An on-line monitoring system for the discharge state of a cyclone

Abstract

The utility model relates to cyclone grading equipment technical field, concretely is a kind of on-line monitoring system of cyclone discharge state, is equipped with running cyclone and standby cyclone, it is characterized in that the pressure monitoring device is installed on the inlet pipe, overflow pipe or underflow pipe position of running cyclone and standby cyclone, inlet valve is installed on inlet pipe, the pressure monitoring device is connected with controller, controller is respectively connected with audible and visual alarm and inlet valve control connection, pressure data monitored by pressure monitoring device is transferred to controller, controller controls audible and visual alarm to issue alarm after analyzing data anomaly, while controller passes signal to inlet valve, closes the inlet valve of running cyclone, opens the inlet valve of standby cyclone, with simple structure, the discharge state of real-time on-line monitoring cyclone overflow and underflow, monitoring effect is good and the like advantages.

Description

Technical Field

[0001] This utility model relates to the field of hydrocyclone classification equipment technology, specifically an online monitoring system for hydrocyclone discharge status that is simple in structure, provides real-time online monitoring of the overflow and underflow discharge status of hydrocyclones, and has good monitoring effect. Background Technology

[0002] As is well known, during the operation of a hydrocyclone, solid and liquid materials are mixed and fed into the hydrocyclone by a slurry pump for separation. Under the combined force field of gravity, centrifugal force, and fluid resistance, coarse and heavy particles in the solid phase move towards the bottom outlet of the hydrocyclone, while fine and light particles move towards the overflow outlet of the hydrocyclone, thereby achieving the purpose of separating solid particles by size or weight.

[0003] In actual production, due to variations in material particle size, concentration, operating pressure, and equipment configuration, the underflow port of the hydrocyclone may experience poor discharge or even blockage. This leads to a decrease in the hydrocyclone's separation efficiency, severely impacting its separation performance requirements. Furthermore, limitations in equipment installation location and the frequency of on-site inspections make it difficult to detect hydrocyclone blockages promptly. Prolonged blockages can significantly affect the stability of subsequent operations, resulting in substantial economic losses at the site. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an online monitoring system for hydrocyclone discharge status that is simple in structure, can monitor the overflow and underflow discharge status of hydrocyclones in real time, and has good monitoring effect.

[0005] The technical solution adopted by this utility model to solve its technical problem is: An online monitoring system for the discharge status of a hydrocyclone includes a running hydrocyclone and a standby hydrocyclone. The system is characterized by pressure monitoring devices installed at the feed pipe, overflow pipe, or underflow pipe of both the running and standby hydrocyclones. A feed valve is installed on the feed pipe. The pressure monitoring devices are connected to a controller, which is connected to both an audible and visual alarm and the feed valve control. The pressure data monitored by the pressure monitoring devices is transmitted to the controller. Upon analyzing abnormal data, the controller activates the audible and visual alarm to sound an alarm. Simultaneously, the controller transmits a signal to the feed valve, closing the feed valve of the running hydrocyclone and opening the feed valve of the standby hydrocyclone.

[0006] The pressure monitoring device of this utility model includes a connecting pipe, a pressure transmitter, and an elastic rubber sleeve. The two ends of the connecting pipe are respectively connected to flanges. The pressure measuring element sensor of the pressure transmitter is fixed on the inner wall of the connecting pipe. The elastic rubber sleeve wraps around the pressure measuring element sensor of the pressure transmitter and is connected to the inner wall of the connecting pipe. The pressure of the slurry passing through the elastic rubber sleeve is transmitted to the pressure measuring element sensor of the pressure transmitter. The pressure signal sensed by the pressure measuring element sensor is transmitted to the controller through the pressure transmitter. The flanges of the connecting pipe are respectively connected to the feed pipe, overflow pipe, or underflow pipe.

[0007] The elastic rubber sleeve of this invention has a thickness of 2-4mm and a rubber rebound rate of 50-80%, which ensures the accuracy of the pressure transmitter's pressure sensing element sensor monitoring data. Excessive or insufficient rubber rebound performance will affect the detection performance of the pressure sensing element sensor.

