Phosphorite flotation froth thickness detection rod

Abstract

The utility model relates to the technical field of phosphorite flotation equipment, in particular to a phosphorite flotation froth thickness detection rod which comprises a hollow rod, a lifting component is vertically arranged in the hollow rod, a blocking body is installed at the bottom end of the hollow rod, the lifting component comprises a screw rod, a round sliding piece is installed at the bottom end of the screw rod, and the round sliding piece is connected with the hollow rod. A first scale plate is installed on the outer wall of the hollow rod, and a second scale plate is installed on the outer wall of the screw rod. According to the phosphorite flotation froth thickness detection rod, the principle of resistance difference between ore pulp and froth is utilized, the lifting component is arranged in the hollow rod and matched with the first scale plate on the outer wall and the second scale plate on the screw rod, accurate measurement of the thickness of a froth layer is achieved, compared with a traditional manual measurement mode, interference of human factors is effectively avoided, and the measurement accuracy is improved. The measurement precision is greatly improved; compared with complex detection equipment such as laser ranging, the detection rod is simple in structure, low in cost and convenient to operate, and complex debugging and calibration processes are not needed.

Description

Technical Field

[0001] This utility model relates to the technical field of phosphate rock flotation equipment, and more specifically, to a phosphate rock flotation foam thickness detection rod. Background Technology

[0002] In phosphate rock flotation, the thickness of the flotation froth layer is a key factor affecting flotation efficiency, closely related to mineral recovery and concentrate grade. During roughing and scavenging stages, a moderately thin froth layer helps recover less floatable minerals and associated minerals as much as possible; however, an excessively thin froth layer weakens secondary enrichment, making the pulp easily scraped away, resulting in some target minerals not being fully recovered and entering the tailings, reducing recovery. Simultaneously, impurities are mixed into the concentrate, affecting concentrate quality. Conversely, if the froth layer is too thick, the upper bubbles become larger, reducing the total surface area. Floating coarse particles or difficult-to-float minerals easily detach from the bubbles and return to the pulp, eventually being discharged with the tailings, also leading to a decrease in recovery. Only by maintaining a froth layer of appropriate thickness can secondary enrichment be enhanced, allowing gangue and other impurities to detach and return to the pulp during the froth's ascent, thereby improving concentrate grade.

[0003] However, accurately determining the actual thickness of the froth layer in actual phosphate ore flotation operations presents numerous challenges. Existing technologies lack efficient, convenient, and precise detection methods, making it difficult for operators to obtain real-time froth layer thickness data and adjust process parameters accordingly. This often leads to deterioration of process performance, impacting the overall effectiveness and economic benefits of phosphate ore flotation. Therefore, there is an urgent need to develop reliable detection devices to address the problem of accurately determining the actual thickness of the froth layer in practical operations, meeting the requirement for real-time froth layer thickness monitoring and subsequent process parameter adjustments.

[0004] Currently, there are detection devices that utilize technologies such as ultrasonic ranging and laser ranging. Taking Chinese patent CN201010227289 as an example, a portable laser ranging sensor emits a laser signal towards the flotation foam in the flotation cell, and the reflected signal is used to calculate the distance and thus the foam thickness. While this method improves measurement accuracy to some extent, the equipment is complex in structure, expensive, and easily affected by the characteristics of the slurry foam (such as foam stability and bubble size distribution) and the on-site environment (such as dust and fog), leading to deviations in the measurement results. Utility Model Content

[0005] The purpose of this invention is to provide a foam thickness detection rod for phosphate rock flotation, in order to solve the problem mentioned in the background art that the existing technology lacks efficient, convenient and accurate detection methods, making it difficult for operators to obtain foam layer thickness data in real time and unable to adjust process parameters in a timely manner according to the actual situation. This often leads to a deterioration of process technical indicators, affecting the overall effect and economic benefits of phosphate rock flotation.

