A pH value monitoring device
By installing PH sensors at different locations in the solution container and combining automatic adjustment pipelines and controllers, the problem of inaccurate solution pH value detection in the prior art is solved, and the accurate detection and adjustment of the solution pH value is achieved.
Patent Information
- Application Number
- CN202421513511.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the production and manufacturing industry, it is difficult for existing pH detection technologies to accurately monitor the pH value of the solution, especially in washing tanks. Due to the difference in neutralization reaction speed, the difference in pH values of the upper and lower layers will affect the accuracy of the neutralization acid addition amount.
A PH value monitoring device is designed, including PH sensors at the bottom, middle and upper part of the container. By adjusting the flowmeter and regulating valve in the pipeline, combined with the automatic adjustment function of the controller, the precise detection and adjustment of the solution pH value is achieved.
Through the multi-point pH detection and automatic adjustment function, the detection accuracy and adjustment accuracy of the solution pH value are improved, ensuring that the solution pH value is within the specified range, and reducing the deviation of the neutralizing acid added amount.
Smart Images
Figure CN222719822U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensor detection, in particular to a pH value monitoring device. Background Art
[0002] In the manufacturing industry, there is a situation where the pH value of the solution is tested, and there is currently a situation where the pH value is not accurately tested. For example, in the production process of the CMC (Carboxymethyl Cellulose) workshop, the washing tank will show that the material is alkaline, but according to process control, the pH value generally needs to be controlled within the neutral range. At present, in the production process, a pH meter is used to measure at the bottom of the washing tank. Since hydrochloric acid is added from the top and neutralized by high-speed stirring, and since the material is a slurry, the neutralization reaction at the bottom of the washing tank is slightly slower than that at the top, resulting in a pH difference between the upper and lower layers of the washing tank, which can easily cause the amount of neutralizing acid added to be too high, or too low, or fail to accurately feedback the actual pH situation, which is not conducive to accurately monitoring and managing the pH value of the solution. Utility Model Content
[0003] In view of this, an object of the embodiments of the present application is to provide a pH value monitoring device that can improve the problem of not being able to accurately monitor and manage the pH value of a solution.
[0004] In order to achieve the above technical objectives, the technical solutions adopted in this application are as follows:
[0005] The present application provides a pH value monitoring device, the device comprising:
[0006] M pH sensors, wherein M is an integer greater than or equal to 3, at least one pH sensor is connected to the bottom of the container through a connecting pipe, and is used to detect the pH value of the solution at the bottom of the container, and the connecting pipe is provided with a first switch valve; at least one pH sensor is provided in the middle of the container, and is used to detect the pH value of the solution in the middle of the container; at least one pH sensor is provided in the upper part of the container, and is used to detect the pH value of the solution in the upper part of the container;
[0007] A regulating pipeline for regulating the pH value of the solution contained in the container, wherein the regulating pipeline includes a regulating pipeline and a first flow meter and a first regulating valve arranged on the regulating pipeline.
[0008] In some optional embodiments, the regulating pipeline also includes a first cut-off valve arranged on the regulating pipeline near one end of the container, the first flow meter is located on the end of the regulating pipeline away from the container, and the first regulating valve is located between the first flow meter and the first cut-off valve.
[0009] In some optional embodiments, the device further includes a controller, and the controller is electrically connected to the M pH sensors, the first flow meter, the first regulating valve, and the first shut-off valve.
[0010] In some optional embodiments, the controller is used to control the first regulating valve and the first shut-off valve to close when receiving the electrical signals output by the M pH sensors indicating that the pH value is within a specified range.
[0011] In some optional embodiments, the device further includes an alarm prompting unit electrically connected to the controller.
[0012] In some optional embodiments, the device also includes a liquid level measuring pipeline, which includes a measuring pipeline and a liquid level gauge arranged on the measuring pipeline, one end of the measuring pipeline is connected to the upper part of the container, and the other end of the measuring pipeline is connected to the bottom of the container, a second switch valve is provided at one end of the measuring pipeline, and a third switch valve is provided at the other end of the measuring pipeline, and the liquid level gauge is located between the second switch valve and the third switch valve on the measuring pipeline.
[0013] In some optional embodiments, the device further comprises a first delivery pipeline for delivering the first raw material to the container and a second delivery pipeline for delivering the second raw material to the container;
[0014] The first delivery pipeline includes a first delivery pipeline and a second flowmeter and a second regulating valve arranged on the first delivery pipeline; the second delivery pipeline includes a second delivery pipeline and a third flowmeter and a third regulating valve arranged on the second delivery pipeline.
[0015] In some optional embodiments, the device further comprises a third delivery pipeline for delivering a third raw material to the container, wherein the third delivery pipeline comprises a third delivery pipe and a second shut-off valve disposed on the third delivery pipe.
