Online ore pulp pH meter

Abstract

The utility model discloses an on-line ore pulp pH meter, which relates to the technical field of measuring equipment, and is characterized by comprising a pH controller and a detection pen electrically connected with the pH controller, the detection pen comprises a protective structure, the protective structure comprises a shell, an air cavity is formed between the inner side and the outer layer of the shell, and an air inlet is formed in the air cavity. The outer side of the shell is fixedly provided with a hollow air ring communicated with an air cavity in the shell, the hollow air ring is provided with four air inlets, and the hollow air ring is in bolted connection with a miniature fan with a power supply at the air inlets. High-hardness ore particles are effectively dispersed, air flow is prevented from directly impacting the glass electrode, and the damage risk is reduced; a telescopic structure is arranged, so that the glass electrode retracts into the sealed cabin in a non-measurement period, the exposure time is reduced by about 90%, a scaling layer is reduced, and the measurement stability is improved; meanwhile, dynamic turbulence is formed by utilizing an air-liquid synergistic cleaning mechanism, the cleaning effect is remarkably improved, and the method is more efficient and thorough than static soaking.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to an online slurry pH meter. Background Art

[0002] Glass electrodes must be used in place of metal electrodes (such as antimony electrodes and hydroquinone electrodes) for slurry pH measurement. The fundamental reason lies in the dual constraints of the fundamental differences in the electrodes' operating principles and the extremely corrosive environment of the slurry. Glass electrodes, based on the Nernst response mechanism of hydrogen selectively penetrating a hydrated glass membrane, can directly detect the concentration of free hydrogen ions in the slurry. Specially formulated lithium glass membranes (such as corning 015) are resistant to high alkaline environments of pH 10 to 12. Antimony electrodes, on the other hand, form a passivation layer of antimony trisulfide in sulfur-containing slurries, blocking their potential response. For hydroquinone electrodes, oxidizing substances in the slurry disrupt the equilibrium of the quinone / hydroquinone pair, leading to a measurement drift error of up to +1.5 pH. Furthermore, in the calcium and magnesium ion-rich environment created by the addition of lime, a dense calcium carbonate scaling layer rapidly forms on the metal electrode's surface, completely blocking the ion exchange channels.

[0003] However, when traditional glass electrodes are used to measure the pH of mineral slurries, high-hardness mineral particles (quartz and pyrite with Mohs hardness > 7) in the slurry will erode the surface of the glass electrode, causing microcracks or even complete rupture of the glass membrane, shortening its service life. Therefore, we propose a new online slurry pH meter. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an online slurry pH meter, which can effectively solve the problems raised by the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an online slurry pH meter, comprising a pH controller and a detection pen electrically connected to the pH controller, wherein the detection pen comprises a protective structure.

[0006] The protective structure includes an outer shell, an air cavity is formed between the inner side and the outer layer of the outer shell, a hollow air ring connected to the air cavity inside the outer shell is fixedly installed on the outer side of the outer shell, four air inlets are provided on the hollow air ring, and a micro-blower with a power supply is bolted to the hollow air ring at the air inlet. A plurality of inclined exhaust holes are provided at the bottom of the outer shell, a breathable and hydrophobic membrane is fixedly installed on the inclined exhaust holes, and an electrode protection fork is fixedly installed on the inner side of the bottom end of the outer shell.

[0007] Preferably, the oblique exhaust holes are evenly distributed in a circular shape at the bottom of the shell, wherein the angle between the axis of the oblique exhaust holes and the axis of the shell is thirty degrees.

[0008] Preferably, the threaded portion at the bottom end of the shell is connected to an electrode cover, wherein a thread adapted to the electrode cover is provided on the outer side of the bottom end of the shell.

[0009] Preferably, the detection pen also includes a telescopic structure, which includes a threaded head threadedly connected to the top of the shell, and the interior of the threaded head is symmetrically provided with a micro-electric telescopic rod mounting groove and a guide column mounting groove. The micro-electric telescopic rod is fixedly installed inside the micro-electric telescopic rod mounting groove, and the output end of the micro-electric telescopic rod is fixedly installed with an electrode member.

[0010] Preferably, a guide post is slidably connected to the interior of the guide post installation groove, wherein the lower end of the guide post is fixedly connected to the electrode member.

[0011] Preferably, the pH controller is connected to the electrode member via a wire, the wire passes through the axis of the threaded head, and a redundant wire coiled in a spiral shape is provided between the threaded head and the electrode member.

[0012] Preferably, the electrode assembly is composed of a glass electrode, a reference electrode, a temperature probe, an ammeter, a sleeve, a buffer solution inside the sleeve, and an amplifier.

