An overflow coarse monitoring device for a hydrocyclone and a hydrocyclone

Abstract

This utility model relates to the field of material grading and desliming technology, and discloses an overflow coarseness monitoring device for a hydrocyclone and a hydrocyclone, including: an overflow main pipe, an overflow branch pipe, a return pipe, a detection box, a sieve plate, a sensor, and an alarm; the overflow main pipe includes a bend, which includes a transverse section and a vertical section connected sequentially from the upstream end to the downstream end; the two ends of the overflow branch pipe are respectively connected to the transverse section of the bend and the top of the detection box; the two ends of the return pipe are respectively connected to the vertical section of the overflow main pipe and the bottom of the detection box; the sieve plate is set in the detection box, and a sensor is installed on the detection box, which is communicatively connected to the alarm; this application has a simple structure and can effectively monitor the overflow coarseness phenomenon of the hydrocyclone and provide an alarm indication.

Description

Technical Field

[0001] This utility model relates to the field of material classification and desliming technology, specifically to an overflow coarseness monitoring device for a hydrocyclone and a hydrocyclone. Background Technology

[0002] Hydrocyclones are widely used in many industrial fields such as ore processing, mineral classification, and chemical separation as a highly efficient classifying device due to their simple structure, large processing capacity, and low energy consumption. During the operation of hydrocyclones, overflow and coarse particle runoff is one of the key issues affecting the separation efficiency of the equipment and the stability of downstream processes. Once overflow and coarse particle runoff occurs, it means that coarser particles enter the overflow product without effective classification, which may lead to blockage of downstream equipment, reduced processing efficiency, and even affect the quality of the final product. Therefore, timely detection of hydrocyclone overflow and coarse particle runoff is of great significance for ensuring the stable operation of the production process.

[0003] Currently, various known online particle size analysis devices can promptly detect overflow and coarsening phenomena in hydrocyclones and provide alarm functions. These online particle size analysis devices generally employ ultrasonic or laser diffraction principles for online detection. The ultrasonic detection principle analyzes particle size distribution based on the attenuation and scattering characteristics of ultrasound waves propagating in media with particles of different sizes; the laser diffraction principle utilizes the diffraction phenomenon generated when a laser irradiates a particle group, and infers particle size information by receiving and analyzing the angle and intensity distribution of the diffracted light. However, existing online particle size analysis devices based on these principles have significant shortcomings. Their complex structures involve multiple systems such as precision optics, electronics, and signal processing, resulting in high costs for equipment research and development, production, and maintenance.

[0004] Furthermore, the structural parameters of the hydrocyclone remain largely unchanged after installation, with only minor adjustments to the classification particle size in the operating parameters. When the properties of the classified material are stable, the maximum overflow particle size fluctuation is small. Downstream equipment only needs to know if there is severe oversize phenomenon, without requiring precise particle size data. Existing online particle size detection equipment has a certain degree of functional redundancy and cannot meet this practical application requirement. Therefore, developing a detection technology or device that is simple in structure, low in cost, and can effectively detect severe oversize phenomenon in hydrocyclone overflow has become an urgent problem to be solved in current industrial production. Utility Model Content

[0005] The purpose of this utility model is to provide a simple structure for monitoring the overflow and coarseness phenomenon of hydrocyclones, as well as a hydrocyclone.

[0006] To achieve the above objectives, this application provides an overflow coarsening monitoring device for a hydrocyclone. The hydrocyclone includes an overflow main pipe, which includes a bend in the pipe. The bend includes a transverse section and a vertical section connected sequentially from the upstream end to the downstream end. An overflow port is provided on the transverse section and is located on the lower side of the outer periphery of the transverse section. A return port is provided on the vertical section. The overflow coarsening monitoring device includes: an overflow branch pipe, a return pipe, a detection box, a sieve plate, a sensor, and an alarm.

[0007] The sieve plate is disposed inside the detection box and divides the detection box into an upper chamber and a lower chamber arranged sequentially from top to bottom. The top of the detection box has an inlet that communicates with the upper chamber, and the bottom of the detection box has an outlet that communicates with the lower chamber.