[0016] In some optional embodiments, the device further comprises a temperature sensor for detecting the temperature of the solution in the container.
[0017] In some optional embodiments, the device further comprises a stirrer disposed on the container and a third shut-off valve disposed on the drainage channel at the bottom of the container.
[0018] The utility model adopting the above technical solution has the following advantages:
[0019] In the technical solution provided by the present application, pH sensors are arranged at the bottom, middle and upper part of the container, which is conducive to improving the accuracy of detecting the pH value of the solution in the container. In addition, the first flow meter and the first regulating valve on the regulating pipeline can adjust the pH value of the solution in combination with the detected pH value, which is conducive to manually or automatically adjusting the pH value of the solution accurately. The first switch valve arranged on the connecting pipeline at the bottom of the container is conducive to disassembly and replacement of the corresponding pH sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present application may be further described by the non-limiting embodiments given in the accompanying drawings. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings may be obtained based on these drawings without creative effort.
[0021] Figure 1 This is one of the structural schematic diagrams of the pH value monitoring device provided in an embodiment of the present application.
[0022] Figure 2 This is a second structural schematic diagram of the pH value monitoring device provided in an embodiment of the present application.
[0023] Icons: 100-PH value monitoring device; 111-PH sensor; 112-PH sensor; 113-PH sensor; 114-first switch valve; 121-first flow meter; 122-first regulating valve; 123-first cut-off valve; 141-liquid level meter; 142-second switch valve; 143-third switch valve; 151-second flow meter; 152-second regulating valve; 161-third flow meter; 162-third regulating valve; 171-second cut-off valve; 172-third cut-off valve; 173-temperature sensor; 174-mixer; 200-container. DETAILED DESCRIPTION
[0024] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0025] Please refer to Figure 1 The embodiment of the present application provides a pH value monitoring device 100, which may include M pH sensors and a regulating pipeline for adjusting the pH value of the solution contained in the container 200. M is an integer greater than or equal to 3 and can be flexibly set according to actual conditions.
[0026] Among the M pH sensors, at least one pH sensor is connected to the bottom of the container 200 through a connecting pipe, and is used to detect the pH value of the solution at the bottom of the container 200. A first switch valve 114 is provided on the connecting pipe; at least one pH sensor is provided in the middle of the container 200, and is used to detect the pH value of the solution in the middle of the container 200; at least one pH sensor is provided in the upper part of the container 200, and is used to detect the pH value of the solution in the upper part of the container 200.
[0027] As an example, please refer again to Figure 1 , when M is 3, the pH sensor 113 is connected to the bottom of the container 200 through the connecting pipe, wherein the first switch valve 114 provided in the connecting pipe is usually in an open state, and when the pH sensor 113 needs to be replaced, the first switch valve 114 is closed. That is, the first switch valve 114 can facilitate the replacement of the pH sensor 113. The pH sensor 112 is connected to the middle of the container 200 through the connecting pipe; the pH sensor 111 is connected to the upper part of the container 200 through the connecting pipe.
[0028] It should be noted that corresponding switch valves may also be provided on the connecting pipes corresponding to the pH sensor 112 and the pH sensor 111 to facilitate replacement of the pH sensor.
[0029] The regulating pipeline includes a regulating pipeline and a first flowmeter 121 and a first regulating valve 122 arranged on the regulating pipeline. The first flowmeter 121 can be used to record the volume / flow of the pH regulating liquid delivered to the container 200. The first regulating valve 122 can be a small flow regulating valve, that is, the unit flow output by the first regulating valve 122 is small, which is conducive to accurately controlling the delivery of the pH regulating liquid, improving the adjustment accuracy of the pH value, and avoiding the unit flow being too large to finely control the switch of the pH regulating liquid. Among them, the pH regulating liquid can be flexibly selected according to actual conditions, and can be an acidic solution (such as a hydrochloric acid solution), an alkaline solution (such as a sodium hydroxide solution), etc.
[0030] Please refer to Figure 2 In this embodiment, the regulating pipeline may further include a first shut-off valve 123 disposed on the regulating pipeline at one end close to the container 200, the first flowmeter 121 is located at one end of the regulating pipeline away from the container 200, and the first regulating valve 122 is located between the first flowmeter 121 and the first shut-off valve 123. The first shut-off valve 123 can improve the reliability of the switch control of the pH regulating liquid. For example, when the first regulating valve 122 fails and cannot completely shut off the pH regulating liquid, the first shut-off valve 123 can be closed, and the first regulating valve 122 and the first shut-off valve 123 can serve as a double insurance for the switch.