[0013] Preferably, the pH controller is electrically connected to the micro-blower with power supply and the micro-electric telescopic rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model utilizes a protective structure that utilizes high-speed airflow generated by a powered micro-blower to form a circular air curtain that diffuses downward and outward through angled exhaust holes. This air curtain effectively disperses high-hardness ore particles near the electrode site, preventing them from eroding the glass electrode. Furthermore, the 30-degree angle design prevents direct impact of the airflow on the glass membrane, significantly reducing the risk of damage to the glass electrode and extending its service life.

[0016] 2. This utility model incorporates a telescopic structure that allows the glass electrode to be quickly retracted into a sealed chamber during non-measurement periods, isolating it from direct contact with the slurry. This design reduces the glass electrode's exposure time to the slurry by approximately 90%, effectively reducing the scaling layer formed by metal ions on the electrode surface, maintaining unobstructed ion exchange channels, and reducing contact between the electrode's sensitive membrane and oxidizing substances in the slurry, thereby improving measurement stability.

[0017] 3. This utility model's online slurry pH meter utilizes a powered micro-blower to generate airflow that combines with the cleaning fluid to create a synergistic air-liquid cleaning mechanism. This cleaning method utilizes the agitation and shear force of the airflow to create dynamic turbulence near the glass electrode, significantly improving the cleaning effect, effectively removing deposits, and promoting full contact and exchange between the cleaning fluid and the electrode surface. This is more efficient and thorough than simple static immersion cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the detection pen of the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-section structure;

[0021] Figure 4 This is a schematic structural diagram of the telescopic structure of the utility model;

[0022] Figure 5 The schematic diagram of the structure of the oblique exhaust hole and the breathable and hydrophobic membrane of the utility model is complete.

[0023] In the picture:

[0024] 1. pH controller; 2. Test pen; 201. Protective structure; 2011. Housing; 2012. Air cavity; 2013. Hollow air ring; 2014. Micro blower with power supply; 2015. Oblique exhaust hole; 2016. Breathable and hydrophobic membrane; 2017. Electrode protective fork; 202. Telescopic structure; 2021. Threaded head; 2022. Micro electric telescopic rod; 2023. Electrode components. DETAILED DESCRIPTION

[0025] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0026] The utility model provides a technical solution:

[0027] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5An online slurry pH meter includes a pH controller 1 and a detection pen 2 electrically connected to the pH controller 1, and the detection pen 2 includes a protective structure 201.

[0028] The protective structure 201 includes an outer shell 2011, and an air cavity 2012 is formed between the inner and outer layers of the outer shell 2011. A hollow air ring 2013 connected to the air cavity 2012 in the outer shell 2011 is fixedly installed on the outer side of the outer shell 2011. Four air inlets are provided on the hollow air ring 2013. A micro fan 2014 with a power supply is bolted to the hollow air ring 2013 at the air inlet. A number of inclined exhaust holes 2015 are provided at the bottom of the outer shell 2011. A breathable and hydrophobic membrane 2016 is fixedly installed on the inclined exhaust holes 2015. An electrode protection fork 2017 is fixedly installed on the inner side of the bottom end of the outer shell 2011.

[0029] When powered micro-blower 2014 is activated, air flows through hollow ring 2013 into air cavity 2012, where it is ejected at high speed through oblique exhaust holes 2015, forming a circular air curtain that disperses particles and protects the glass electrode. This effectively protects the glass electrode from high-hardness ore particles, preventing direct airflow from damaging the glass membrane. Furthermore, electrode protection forks 2017 provide dual protection, extending the electrode's service life.

[0030] In some embodiments, the oblique exhaust holes 2015 are evenly distributed in a circular shape at the bottom of the housing 2011 , wherein the angle between the axis of the oblique exhaust holes 2015 and the axis of the housing 2011 is thirty degrees.

[0031] The oblique exhaust holes 2015 are evenly distributed in a circular shape at the bottom of the shell 2011, with their axis forming a 30-degree angle with the axis of the shell 2011. During operation, air is ejected obliquely from them to form an annular air curtain, which effectively disperses high-hardness particles near the electrode and prevents the airflow from directly hitting the glass electrode. The function is to reduce the risk of damage to the glass electrode, provide a clean measurement environment, and extend the service life of the electrode.

[0032] In some embodiments, the bottom end of the shell 2011 is threadedly connected to an electrode cover, wherein the outer side of the bottom end of the shell 2011 is provided with a thread adapted to the electrode cover.

[0033] In this embodiment, a thread is provided on the outer side of the bottom end of the shell 2011 to connect the electrode cover. During operation, the electrode cover can be installed or removed by rotation. Its function is to protect the electrode of the detection pen 2 from damage when it is not in operation or during transportation. At the same time, the electrode cover is removed during measurement to ensure that the glass electrode can normally contact the slurry for detection, providing a convenient protection and operation method.