[0008] The two ends of the overflow branch pipe are respectively connected to the overflow port and the inlet, and the two ends of the return pipe are respectively connected to the outlet and the return port;

[0009] The sensor is a liquid level sensor installed on the detection box, with the detection end of the liquid level sensor extending into the upper chamber; or, the sensor is a flow sensor installed on the return pipe, with the detection end of the flow sensor extending into the return pipe.

[0010] The sensor is communicatively connected to the alarm.

[0011] As a preferred technical solution, the sensor is a liquid level sensor. The detection end of the liquid level sensor includes two probes. The two probes extend into the upper chamber from top to bottom at intervals. When the space between the two probes is filled with conductive liquid, a conductive circuit is formed between the two probes.

[0012] As a preferred technical solution, the signal detector further includes: the sensor is a flow sensor, and the inner diameter of the return pipe is smaller than the inner diameter of the overflow branch pipe.

[0013] As a preferred technical solution, the lower chamber is funnel-shaped with its inner diameter gradually decreasing from top to bottom.

[0014] As a preferred technical solution, the alarm device for the hydrocyclone further includes a valve, which is located on the overflow branch pipe and is used to control the opening and closing of the overflow branch pipe.

[0015] As a preferred technical solution, the diameter of the overflow branch pipe is d1, wherein 30mm≤d1≤50mm.

[0016] As a preferred technical solution, the overflow branch pipe and the return pipe have the same diameter.

[0017] As a preferred technical solution, the height of the detection box is h, the height of the upper chamber is d2, and h / 2 < d2 < 2h / 3.

[0018] As a preferred technical solution, the opening size of the sieve plate is d3, wherein 1mm≤d3≤1.5mm.

[0019] In addition, this utility model also provides a hydrocyclone, including the overflow and coarseness monitoring device for the hydrocyclone as described above.

[0020] The overflow and coarseness monitoring device for hydrocyclones provided by the above technical solution has the following advantages compared with the prior art: Fluid in the transverse section of the overflow main pipe enters the upper chamber of the detection box through the overflow branch pipe. Small particles in the fluid fall into the lower chamber of the detection box through the sieve plate's openings and then flow back to the vertical section of the overflow main pipe through the return pipe. Large particles in the fluid, due to their large size, cannot pass through the sieve plate's openings and remain on the sieve plate. When a certain number of large particles accumulate above the sieve plate, the sieve plate's openings are gradually blocked. As the liquid level above the sieve plate gradually rises until it touches the detection end of the level sensor extending into the upper chamber, the level sensor sends a signal to the alarm; or a flow sensor installed on the return pipe monitors the flow rate of the fluid in the return pipe in real time and sends a signal back to the alarm. When the alarm receives the signal from the level sensor, or when the alarm collects the flow data fed back by the flow sensor and calculates the flow rate change, the alarm sounds when the change exceeds 5%, alerting staff that an overflow and coarseness phenomenon has occurred in the overflow main pipe. The alarm device has a simple overall structure and can effectively detect overflow and coarseness in hydrocyclones. Attached Figure Description

[0021] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are intended only to conceptually represent the composition or structure of the described objects and may contain exaggerated representations, and the drawings are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0024] The components are as follows: 1. Bend; 11. Horizontal section; 110. Overflow port; 12. Vertical section; 120. Return port; 2. Overflow branch pipe; 3. Return pipe; 4. Detection box; 41. Upper chamber; 42. Lower chamber; 43. Inlet; 44. Outlet; 5. Sieve plate; 6. Sensor; 61. Liquid level sensor; 610. Probe; 62. Flow sensor; 7. Valve. Detailed Implementation

[0025] Preferred embodiments of this application will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary, and should not be construed as limiting the scope of protection of this application.

[0026] First, it should be noted that the directions such as top, bottom, upward, and downward mentioned in this article are defined relative to the directions in the various accompanying figures. They are relative concepts and therefore can change depending on their different positions and practical applications. Therefore, these or other directions should not be interpreted as restrictive terms.

[0027] It should be noted that the term "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude the plural.

[0028] Furthermore, it should be noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the accompanying drawings, can still be combined among these technical features (or their equivalents) to obtain other embodiments of this application not directly mentioned herein.