[0006] To achieve the above objectives, this utility model provides a phosphate rock flotation froth thickness detection rod, comprising a hollow rod, a vertically arranged lifting component inside the hollow rod, a stop body installed at the bottom end of the hollow rod, the lifting component including a screw, a circular sliding member installed at the bottom end of the screw, a first scale plate installed on the outer wall of the hollow rod, and a second scale plate installed on the outer wall of the screw. The scale of the first scale plate gradually increases vertically from bottom to top, and the scale of the second scale plate gradually decreases vertically from bottom to top. Arc-shaped protrusions are installed on both sides of the circular sliding member. The hollow rod has a guide groove on its inner wall that matches the arc-shaped protrusion. The circular sliding member can slide vertically along the inner wall of the hollow rod through the cooperation of the arc-shaped protrusion and the guide groove. When the hollow rod is inserted into the froth layer of the flotation cell slurry, the foam resistance is small, and the lifting component is not pushed due to the small resistance. The scale reading on the screw does not change. When the hollow rod continues to go deeper and encounters the slurry surface, the slurry resistance is large, pushing the lifting component to rise. The reading when the screw extends out of the top of the hollow rod is recorded as L1, and the reading of the liquid level on the hollow rod is L2. At this time, the thickness of the foam layer is L2-L1.

[0007] This setup utilizes the difference in resistance between the slurry and the foam on the detection rod. The lifting mechanism inside the hollow rod can move within it. When the hollow rod is inserted into the flotation cell, the foam offers little resistance to the lifting mechanism, preventing it from moving. When the hollow rod contacts the slurry surface, the greater resistance of the slurry pushes the lifting mechanism upward. The slurry level and screw extension readings are recorded using the first scale plate on the outer wall of the hollow rod and the second scale plate on the outer wall of the screw, respectively. The difference between these two readings is used to calculate the foam layer thickness.

[0008] Preferably, the hollow rod is made of PVC pipe with an inner diameter of 2cm to 3cm, a thickness of 0.3cm to 0.5cm, and a length of 1.5 to 2.0m.

[0009] This setup uses PVC pipe as the hollow rod material due to its good chemical stability, corrosion resistance, and certain strength, enabling it to adapt to the complex environment within the phosphate flotation cell. Specific ranges for inner diameter, thickness, and length are set: the inner diameter ensures smooth movement of the lifting components within the hollow rod; the thickness ensures the structural strength and durability of the hollow rod; and the length meets the measurement needs of flotation cells at different depths in actual testing scenarios.

[0010] Preferably, the top of the hollow rod is provided with an anti-slip grip part, which is made of transparent plastic material.

[0011] This feature includes a non-slip grip at the top of the hollow rod. Utilizing the principle of increased friction on the contact surface, and through specific surface textures or material properties, it prevents the operator from slipping while holding the testing rod. The use of transparent plastic material ensures both a non-slip effect and prevents obstruction of the scale at the top of the hollow rod, making readings easy.

[0012] Preferably, the diameter of the circular slider is adapted to the inner diameter of the hollow rod; the circular slider and the screw are fixed together by a threaded connection.

[0013] This feature ensures that the diameter of the circular slider matches the inner diameter of the hollow rod, allowing the circular slider to slide only axially within the hollow rod and restricting its radial movement. This guarantees the stability and accuracy of the lifting component's movement. The circular slider and the screw are connected by a thread, facilitating installation and disassembly while ensuring a secure connection that prevents loosening during lifting.

[0014] Preferably, the stop includes an annular component, a cross structure is installed on the inner bottom of the annular component, the size of the circular sliding component is adapted to the inner wall size of the annular component, and a plurality of limiting blocks are installed on the bottom of the circular sliding component, the gap between the limiting blocks and the cross structure is adapted to the gap between the limiting blocks and the cross structure.

[0015] This device features a ring-shaped component and a cross-shaped structure that form a stable support structure. The cross-shaped structure at the bottom inner side of the ring-shaped component limits and guides the circular sliding component, preventing it from swaying or shifting at the bottom of the hollow rod and ensuring that it can accurately rise axially under the resistance of the slurry. The circular sliding component is matched with the inner wall size of the ring-shaped component, further enhancing the limiting effect.

[0016] Preferably, the cross structure of the baffle is made of an aluminum strip with a thickness of 0.5 to 1 cm.