[0031] In this embodiment, the pH value monitoring device 100 may further include a controller, which is electrically connected to the M pH sensors, the first flow meter 121, the first regulating valve 122 and the first shut-off valve 123. The controller may be a single chip microcomputer or other processor, which may be flexibly selected according to actual conditions.
[0032] The controller is used to control the first regulating valve 122 and the first shut-off valve 123 to close when receiving the electrical signals output by the M pH sensors indicating that the pH value is within a specified range.
[0033] The controller can obtain the pH value represented by the electrical signal collected by M pH sensors, and then average the pH values collected by each pH sensor, or perform weighted average, and the obtained average value or weighted average value is used as the measured value of the pH of the solution. The controller can determine whether the measured value is within the specified range. If the measured value is not within the specified range, the first regulating valve 122 and the first shut-off valve 123 are controlled to be opened to deliver the pH regulating liquid to the container 200, and then adjust the pH of the solution until the measured value of the pH of the adjusted solution is within the specified range. For example, if it is necessary to ensure that the pH value of the solution in the container 200 is neutral, for example, the specified range can be 6.5-7.5, if the measured value is 6.5-7.5, it is considered that the pH value of the solution meets the requirements and is neutral. Among them, the weighted average calculation method is a conventional method, which will not be repeated here.
[0034] In this embodiment, the pH value monitoring device 100 may further include an alarm prompt unit electrically connected to the controller. The alarm prompt unit may be used to issue a sound prompt and / or a light prompt when the measured value of the solution pH is not within a specified range. The alarm prompt unit may include, but is not limited to, a prompt light, a buzzer, etc.
[0035] Please refer again Figure 2 In this embodiment, the pH value monitoring device 100 may further include a liquid level measuring pipeline. The liquid level measuring pipeline includes a measuring pipeline and a liquid level meter 141 disposed on the measuring pipeline. One end of the measuring pipeline is connected to the upper part of the container 200, and the other end of the measuring pipeline is connected to the bottom of the container 200. A second switch valve 142 is disposed at one end of the measuring pipeline, and a third switch valve 143143 is disposed at the other end of the measuring pipeline. The liquid level meter 141 is located between the second switch valve 142 and the third switch valve 143143 on the measuring pipeline.
[0036] Normally, the second switch valve 142 and the third switch valve 143143 are in an open state. When the liquid level meter 141 needs to be replaced or maintained, the second switch valve 142 and the third switch valve 143143 are both closed, so that the liquid level meter 141 can be easily removed for replacement or maintenance. That is, the second switch valve 142 and the third switch valve 143143 are mainly used to facilitate replacement or maintenance of the liquid level meter 141 when there is a solution in the container 200.
[0037] The liquid level meter 141 may be a differential pressure liquid level meter, which may be used to detect the volume of the solution in the container 200. For example, when it is detected that the volume of the solution in the container 200 exceeds 80% (or other set values) of the total volume of the container 200, the solution will flood all the pH sensors, and the controller will then obtain the data collected by all the pH sensors.
[0038] In this embodiment, the pH value monitoring device 100 may further include a first delivery pipeline for delivering the first raw material to the container 200 and a second delivery pipeline for delivering the second raw material to the container 200 .
[0039] Please refer again Figure 2 The first delivery pipeline includes a first delivery pipeline and a second flow meter and a second regulating valve 152 arranged on the first delivery pipeline. The second delivery pipeline includes a second delivery pipeline and a third flow meter 161 and a third regulating valve 162 arranged on the second delivery pipeline.
[0040] Please refer again Figure 2 In this embodiment, the device also includes a third delivery pipeline for delivering the third raw material to the container 200. The third delivery pipeline includes a third delivery pipeline and a second shut-off valve 171 arranged on the third delivery pipeline. The second shut-off valve 171 is used to control the opening or closing of the delivery of the third raw material.
[0041] The functions of the second flowmeter and the third flowmeter 161 are the same as or similar to those of the first flowmeter 121, and can be used to measure the flow of corresponding raw materials.
[0042] The functions of the second regulating valve 152 and the third regulating valve 162 are the same as or similar to those of the first regulating valve 122 , and can be used to adjust the flow rate of the raw material in the conveying container 200 .
[0043] In this embodiment, the pH value monitoring device 100 may further include a temperature sensor 173 for detecting the temperature of the solution in the container 200. The temperature sensor 173 is electrically connected to the controller, and can collect the temperature of the solution. When the temperature of the solution is not within a specified temperature range, the controller controls the alarm prompt unit to issue an alarm prompt.