[0029] It should also be understood that while the terms "first," "second," etc., are used in this document to describe various types of information, this information should not be limited to these terms, which are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] Example 1

[0032] Please see Figure 1This application provides an overflow and coarseness monitoring device for a hydrocyclone, comprising an overflow main pipe, a bend 1, and a transverse section 11 and a vertical section 12 connected sequentially from upstream to downstream. An overflow port 110 is provided on the transverse section 11, located below the outer periphery of the transverse section 11. A return port 120 is provided on the vertical section 12. The overflow and coarseness monitoring device includes an overflow branch pipe 2, a return pipe 3, a detection box 4, a sieve plate 5, a sensor 6, and an alarm.

[0033] The sieve plate 5 is disposed inside the detection box 4 and divides the detection box 4 into an upper chamber 41 and a lower chamber 42 arranged sequentially from top to bottom. The top of the detection box 4 has an inlet 43 that communicates with the upper chamber 41, and the bottom of the detection box 4 has an outlet 44 that communicates with the lower chamber 42.

[0034] The two ends of the overflow branch pipe 2 are respectively connected to the overflow port 110 and the inlet 43, and the two ends of the return pipe 3 are respectively connected to the outlet 44 and the return port 120.

[0035] The sensor 6 is a liquid level sensor 61 installed on the detection box 4, and the detection end of the liquid level sensor 61 extends into the upper chamber 41;

[0036] The sensor 6 is communicatively connected to the alarm.

[0037] In this embodiment, the fluid in the transverse section 11 of the overflow pipe bend 1 is led out to the detection tank 4 by the overflow branch pipe 2. The sieve plate 5 in the detection tank 4 traps oversized particles above it, while the liquid and small particles enter the lower chamber 42 of the detection tank 4 and return to the vertical section 12 of the bend 1 via the return pipe 3. As oversized particles accumulate above the sieve plate 5, the pores of the sieve plate 5 are gradually blocked, and the liquid level in the upper chamber 41 of the detection tank 4 gradually rises. A liquid level sensor 61 is installed on the detection tank 4, with its detection end located in the upper chamber 41. As the liquid level in the upper chamber 41 gradually rises until it contacts the detection end of the liquid level sensor 61, the liquid level sensor 61 sends a signal to the alarm, which then sounds an alarm to alert staff that a runoff has occurred in the overflow pipe. This device has a simple overall structure, is easy to manufacture, and has a low cost. It can monitor and provide timely feedback on the overflow and coarsening phenomenon of hydrocyclones in real time.

[0038] It is worth noting that the overflow port 110 on the transverse section 11 is preferably located on the lower side of the outer periphery of the pipe body in this application. On the one hand, if the overflow port 110 is set too high, it will be easy to fail to sample, that is, the fluid cannot flow into the overflow branch pipe 2. On the other hand, if the overflow port 110 is located directly below the outer periphery of the overflow main pipe, the solid particles contained in the fluid in the overflow main pipe will naturally settle at the bottom of the pipe body, resulting in an excessively high concentration of fluid particles leading out of the overflow branch pipe 2, which will affect the detection results.

[0039] In some embodiments, the sensor 6 is a liquid level sensor 61, and the detection end of the liquid level sensor 61 includes two probes 610. The two probes 610 extend into the upper chamber 41 from top to bottom at intervals. When the space between the two probes 610 is filled with conductive liquid, a conductive circuit is formed between the two probes 610.

[0040] In this embodiment, when the liquid level in the upper chamber 41 rises to a certain level, the space between the two probes 610 becomes filled with liquid. Based on the conductivity of the liquid, a circuit is formed between the probes 610, sending a signal to the alarm to achieve the alarm function. Alternatively, the liquid level sensor 6 in this application can also be made using the principle of a float switch, the principle of ultrasonic liquid level detection, etc., as long as it can effectively detect the rise in liquid level in the upper chamber 41 caused by blockage.

[0041] In some embodiments, the lower chamber 42 is funnel-shaped with its inner diameter gradually decreasing from top to bottom. On the one hand, the outlet 44 at the bottom of the funnel directly connects to the return pipe 3, forming a smooth material discharge path; on the other hand, the funnel-shaped structure allows the liquid to flow in an orderly manner from top to bottom within the detection chamber 4, reducing bottom eddies or stagnant areas, ensuring that the fluid contacted by the detection end of the sensor 6 is representative, avoiding deviations in detection data due to uneven local concentrations, and enabling the sensor 6 to more accurately capture changes in coarse particle content. Furthermore, the inclined funnel wall reduces the possibility of material accumulation. When coarse particles settle to the bottom, the component of gravity will cause the particles to slide along the funnel wall towards the opening, preventing blockage of the detection chamber 4 due to long-term accumulation, and reducing the frequency of manual cleaning.