[0017] The cross structure of this stop is made of aluminum strips of a specific thickness. Aluminum is lightweight and high-strength, which reduces the overall weight while ensuring the strength of the stop structure. The appropriate thickness ensures that the cross structure can effectively support and limit the circular sliding part, but will not affect the normal movement of the circular sliding part due to excessive thickness.

[0018] Preferably, both the first and second scale plates are provided with a fluorescent layer, which can clearly display the scale readings in low light conditions, making it easier for operators to read the data.

[0019] This feature involves placing fluorescent layers on the first and second scale plates. By utilizing the characteristic of fluorescent materials to emit light spontaneously or slowly release light after absorbing it in low-light environments, the scale remains clearly visible in darkness or low-light conditions.

[0020] Preferably, the outer wall of the hollow rod is equipped with a horizontal bubble meter to determine whether the hollow rod is in a vertical state during testing, thereby ensuring the accuracy of the foam layer thickness test data.

[0021] This horizontal bubble meter, with its hollow rod on the outer wall, is based on the principles of gravity and liquid surface tension. When the hollow rod is vertical, the bubble is located at the center of the horizontal bubble meter; if the hollow rod is tilted, the bubble will shift. By observing the bubble's position, it can be determined whether the hollow rod is perpendicular to the flotation tank's liquid surface.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This phosphate ore flotation foam thickness measuring rod utilizes the principle of resistance difference between the slurry and the foam. A lifting component is installed inside the hollow rod, along with a first scale plate on the outer wall and a second scale plate on the screw, to achieve accurate measurement of the foam layer thickness. Compared with traditional manual measurement methods, it effectively avoids interference from human factors and significantly improves measurement accuracy. Compared with complex detection equipment such as laser ranging, this measuring rod has a simple structure, low cost, and is easy to operate. It does not require complicated debugging and calibration procedures, and on-site operators can quickly get started using it.

[0024] Meanwhile, the hollow rod uses PVC pipe of a specific specification, ensuring the strength and durability of the testing rod while maintaining a degree of portability. The anti-slip grip at the top provides a more stable hold for operators, reducing operational errors. The circular sliding component matches the inner diameter of the hollow rod, and the special structure of the stop ensures stable movement of the lifting components, making the test data more reliable. The fluorescent layer design on the first and second scale plates facilitates readings in low-light conditions. The horizontal bubble meter ensures the verticality of the testing rod, further improving the accuracy of the test data. These design features effectively solve the problem of accurately controlling the foam layer thickness in actual operation, helping operators obtain accurate data in a timely manner. This allows for rapid adjustment of process parameters according to process needs, ensuring stable technical indicators in the phosphate rock flotation process, improving mineral recovery and concentrate grade, and ultimately enhancing the overall economic benefits and production efficiency of phosphate rock flotation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the baffle in this utility model;

[0027] Figure 3 This is a schematic diagram illustrating the use of this utility model;

[0028] Figure 4 This is a schematic diagram of the circular sliding component in this utility model;

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Hollow rod; 11. First scale plate; 12. Horizontal bubble meter; 2. Lifting component; 21. Screw; 22. Circular sliding component; 221. Arc-shaped protrusion; 222. Limiting block; 23. Second scale plate; 3. Stop; 31. Ring component; 32. Cross structure; 4. Anti-slip grip. Detailed Implementation

[0031] 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.