[0044] Please refer again Figure 2In this embodiment, the pH value monitoring device 100 may further include a stirrer 174 disposed on the container 200 and a third shut-off valve 172 disposed on the drainage channel at the bottom of the container 200. The stirrer 174 is used to stir the solution in the container 200, and the third shut-off valve 172 is usually in a closed state. When the solution in the container 200 needs to be discharged, the third shut-off valve 172 is opened.
[0045] In this embodiment, various types of switch valves (such as the first switch valve 114, the second switch valve 142, etc.), various types of regulating valves (such as the first regulating valve 122, the second regulating valve 152, etc.), various types of cut-off valves (such as the first cut-off valve 123, the second cut-off valve 171, etc.), and various types of flow meters (such as the first flow meter 121, the second flow meter 151, etc.) can all be electronically controlled devices and can all be electrically connected to the controller to facilitate the controller to control the switching of the corresponding valves.
[0046] In this embodiment, the first raw material, the second raw material, the third raw material, etc. can all be flexibly determined according to actual conditions. For example, in a CMC (Carboxymethyl Cellulose) workshop, the first raw material can be dilute wine, the second raw material can be tap water, and the third raw material can be CMC. The container 200 can be a washing tank, and the pH value can be adjusted by the hydrochloric acid solution, and the container 200 can be a washing tank. During the production process of the CMC workshop, the washing tank will show that the material is alkaline, but according to process control, it is generally necessary to control the pH value within a neutral range. To prevent the solution in the washing tank from being too acidic, in a single process, if the total flow rate of the hydrochloric acid solution input into the washing tank counted by the first flowmeter 121 exceeds the set flow rate, the first regulating valve 122 and the first shut-off valve 123 are controlled to be closed.
[0047] It should be noted that in this embodiment, the collection and processing of various data signals are conventional technologies, and the improvements of this application are in the connection relationship between various electronic components and structures, and do not involve improvements in computer programs or method flows.
[0048] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the various embodiments can be combined with each other without conflict, and the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.
Claims
1. A pH value monitoring device, characterized in that: The device comprises: M pH sensors, wherein M is an integer greater than or equal to 3, at least one pH sensor is connected to the bottom of the container through a connecting pipe, and is used to detect the pH value of the solution at the bottom of the container, and the connecting pipe is provided with a first switch valve; at least one pH sensor is provided in the middle of the container, and is used to detect the pH value of the solution in the middle of the container; at least one pH sensor is provided in the upper part of the container, and is used to detect the pH value of the solution in the upper part of the container; A regulating pipeline for regulating the pH value of the solution contained in the container, wherein the regulating pipeline includes a regulating pipeline and a first flow meter and a first regulating valve arranged on the regulating pipeline.
2. The device according to claim 1, characterized in that The regulating pipeline also includes a first shut-off valve arranged on one end of the regulating pipeline close to the container, the first flow meter is located on the end of the regulating pipeline away from the container, and the first regulating valve is located between the first flow meter and the first shut-off valve.
3. The device according to claim 2, characterized in that The device also includes a controller, which is electrically connected to the M PH sensors, the first flow meter, the first regulating valve and the first shut-off valve.
4. The device according to claim 3, characterized in that The controller is used to control the first regulating valve and the first shut-off valve to close when receiving the electrical signals output by the M pH sensors indicating that the pH value is within a specified range.
5. The device according to claim 3, characterized in that The device also includes an alarm prompting unit electrically connected to the controller.
6. The device according to claim 1, characterized in that The device also includes a liquid level measuring pipeline, which includes a measuring pipeline and a liquid level gauge arranged on the measuring pipeline, one end of the measuring pipeline is connected to the upper part of the container, and the other end of the measuring pipeline is connected to the bottom of the container, a second switch valve is arranged at one end of the measuring pipeline, and a third switch valve is arranged at the other end of the measuring pipeline, and the liquid level gauge is located between the second switch valve and the third switch valve on the measuring pipeline.
7. The device according to claim 1, characterized in that The device also includes a first delivery pipeline for delivering a first raw material to the container and a second delivery pipeline for delivering a second raw material to the container; The first delivery pipeline includes a first delivery pipeline and a second flowmeter and a second regulating valve arranged on the first delivery pipeline; the second delivery pipeline includes a second delivery pipeline and a third flowmeter and a third regulating valve arranged on the second delivery pipeline.
8. The device according to claim 6, characterized in that The device also includes a third delivery pipeline for delivering a third raw material to the container, wherein the third delivery pipeline includes a third delivery pipe and a second shut-off valve arranged on the third delivery pipe.
9. The device according to any one of claims 1 to 8, characterized in that The device also includes a temperature sensor for detecting the temperature of the solution in the container.
10. The device according to any one of claims 1 to 8, characterized in that The device also includes a stirrer arranged on the container and a third cut-off valve arranged on the drainage channel at the bottom of the container.