[0042] In some embodiments, the overflow coarsening monitoring device for the hydrocyclone further includes a valve 7, which is located on the overflow branch pipe 2 and is used to control the opening and closing of the overflow branch pipe 2. When overflow coarsening is detected, the valve 7 needs to be closed to clean the inside of the detection box 4 to facilitate the next detection operation.

[0043] In some embodiments, the diameter of the overflow branch pipe 2 is d1, wherein 30mm≤d1≤50mm. The diameter of the overflow branch pipe 2 should not be too large or too small. If it is too small, it will easily lead to blockage of the overflow branch pipe 2. If it is too large, it will easily lead to excessive flow of fluid from the overflow main pipe into the overflow branch pipe 2, resulting in more particulate matter carried by the fluid, making the fluid sample entering the overflow branch pipe 2 unrepresentative and affecting the test results.

[0044] In some embodiments, the overflow branch pipe 2 and the return pipe 3 have the same diameter. Setting the overflow branch pipe 2 and the return pipe 3 to have the same diameter is mainly to eliminate sudden changes in flow rate or pressure caused by diameter changes, reduce the cost of fittings and maintenance difficulty, and improve the synchronization of the system's dynamic response.

[0045] In some embodiments, the height of the detection chamber 4 is h, and the height of the upper chamber 41 is d2, wherein h / 2 < d2 < 2h / 3. By optimizing the space allocation within the detection chamber 4, the fluid dynamics performance and equipment functional requirements are balanced. On the one hand, sufficient upper space is ensured to prevent fluid from impacting the screen plate 5 and causing overload. If d2 is too small, the liquid surface height formed above the screen plate 5 will be too large, easily causing severe liquid surface fluctuations due to feed fluctuations or screening vibrations, which may lead to the liquid surface touching the level sensor 61 and being mistakenly judged as overflow and coarse flow. On the other hand, optimizing the screening space distribution improves screening efficiency and accuracy. Increasing the effective screening height increases the probability of fine particles passing through the screen holes and avoids excessive accumulation of material on the screen.

[0046] In some embodiments, the aperture size of the sieve plate 5 is d3, where 1mm ≤ d3 ≤ 1.5mm. Since the classifying particle size of a moisture-grading hydrocyclone is generally no more than 0.5mm, and the feed particle size of a hydrocyclone is generally no more than 3mm, it is preferable to set the aperture size of the sieve plate 5 to 1-1.5mm. If the feed to the hydrocyclone contains a large amount of material larger than 0.5mm, the aperture size of the sieve plate 5 can be appropriately increased, but it cannot exceed the maximum particle size of the feed to the hydrocyclone.

[0047] In addition, this utility model also provides a hydrocyclone, including the overflow and coarseness monitoring device for the hydrocyclone as described above. Using this hydrocyclone, the overflow and coarseness phenomenon of the overflow main pipe during the overflow process can be fed back in a timely manner. The overall structure is simple and the production and maintenance costs are low.

[0048] Example 2

[0049] This embodiment provides a hydrocyclone. Except that the sensor 6 is a flow sensor 62 installed on the return pipe 3, and the detection end of the flow sensor 62 extends into the return pipe 3, the rest of the structure is the same as that of Embodiment 1, and will not be described in detail here.

[0050] In this embodiment, the flow rate of the fluid passing through the sieve plate 5 and flowing into the return pipe 3 is read in real time by the flow sensor 62, and the acquired fluid flow rate data is fed back to the alarm. The alarm calculates the change in flow rate. When the alarm detects that the change in data exceeds 5%, it determines that the hydrocyclone has overflowed and is coarsening, and the alarm sounds an alarm.

[0051] In some embodiments, the sensor 6 is a flow sensor 62, and the inner diameter of the return pipe 3 is smaller than the inner diameter of the overflow branch pipe 2. The reason for setting the inner diameter of the return pipe 3 to be smaller than that of the overflow branch pipe 2 is that when the inner diameter of the overflow branch pipe 2 is larger, the pressure of the fluid entering the detection box 4 is lower; when the inner diameter of the return pipe 3 is smaller, the fluid experiences an acceleration effect due to cross-sectional contraction as it passes through, utilizing the fluid's own kinetic energy to compensate for static pressure loss. This helps to push the fluid back to the overflow main pipe, avoiding poor backflow or even reverse flow caused by insufficient pressure difference between the detection box 4 and the overflow main pipe 2.