[0032] This utility model provides a phosphate ore flotation foam thickness detection rod, such as... Figure 1 , Figure 3 , Figure 4 As shown, the device includes a hollow rod 1, with a lifting component 2 vertically arranged inside the hollow rod 1. A stop 3 is installed at the bottom end of the hollow rod 1. The lifting component 2 includes a screw 21, with a circular sliding member 22 installed at the bottom end of the screw 21. A first scale plate 11 is installed on the outer wall of the hollow rod 1, and a second scale plate 23 is installed on the outer wall of the screw 21. The scales of the first scale plate 11 gradually increase vertically from bottom to top, while the scales of the second scale plate 23 gradually decrease vertically from bottom to top. Arc-shaped protrusions 221 are installed on both sides of the circular sliding member 22. The inner wall of the hollow rod 1 has openings that correspond to... The guide groove cooperates with the arc-shaped protrusion 221. The circular sliding member 22 can slide vertically along the inner wall of the hollow rod 1 through the cooperation of the arc-shaped protrusion 221 and the guide groove. When the hollow rod 1 is inserted into the froth layer of the flotation cell slurry, the foam resistance is small, and the lifting component 2 is not pushed due to the small resistance. The scale reading on the screw 21 does not change. When the hollow rod 1 continues to go deeper and encounters the slurry surface, the slurry resistance is large, pushing the lifting component 2 to rise. The reading of the screw 21 extending out of the top of the hollow rod 1 is recorded as L1, and the reading of the liquid level on the hollow rod 1 is L2. At this time, the thickness of the foam layer is L2-L1.

[0033] The difference in resistance between the slurry and foam on the detection rod is utilized. The lifting component 2 inside the hollow rod 1 can move within the hollow rod 1. When the hollow rod 1 is inserted into the flotation cell, the foam exerts little resistance on the lifting component 2, preventing it from moving. When the hollow rod 1 contacts the slurry surface, the greater resistance of the slurry pushes the lifting component 2 upward. The slurry level reading and the screw extension reading are recorded via the first scale plate 11 on the outer wall of the hollow rod 1 and the second scale plate 23 on the outer wall of the lifting component 2 (which is connected to the screw 21). The difference between these two readings is used to calculate the foam layer thickness. This method enables convenient and accurate measurement of the foam layer thickness in phosphate rock flotation, transforming the physical differences between the slurry and foam into quantifiable scale readings. This avoids errors from subjective human judgment, allowing operators to quickly obtain accurate foam layer thickness data and providing a reliable basis for adjusting flotation process parameters.

[0034] In this embodiment, as Figure 1 , Figure 3 As shown, the hollow rod 1 is made of PVC pipe with an inner diameter of 2cm to 3cm, a thickness of 0.3cm to 0.5cm, and a length of 1.5 to 2.0m.

[0035] PVC pipe is selected as the material for the hollow rod 1 because it has good chemical stability, corrosion resistance, and a certain strength, enabling it to adapt to the complex environment inside the phosphate flotation cell. This ensures the service life and stability of the detection rod, making it less prone to damage in the harsh environment of phosphate flotation. The appropriate size design allows the detection rod to combine strength and portability, making it easy to carry and operate, while ensuring the normal operation of the internal lifting components 2 without affecting the accuracy of the foam layer thickness detection.

[0036] Specifically, such as Figure 1 , Figure 3 As shown, the top of the hollow rod 1 is provided with an anti-slip grip part 4, which is made of transparent plastic material.

[0037] A non-slip grip part 4 is provided at the top of the hollow rod 1. Utilizing the principle of increasing the friction of the contact surface, and through specific surface textures or material properties, it prevents the operator from slipping when holding the testing rod. The non-slip grip part 4 is made of transparent plastic material, ensuring both anti-slip effect and not obscuring the scale at the top of the hollow rod 1, facilitating readings. This improves the safety and convenience of operating the testing rod, allowing the operator to hold the testing rod more stably for measurement and reducing operational errors caused by slippage; the transparent material design ensures the integrity and accuracy of the readings, making the testing process more efficient.

[0038] Furthermore, such as Figure 1 , Figure 3 As shown, the diameter of the circular slider 22 is matched with the inner diameter of the hollow rod 1; the circular slider 22 and the screw 21 are fixed together by a threaded connection.

[0039] The circular sliding element 22, whose diameter matches the inner diameter of the hollow rod 1, ensures that the circular sliding element 22 can only slide axially within the hollow rod 1, limiting its radial movement and guaranteeing the stability and accuracy of the lifting component 2's movement. The circular sliding element 22 is fixed to the screw 21 via a threaded connection, facilitating installation and disassembly while ensuring a secure connection that prevents loosening during lifting. This allows the lifting component 2 to rise stably under the resistance of the slurry, ensuring the reliability of the detection data. The threaded connection also facilitates later maintenance and component replacement, reducing equipment maintenance costs and extending the service life of the detection rod.