[0008] The inner diameter of the elastic rubber sleeve of this invention is 10-20 mm larger than the inner diameter of the underflow port of the hydrocyclone. The pressure transmitter's pressure sensing element sensor is located at the upper one-third to one-half of the rubber sleeve. The pressure transmitter's pressure sensing element sensor has 6-8 sensors arranged in a ring to improve monitoring accuracy.

[0009] The elastic rubber sleeve of this invention has a mesh-like stainless steel skeleton on its inner wall, which can improve the impact resistance and abrasion resistance of the rubber sleeve and extend the service life of the elastic rubber sleeve and pressure sensor.

[0010] The stainless steel frame described in this utility model has a mesh size of 3×3mm or 5×5mm.

[0011] The stainless steel frame of this utility model includes horizontal support rings and vertical support rods. Multiple horizontal support rings and vertical support rods are provided. The horizontal support rings are arranged vertically side by side and connected by vertical support rods. The vertical support rods are designed in a wave shape. The horizontal support rings provide support and prevent impact. The wave-shaped vertical support rods play a role in elastically releasing pressure during the passage of slurry, and can transmit the pressure to the elastic rubber sleeve, and then to the pressure measuring element sensor.

[0012] The diameter of the horizontal support ring or vertical support rod described in this utility model is 1.5~2mm, which ensures strength while also providing good elasticity.

[0013] This utility model, due to the above-mentioned structure, has the advantages of simple structure, real-time online monitoring of the discharge status of hydrocyclone overflow and underflow, and good monitoring effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 yes Figure 1 A partial structural diagram of a hydrocyclone in operation or a standby hydrocyclone.

[0016] Figure 3 yes Figure 2 A partial enlarged view of the medium pressure monitoring device.

[0017] Figure 4 This is a schematic diagram of the structure of the mesh-like stainless steel skeleton provided on the inner wall of the elastic rubber sleeve. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings: As shown in the attached figure, an online monitoring system for the discharge status of a hydrocyclone includes a running hydrocyclone 1 and a standby hydrocyclone 2. The system is characterized by pressure monitoring devices 6 installed at the feed pipe 3, overflow pipe 4, or underflow pipe 5 of both the running hydrocyclone 1 and the standby hydrocyclone 2. A feed valve is installed on the feed pipe 3. The pressure monitoring devices 6 are connected to a controller 7, which is connected to an audible and visual alarm 8 and the feed valve 9. The pressure data monitored by the pressure monitoring devices 6 is transmitted to the controller 7. After analyzing the abnormal data, the controller 7 controls the audible and visual alarm 8 to issue an alarm. Simultaneously, the controller 7 transmits a signal to the feed valve 9, closing the feed valve 9 of the running hydrocyclone 1 and opening the feed valve 9 of the standby hydrocyclone 2.

[0019] Furthermore, the pressure monitoring device 6 includes a connecting pipe 10, a pressure transmitter 12, and an elastic rubber sleeve 11. Both ends of the connecting pipe 10 are connected to flanges respectively. The pressure sensing element sensor 13 of the pressure transmitter 12 is fixed on the inner wall of the connecting pipe 10. The elastic rubber sleeve 11 wraps around the pressure sensing element sensor 13 of the pressure transmitter 12 and is connected to the inner wall of the connecting pipe 10. The pressure of the slurry passing through the elastic rubber sleeve 11 is transmitted to the pressure sensing element sensor 13 of the pressure transmitter 12. The pressure signal sensed by the pressure sensing element sensor 13 is transmitted to the controller 7 through the pressure transmitter 12. The flanges of the connecting pipe are connected to the feed pipe, overflow pipe, or underflow pipe respectively.

[0020] Furthermore, the thickness of the elastic rubber sleeve 11 is 2-4mm, and the rubber rebound rate is 50-80%, which ensures the accuracy of the pressure transmitter's pressure sensing element sensor monitoring data. Excessive or insufficient rubber rebound performance will affect the detection performance of the pressure sensing element sensor.

[0021] Furthermore, the inner diameter of the elastic rubber sleeve 11 is 10-20 mm larger than the inner diameter of the underflow port of the hydrocyclone, the overflow pipe, and the feed pipe 3. The pressure sensor of the pressure transmitter 12 is located at the upper one-third to one-half of the rubber sleeve. There are 6-8 pressure sensors of the pressure transmitter arranged in a ring to improve the monitoring accuracy.

