallel light source is directed toward the second side of the pH test paper, away from the sampling tube.

8. The pH monitoring system according to claim 7, characterized in that, Also includes: A light-shielding container, the interior of which houses the support device, the pH test paper fixing device, the sampling pipe, the color recognition device, the pH value determining device, and the lifting device.

9. The pH monitoring system according to claim 8, characterized in that, The color recognition device is fixed to the inner wall of the light-shielding container.

10. The pH monitoring system according to any one of claims 1-9, characterized in that, The sample container is a stirring device, and the first end of the sampling pipe is connected to the overflow port near the top of the side of the stirring device. The second end of the sampling pipe faces the first side of the pH test paper and is located above the upper opening of the filling pump.

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