[0040] Furthermore, such as Figure 2 As shown, the stop body 3 includes an annular part 31, a cross structure 32 is installed on the inner bottom of the annular part 31, the size of the circular sliding part 22 is adapted to the inner wall size of the annular part 31, and a number of limiting blocks 222 are installed on the bottom of the circular sliding part 22, the gap between the limiting blocks 222 and the cross structure 32 is adapted to each other.

[0041] The stop 3 includes an annular component 31 and a cross structure 32, forming a stable support structure. The cross structure 32 on the inner bottom of the annular component 31 limits the circular sliding component 22, preventing it from swaying or shifting at the bottom of the hollow rod 1, ensuring it can accurately rise axially under the resistance of the slurry. The inner wall dimensions of the circular sliding component 22 are adapted to the annular component 31, further enhancing the limiting effect. This improves the accuracy of the movement of the lifting component 2, avoids measurement errors caused by component swaying, and allows the detection rod to more accurately reflect the actual situation of the slurry surface and foam layer, improving the accuracy of foam layer thickness detection.

[0042] Furthermore, such as Figure 2 As shown, the cross structure 32 of the block 3 is made of an aluminum strip with a thickness of 0.5 to 1 cm.

[0043] The cross structure 32 of the stop 3 is made of an aluminum strip with a thickness of 0.5-1cm. Aluminum is lightweight and high-strength, which reduces the overall weight while ensuring the structural strength of the stop 3. The appropriate thickness ensures that the cross structure 32 can effectively support and limit the circular sliding part 22. The performance of the stop 3 is optimized, making the detection rod more lightweight and easier to operate while maintaining a stable structure; it also ensures that the circular sliding part 22 rises smoothly under the resistance of the slurry, maintaining the stability and accuracy of the detection process.

[0044] Furthermore, such as Figure 1 , Figure 3 As shown, both the first scale plate 11 and the second scale plate 23 are provided with fluorescent layers. The fluorescent layers can clearly display the scale readings in low light conditions, making it easier for operators to read the data.

[0045] A fluorescent layer is provided on both the first scale plate 11 and the second scale plate 23. Utilizing the characteristic of fluorescent materials to emit light spontaneously or slowly release light after absorbing it in low-light environments, the scale remains clearly visible even in darkness or low light conditions. This broadens the application scenarios of the detection rod. Whether it's day or night, or a dimly lit flotation workshop, operators can easily read the scale data, avoiding reading errors caused by lighting issues and improving detection efficiency and accuracy.

[0046] Furthermore, such as Figure 1 , Figure 3 As shown, a horizontal bubble meter 12 is installed on the outer wall of the hollow rod 1 to determine whether the hollow rod 1 is in a vertical state during testing, so as to ensure the accuracy of the foam layer thickness test data.

[0047] The horizontal bubble meter 12, installed on the outer wall of the hollow rod 1, operates based on the principles of gravity and liquid surface tension. When the hollow rod 1 is vertical, the bubble is centered within the horizontal bubble meter 12; if the hollow rod 1 is tilted, the bubble will shift. By observing the bubble's position, it can be determined whether the hollow rod 1 is perpendicular to the flotation tank surface. Ensuring the detection rod is vertical during measurement avoids measurement errors caused by its tilt, thus guaranteeing the accuracy of the foam layer thickness detection data and making the results more scientific and reliable.