[0022] Furthermore, the inner wall of the elastic rubber sleeve 11 is provided with a mesh-like stainless steel skeleton 14, which can improve the impact resistance and abrasion resistance of the rubber sleeve and extend the service life of the elastic rubber sleeve and pressure sensor.

[0023] Furthermore, the stainless steel frame 14 has a mesh size of 3×3mm or 5×5mm.

[0024] Furthermore, the stainless steel frame 14 includes horizontal support rings 15 and vertical support rods 16. Multiple horizontal support rings 15 and vertical support rods 16 are provided. The horizontal support rings 15 are arranged vertically side by side and connected to each other by the vertical support rods 16. The vertical support rods 16 are wavy. The horizontal support rings 15 provide support and prevent impact. The wavy vertical support rods 16 play a role in elastically releasing pressure during the passage of slurry, and can transmit the pressure to the elastic rubber sleeve, and then to the pressure measuring element sensor.

[0025] Furthermore, the diameter of the transverse support ring 15 or the vertical support rod 16 is 1.5~2mm, which ensures strength while also providing good elasticity.

[0026] The overflow pressure and pressure monitoring device of the above scheme works on the principle that the ratio of the feed pressure to the overflow pressure of the hydrocyclone is 100~200 during normal operation; when there is a blockage or poor ore discharge inside the hydrocyclone underflow port, the ratio of the feed pressure to the overflow pressure of the hydrocyclone drops to 10~20. By monitoring the pressure ratio and combining it with the changes in the slurry inlet pressure of the hydrocyclone, it is possible to quickly determine whether there is an abnormality in the hydrocyclone.

[0027] The installation locations of the overflow pressure monitoring device 6 mentioned above include, but are not limited to, the connection between the overflow bend and the hydrocyclone, the highest point of the overflow bend, and the outlet of the overflow bend; the installation locations of the feed pressure monitoring device include, but are not limited to, the feed inlet of a single hydrocyclone or the top of the slurry distributor of the hydrocyclone unit.

[0028] When the hydrocyclone is running normally, the inlet pressure, overflow pressure, and underflow pressure of the hydrocyclone can be stabilized within a certain range. After a period of system recording, these pressures are recorded as normal pressures. When the hydrocyclone is operating normally, the slurry enters the hydrocyclone through the feed pipe 3. After classification, fine particles are discharged normally through the overflow pipe 4, and coarse particles are discharged normally through the underflow pipe 5. At this time, the pressure transmitter 12 at the feed pipe 3, the pressure transmitter 12 at the overflow pipe 4, and the pressure transmitter 12 at the underflow pipe 5 transmit real-time pressure data to the controller 7 of the control system. The control system analyzes the detected data in the controller 7 and confirms that the equipment is operating normally. When the bottom flow discharge is obstructed, the slurry flow entering the hydrocyclone overflows increases due to the unchanged input flow rate of the slurry pump. This causes fluctuations in the overflow port pressure, bottom flow port pressure, and inlet pressure, which are significantly different from those during normal hydrocyclone operation. After the fluctuations continue for a certain period, the audible and visual alarm system will sound an alarm to remind inspectors or operators to manually switch the blocked hydrocyclone in a timely manner. When electric or pneumatic valves are used in the production site, if no one adjusts them after the set time, the valve control system will automatically close the hydrocyclone with obstructed discharge and open the backup hydrocyclone 2 to avoid prolonged abnormal operation affecting normal production.

[0029] For example, when the underflow outlet of the hydrocyclone experiences poor discharge, the slurry discharged from the underflow pipe 5 will be in a columnar or intermittent state, indicating poor discharge. At this time, the pressure transmitter 12 of the overflow pipe 4 of the hydrocyclone will show a significant increase or drastic fluctuation compared to normal operation, while the pressure transmitter 12 of the underflow pipe 5 will show a significant decrease or drastic fluctuation compared to normal operation. Simultaneously, the pressure transmitter 12 of the feed pipe 3 will show a slight decrease or fluctuation. After the data is transmitted to the controller 7 of the control system, the system within the controller 7 detects abnormal pressure data. After a certain period of time, the controller 7 activates the audible and visual alarm device to remind operators and inspectors to check the equipment and promptly troubleshoot the abnormality. When the system detects abnormal pressure data for a certain period of time, the controller 7 can automatically open the backup hydrocyclone 2 and shut down the hydrocyclone experiencing the abnormality. This utility model, due to the above structure, has advantages such as simple structure, real-time online monitoring of the overflow and underflow discharge status of the hydrocyclone, and good monitoring effect.