[0034] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The detection pen 2 also includes a telescopic structure 202. The telescopic structure 202 includes a threaded head 2021 threadedly connected to the top of the shell 2011. The inside of the threaded head is symmetrically provided with a micro-electric telescopic rod mounting groove and a guide column mounting groove. A micro-electric telescopic rod 2022 is fixedly installed inside the micro-electric telescopic rod mounting groove, and an electrode component 2023 is fixedly installed at the output end of the micro-electric telescopic rod 2022.

[0035] During the operation of the telescopic structure 202 of the detection pen 2, the pH controller 1 controls the extension and retraction of the micro-electric telescopic rod 2022, driving the electrode component 2023 fixed at its output end to move up and down. The function is to retract the glass electrode into the housing 2011 to reduce the exposure time when not measuring, and extend it to immerse it in the slurry during measurement, thereby protecting the electrode, extending its service life and improving measurement stability.

[0036] In some embodiments, a guide post is slidably connected to the interior of the guide post installation groove, wherein the lower end of the guide post is fixedly connected to the electrode member 2023 .

[0037] In this embodiment, the guide post is slidably connected to the other side of the threaded head 2021, and its lower end is fixedly connected to the electrode member 2023. During operation, the guide post slides with the extension and retraction of the micro-electric telescopic rod 2022. Its function is to ensure that the electrode member 2023 remains stable when moving up and down, without deflection or shaking, thereby ensuring that the glass electrode is accurately immersed in the slurry and safely retracted, thereby improving the accuracy and reliability of the measurement.

[0038] In some embodiments, the pH controller 1 is connected to the electrode member 2023 via a wire, which passes through the axis of the threaded head 2021 , and a redundant wire is disposed between the threaded head 2021 and the electrode member 2023 in a spiral shape.

[0039] In this embodiment, the pH controller 1 and the electrode component 2023 are connected by a wire that passes through the axis of the threaded head 2021, and a redundant wire is provided between the threaded head 2021 and the electrode component 2023. During operation, the redundant wire expands and contracts as the electrode component moves. Its function is to ensure that the wire connection is stable and avoid pulling and breaking, while ensuring that the measurement signal is accurately transmitted to the pH controller 1 for processing and display.

[0040] In some embodiments, the electrode component 2023 is composed of a glass electrode, a reference electrode, a temperature probe, an ammeter, a sleeve, a buffer solution inside the sleeve, and an amplifier.

[0041] In this embodiment, the electrode component 2023 is composed of a glass electrode, a reference electrode, etc. During operation, the glass electrode detects the pH value of the slurry, the reference electrode provides a stable potential, the temperature probe measures the temperature, the ammeter converts the signal, the buffer solution in the casing maintains the potential stable, and the amplifier amplifies the signal. The function of these components is to work together to accurately measure and transmit the pH value of the slurry and related data to the pH controller 1.

[0042] In some embodiments, the pH controller 1 is electrically connected to the micro-blower 2014 with power supply and the micro-electric telescopic rod 2022 .

[0043] In this embodiment, the pH controller 1 is electrically connected to the powered micro-blower 2014 and the micro-electric telescopic rod 2022. During operation, the pH controller 1 can control the powered micro-blower 2014 to start forming an air curtain to protect the electrode, and control the micro-electric telescopic rod 2022 to move the electrode.

[0044] When used specifically, the working principle of the utility model is as follows:

[0045] When using this online slurry pH meter, first securely install the test pen 2 in the desired position using the test pen mounting bracket, ensuring that its detection tip is submerged below the surface of the slurry to be measured, but that the precision glass electrode of electrode 2023 is not yet exposed to the slurry. Then, securely connect the test pen 2 to the pH controller 1 using a wire.

[0046] When slurry pH measurement is required, pH controller 1 issues a command to activate powered micro-blower 2014. The airflow generated by powered micro-blower 2014 enters air cavity 2012 inside housing 2011 through the air inlet of hollow ring 2013. The airflow is then ejected at high speed through oblique exhaust holes 2015 evenly distributed across the bottom of housing 2011. The axes of the oblique exhaust holes 2015 form a 30-degree angle with the axis of housing 2011 and are evenly distributed around the circumference. This causes the ejected airflow to instantly form a downward- and outward-spreading annular air curtain, covering the area where the electrode is about to be extended. This dynamic air curtain has multiple protective functions (resisting particle erosion: the centrifugal flow field formed by the high-speed airflow can effectively disperse the high-hardness mineral particles such as quartz and pyrite near the electrode site, and generate outward thrust, continuously pushing the particles away from the surface of the glass electrode sensitive membrane that is about to be exposed, significantly reducing the risk of particles with Mohs hardness >7 causing microcracks or breakage of the glass membrane. Preventing direct damage from airflow: the 30-degree bevel design ensures that the airflow does not impact the glass electrode surface vertically, but forms a ring-shaped package, which pushes away the particles while avoiding the damage that the high-speed airflow itself may cause to the fragile glass membrane).