[0048] When using the phosphate flotation froth thickness detection rod of this utility model, the operator first holds the anti-slip grip part 4 at the top of the hollow rod 1, checks whether all parts of the detection rod are intact, confirms that the bubbles in the horizontal bubble meter 12 are centered, and ensures that the hollow rod 1 is in a vertical state to ensure the accuracy of subsequent measurements. The detection rod is then vertically inserted into the flotation cell, allowing the hollow rod 1 to slowly pass through the slurry froth layer. During this process, due to the small resistance of the froth, the lifting component 2 will not move, and the reading on the second scale plate 23 on the screw 21 will not change. The hollow rod 1 is then slowly inserted until it contacts the slurry surface. At this point, the greater resistance of the slurry pushes the lifting component 2 upwards inside the hollow rod 1, and the screw 21 extends out accordingly. The insertion of the detection rod is stopped, and the reading L1 on the second scale plate 23 corresponding to the slurry level on the hollow rod 1 is read, along with the reading L2 on the first scale plate 11 corresponding to the slurry level. The thickness of the froth layer in the flotation cell is calculated using the formula L2-L1, thus obtaining accurate froth layer thickness data and providing a reliable basis for subsequent adjustment of phosphate rock flotation process parameters. After measurement, the measuring rod is removed from the flotation cell, cleaned, and properly stored for future use.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A phosphate rock flotation foam thickness detection rod, comprising a hollow rod (1), characterized in that: The hollow rod (1) is vertically equipped with a lifting component (2). A stop (3) is installed at the bottom end of the hollow rod (1). The lifting component (2) includes a screw (21). A circular sliding member (22) is installed at the bottom end of the screw (21). A first scale plate (11) is installed on the outer wall of the hollow rod (1). A second scale plate (23) is installed on the outer wall of the screw (21). The scale of the first scale plate (11) gradually increases vertically from bottom to top. The scale of the second scale plate (23) gradually decreases vertically from bottom to top. Arc-shaped protrusions (221) are installed on both sides of the circular sliding member (22). The inner wall of the hollow rod (1) A guide groove is provided to cooperate with the arc-shaped protrusion (221). The circular sliding member (22) can slide vertically along the inner wall of the hollow rod (1) through the cooperation of the arc-shaped protrusion (221) and the guide groove. When the hollow rod (1) is inserted into the froth layer of the flotation cell slurry, the foam resistance is small, and the lifting component (2) is not pushed due to the small resistance. The scale reading on the screw (21) does not change. When the hollow rod (1) continues to go deeper and encounters the slurry surface, the slurry resistance is large, which pushes the lifting component (2) to rise. The reading of the screw (21) extending out of the top of the hollow rod (1) is recorded as L1, and the reading of the liquid level on the hollow rod (1) is L2. At this time, the thickness of the foam layer is L2-L1.

2. The phosphate rock flotation foam thickness detection rod according to claim 1, characterized in that: The hollow rod (1) is made of PVC pipe with an inner diameter of 2cm to 3cm, a thickness of 0.3 to 0.5cm, and a length of 1.5 to 2.0m.

3. The phosphate rock flotation foam thickness detection rod according to claim 1, characterized in that: The top of the hollow rod (1) is provided with an anti-slip grip part (4), which is made of transparent plastic material.

4. The phosphate rock flotation foam thickness detection rod according to claim 1, characterized in that: The diameter of the circular slider (22) is adapted to the inner diameter of the hollow rod (1); the circular slider (22) and the screw (21) are fixed by a threaded connection.

5. The phosphate rock flotation foam thickness detection rod according to claim 1, characterized in that: The stop (3) includes an annular part (31), and a cross structure (32) is installed on the inner bottom of the annular part (31). The size of the circular sliding part (22) is adapted to the inner wall size of the annular part (31). Several limiting blocks (222) are installed on the bottom of the circular sliding part (22), and the gap between the limiting blocks (222) and the cross structure (32) is adapted.

6. The phosphate rock flotation foam thickness detection rod according to claim 5, characterized in that: The cross structure (32) of the block (3) is made of an aluminum strip with a thickness of 0.5 to 1 cm.

7. The phosphate rock flotation foam thickness detection rod according to claim 1, characterized in that: Both the first scale plate (11) and the second scale plate (23) are provided with a fluorescent layer. The fluorescent layer can clearly display the scale reading in the light-deficient environment, making it convenient for operators to read the data.

8. The phosphate flotation foam thickness detection rod according to claim 1, characterized in that: The hollow rod (1) is equipped with a horizontal bubble meter (12) on its outer wall, which is used to determine whether the hollow rod (1) is in a vertical state during the test, so as to ensure the accuracy of the foam layer thickness test data.

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