[0052] In summary, the overflow and coarseness monitoring device for a hydrocyclone and the hydrocyclone provided in this embodiment, by installing the overflow and coarseness monitoring device on the overflow main pipe, draws out a portion of the fluid inside the overflow main pipe for sampling and monitoring. When overflow and coarseness occur, an alarm signal is issued to remind the operator that the hydrocyclone is overflowing and coarseness has occurred. This application has a simple structure, low cost, and can meet the requirement of real-time detection of overflow and coarseness in hydrocyclones.

[0053] This specification discloses the present application with reference to the accompanying drawings and also enables those skilled in the art to implement the application, including making and using any device or system, employing suitable materials, and using any combination of methods. The scope of this application is defined by the claimed technical solution and includes other instances that would occur to those skilled in the art. Such other instances shall be considered to fall within the scope of protection defined by the claimed technical solution, provided that they include structural elements that are not different from the literal language of the claimed technical solution, or contain equivalent structural elements that are not substantially different from the literal language of the claimed technical solution.

Claims

1. An overflow underflow monitoring device for a hydrocyclone, the hydrocyclone comprising an overflow main, the overflow main comprising a bend section, the bend section comprising a transverse section and a vertical section connected in series from an upstream end to a downstream end, characterised in that, An overflow port is provided on the transverse section, and the overflow port is located on the lower side of the outer periphery of the transverse section. A return port is provided on the vertical section. The overflow coarseness monitoring device includes: an overflow branch pipe, a return pipe, a detection box, a sieve plate, a sensor, and an alarm. The sieve plate is disposed inside the detection box and divides the detection box into an upper chamber and a lower chamber arranged sequentially from top to bottom. The top of the detection box has an inlet that communicates with the upper chamber, and the bottom of the detection box has an outlet that communicates with the lower chamber. The two ends of the overflow branch pipe are respectively connected to the overflow port and the inlet, and the two ends of the return pipe are respectively connected to the outlet and the return port; The sensor is a liquid level sensor installed on the detection box, with the detection end of the liquid level sensor extending into the upper chamber; or, the sensor is a flow sensor installed on the return pipe, with the detection end of the flow sensor extending into the return pipe. The sensor is communicatively connected to the alarm.

2. The overflow underflow monitoring device for a hydrocyclone of claim 1, wherein, The sensor is a liquid level sensor, and the detection end of the liquid level sensor includes two probes. The two probes extend into the upper chamber from top to bottom at intervals. When the space between the two probes is filled with conductive liquid, a conductive circuit is formed between the two probes.

3. The overflow underflow monitoring device for a hydrocyclone of claim 1, wherein, The sensor is a flow sensor, and the inner diameter of the return pipe is smaller than the inner diameter of the overflow branch pipe.

4. The overflow underflow monitoring device for a hydrocyclone of claim 1, wherein, The lower chamber is funnel-shaped with its inner diameter gradually decreasing from top to bottom.

5. The overflow underflow monitoring device for a hydrocyclone of claim 1, wherein, It also includes a valve, which is located on the overflow branch pipe and is used to control the opening and closing of the overflow branch pipe.

6. The overflow underflow monitoring device for a hydrocyclone of claim 1, wherein, The diameter of the overflow branch pipe is d1, where 30mm≤d1≤50mm.

7. The overflow underflow monitoring device for a hydrocyclone of claim 6, wherein, The overflow branch pipe has the same diameter as the return pipe.

8. The overflow underflow monitoring device for a hydrocyclone of claim 1, wherein, The height of the detection box is h, and the height of the upper chamber is d2, where h / 2 < d2 < 2h / 3.

9. The overflow underflow monitoring device for a hydrocyclone of claim 1, wherein, The aperture size of the sieve plate is d3, where 1mm≤d3≤1.5mm.

10. A hydrocyclone characterised in that include: The overflow monitoring device for hydrocyclones as described in any one of claims 1-9.

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