[0047] At the same time, the electrode protection fork 2017 fixedly installed on the inner side of the bottom end of the shell 2011 provides a solid physical barrier, which further blocks larger or partially pushed away ore particles from directly hitting the glass electrode on the basis of the airflow field, forming double protection.

[0048] Once the air curtain stabilizes and creates a relatively clean measurement microenvironment for the glass electrode, pH controller 1 controls the movement of telescopic structure 202. Under the controller's command, the miniature electric telescopic rod 2022 precisely extends downward, pushing electrode element 2023 downward, allowing the glass electrode at its lower end to pass through the air curtain's protective area and ultimately immerse itself in the slurry for pH measurement. The measurement signal is transmitted via wires to pH controller 1 for processing and display.

[0049] After the measurement is completed, the pH controller 1 immediately controls the micro electric telescopic rod 2022 to retract, quickly lifting the electrode component 2023 and its core glass electrode out of the slurry environment and retracting it into the relatively sealed chamber inside the housing 2011. This reduces the time the glass electrode is exposed to the highly corrosive and high scaling risk slurry by about 90%, greatly reducing the risk of metal ions such as 、 The speed and degree of forming a dense calcium carbonate scaling layer on the electrode surface keeps the ion exchange channel unobstructed. At the same time, it reduces the contact between the electrode sensitive membrane and the oxidizing substances in the slurry, such as , dissolved oxygen contact time helps maintain measurement stability and avoid significant drift errors.

[0050] In addition, when the electrode needs to be cleaned to remove any residue or slight scaling that may be attached, the detection pen 2 can be immersed in a special cleaning liquid. At this time, the powered micro-blower 2014 is started again. As mentioned above, the airflow generated by the blower is ejected from the oblique exhaust hole 2015 through the air cavity 2012, forming a strong annular air curtain and turbulence in the cleaning liquid. This air-liquid synergistic cleaning mechanism: utilizing the agitation and shear force of the airflow, the dynamic turbulence formed near the glass electrode significantly improves the cleaning effect and effectively removes attachments. It promotes full contact and exchange between the cleaning liquid and the electrode surface, helps dissolve and remove potential scaling such as calcium carbonate, and is more efficient and thorough than simple static immersion cleaning. The breathable and hydrophobic membrane 2016 allows airflow to pass through during the cleaning process, while preventing the cleaning liquid or slurry from flowing back into the air cavity 2012.

[0051] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. An online slurry pH meter, characterized in that: It includes a pH controller and a detection pen electrically connected to the pH controller, and the detection pen includes a protective structure; The protective structure includes an outer shell, and an air cavity is formed between the inner and outer layers of the outer shell. A hollow air ring connected to the air cavity inside the outer shell is fixedly installed on the outer side of the outer shell. Four air inlets are provided on the hollow air ring. The hollow air ring is located at the air inlet and is bolted to a micro fan with a power supply. Several inclined exhaust holes are provided at the bottom of the outer shell, and a breathable and hydrophobic membrane is fixedly installed on the inclined exhaust holes. An electrode protection fork is fixedly installed on the inner side of the bottom end of the outer shell.

2. An online slurry pH meter according to claim 1, characterized in that: The oblique exhaust holes are evenly distributed in a circular shape on the bottom of the shell, wherein the angle between the axis of the oblique exhaust holes and the axis of the shell is thirty degrees.

3. The online slurry pH meter according to claim 1, characterized in that: The thread at the bottom end of the shell is connected with the electrode cover, wherein the outer side of the bottom end of the shell is provided with a thread adapted to the electrode cover.

4. The online slurry pH meter according to claim 1, characterized in that: The detection pen also includes a telescopic structure, which includes a threaded head threadedly connected to the top of the shell, and the interior of the threaded head is symmetrically provided with a micro-electric telescopic rod mounting groove and a guide column mounting groove. The micro-electric telescopic rod is fixedly installed inside the micro-electric telescopic rod mounting groove, and the output end of the micro-electric telescopic rod is fixedly installed with an electrode component.

5. The online slurry pH meter according to claim 4, characterized in that: The guide post is slidably connected inside the guide post installation groove, wherein the lower end of the guide post is fixedly connected to the electrode member.

6. The online slurry pH meter according to claim 4, characterized in that: The pH controller is connected to the electrode component through a wire, which passes through the axis of the threaded head, and a redundant wire coiled in a spiral shape is provided between the threaded head and the electrode component.

7. The online slurry pH meter according to claim 4, characterized in that: The electrode assembly is composed of a glass electrode, a reference electrode, a temperature probe, an ammeter, a sleeve, a buffer solution inside the sleeve, and an amplifier.

8. The online slurry pH meter according to claim 4, characterized in that: The pH controller is electrically connected to the micro blower with power supply and the micro electric telescopic rod.

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