Claims

1. An online monitoring system for the discharge status of a hydrocyclone, comprising a running hydrocyclone and a standby hydrocyclone, characterized in that... Pressure monitoring devices are installed at the feed pipe, overflow pipe, or underflow pipe of the operating hydrocyclone and the standby hydrocyclone. A feed valve is installed on the feed pipe. The pressure monitoring devices are connected to the controller. The controller is connected to the audible and visual alarm and the feed valve control respectively. The pressure data monitored by the pressure monitoring devices is transmitted to the controller. After the controller analyzes the abnormal data, it controls the audible and visual alarm to sound an alarm. At the same time, the controller transmits a signal to the feed valve to close the feed valve of the operating hydrocyclone and open the feed valve of the standby hydrocyclone.

2. The online monitoring system for the discharge status of a hydrocyclone according to claim 1, characterized in that... The pressure monitoring device includes a connecting pipe, a pressure transmitter, and an elastic rubber sleeve. The two ends of the connecting pipe are connected to flanges respectively. The pressure sensor of the pressure transmitter is fixed on the inner wall of the connecting pipe. The elastic rubber sleeve wraps around the pressure sensor of the pressure transmitter and is connected to the inner wall of the connecting pipe. The pressure of the slurry passing through the elastic rubber sleeve is transmitted to the pressure sensor of the pressure transmitter. The pressure signal sensed by the pressure sensor is transmitted to the controller through the pressure transmitter. The flanges of the connecting pipe are connected to the feed pipe, overflow pipe, or underflow pipe respectively.

3. The online monitoring system for the discharge status of a hydrocyclone according to claim 2, characterized in that... The thickness of the elastic rubber sleeve is 2-4mm, and the rubber rebound rate is 50-80%, which ensures the accuracy of the pressure transmitter's pressure sensing element sensor monitoring data. Excessive or insufficient rubber rebound performance will affect the detection performance of the pressure sensing element sensor.

4. The online monitoring system for the discharge status of a hydrocyclone according to claim 2, characterized in that... The inner diameter of the elastic rubber sleeve is 10-20 mm larger than the inner diameter of the underflow port of the hydrocyclone. The pressure transmitter's pressure sensing element sensor is located at the upper one-third to one-half of the rubber sleeve. There are 6-8 pressure sensing element sensors of the pressure transmitter arranged in a ring to improve monitoring accuracy.

5. The online monitoring system for the discharge status of a hydrocyclone according to claim 2, characterized in that... The inner wall of the elastic rubber sleeve is provided with a grid-like stainless steel skeleton, which can improve the impact resistance and abrasion resistance of the rubber sleeve and extend the service life of the elastic rubber tube and pressure sensor.

6. The online monitoring system for the discharge status of a hydrocyclone according to claim 5, characterized in that... The stainless steel frame has a mesh size of 3×3mm or 5×5mm.

7. The online monitoring system for the discharge status of a hydrocyclone according to claim 5, characterized in that... The stainless steel frame includes horizontal support rings and vertical support rods. Multiple horizontal support rings and vertical support rods are provided. The horizontal support rings are arranged vertically side by side and connected by vertical support rods. The vertical support rods are designed in a wave shape. The horizontal support rings provide support and prevent impact. The wave-shaped vertical support rods play a role in elastically releasing pressure during the passage of slurry, and can transmit pressure to the elastic rubber sleeve, and then to the pressure measuring element sensor.

8. The online monitoring system for the discharge status of a hydrocyclone according to claim 7, characterized in that... The diameter of the horizontal support ring or vertical support rod is 1.5~2mm, which ensures both strength and good elasticity.

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