Intelligent slurry level detection device for concentration tank

Abstract

The utility model relates to an intelligent slurry level detection device for a concentration tank, which comprises a bearing frame arranged above the concentration tank, a lifting mechanism is arranged on the bearing frame, the lifting mechanism comprises a rack and a gear, the rack and the gear are meshed and mounted in a guide box, a motor is mounted on one side of the guide box, and the motor is connected with the lifting mechanism. An output shaft of the motor extends into the guide box and is connected with a gear, the bottom end of the rack is connected with a sampling pump, the sampling pump is provided with a pressure sensor, a feeding port of the sampling pump is connected with a feeding pipe, a discharging port of the sampling pump is connected with a sampling hose, and the tail end of the sampling hose is connected with an ore pulp pipe. A concentration meter is installed on the ore pulp pipe, the motor and the sampling pump are in control connection with the control module, and the pressure sensor and the concentration meter are in signal connection with the control module. The device can automatically detect the pulp level of the pulp concentration suitable for adding the flocculating agent through the control module, provides a basis for accurate adding of the flocculating agent, and improves the concentration efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of ore slurry level detection, in particular to an intelligent detection device for slurry level in a concentration tank. Background Art

[0002] Thickeners are primarily used for pulp concentration and dewatering and are widely used in mineral processing, metallurgy, chemical engineering, construction, and other fields. Solid particles in the slurry gradually settle under the action of gravity, forming a supernatant layer and a solid particle sedimentation layer within the thickener. To improve concentration efficiency, flocculants are often added to the thickener. These flocculants can form flocs, and larger flocs increase their sedimentation rate. However, at relatively low slurry concentrations, the solid particles are more dispersed and more easily interact with the flocculant, leading to the formation of larger flocs. This results in a higher floc sedimentation rate and improved concentration efficiency. Conversely, at higher slurry concentrations, larger flocs are less likely to form, resulting in a lower sedimentation rate and limited concentration efficiency. Therefore, it is necessary to determine the slurry concentration suitable for flocculant addition to provide a basis for precise flocculant dosing.

[0003] Existing pulp level detection devices such as Figure 5 As shown, a J-shaped tube made of steel or other materials is manually inserted into the concentrator tank and then removed. If slurry is present in the bend, it indicates the slurry point has been reached. This device requires repeated insertion and removal of the J-shaped tube, making the process cumbersome and leading to significant deviations in test results. Furthermore, there is the potential safety risk of the tester or personnel falling into the concentrator tank.

[0004] In this regard, the present application proposes an intelligent slurry level detection device for a thickening tank, which can automatically detect the slurry level and slurry concentration according to process requirements and output a flocculant addition signal. Utility Model Content

[0005] The utility model provides an intelligent detection device for slurry level in a concentration tank.

[0006] The specific technical solution of the utility model is: an intelligent detection device for slurry level in a thickening tank, comprising a supporting frame arranged above the thickening tank, a lifting mechanism provided on the supporting frame, the lifting mechanism comprising a rack and a gear, the rack and the gear are meshed and installed in a guide box, a motor is installed on one side of the guide box, the output shaft of the motor extends into the guide box and is connected to the gear, the bottom end of the rack is connected to a sampling pump, a pressure sensor is installed on the sampling pump, the feed port of the sampling pump is connected to a feed pipe, the discharge port of the sampling pump is connected to a sampling hose, the end of the sampling hose is connected to a slurry pipe, a concentration meter is installed on the slurry pipe, the motor and the sampling pump are control-connected to a control module, and the pressure sensor and the concentration meter are signal-connected to the control module.

[0007] Furthermore, preferably, the control module is arranged in a control cabinet, the control cabinet is provided with a control panel, and the control cabinet is arranged on a supporting frame.

[0008] Furthermore, preferably, a flushing water pipe is also included, and the water outlet of the flushing water pipe is arranged below the supporting frame and close to the rack for flushing the rack.

[0009] Furthermore, preferably, the motor is a servo motor or a stepper motor.

[0010] The beneficial effects of this utility model are as follows: the device automatically detects the slurry concentration level suitable for flocculant addition through the control module, providing a basis for accurate flocculant addition and improving concentration efficiency. Furthermore, the sampling pump is raised and lowered by a lifting mechanism, with a certain stroke, suitable for slurry level detection at multiple depths, thus providing strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of an intelligent detection device for slurry level in a thickening tank according to an embodiment;

[0012] Figure 2 for Figure 1 Schematic diagram of the installation structure of the lifting mechanism rack and gear;

[0013] Figure 3 for Figure 2 Main view of the internal structure;

[0014] Figure 4 for Figure 1 Side view of the lifting mechanism;

[0015] Figure 5 This is a front view of an existing slurry level detection device;

[0016] In the figure: 1-concentration tank, 2-carrying frame, 3-rack, 4-gear, 5-guide box, 6-motor, 7-sampling pump, 8-pressure sensor, 9-feed pipe, 10-sampling hose, 11-slurry pipe, 12-concentrator, 13-control cabinet, 14-control panel, 15-flushing water pipe. DETAILED DESCRIPTION

[0017] In order to make the technical problems and technical solutions solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0019] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0020] like Figures 1 to 4 As shown, an intelligent detection device for slurry level in a thickening tank is provided, comprising a carrier frame 2 arranged above the thickening tank 1, a lifting mechanism being provided on the carrier frame 2, the lifting mechanism comprising a rack 3 and a gear 4, the rack 3 being meshed with the gear 4 and being installed in a guide box 5, a motor 6 being installed on one side of the guide box 5, the output shaft of the motor 6 extending into the guide box 5 and being connected with the gear 4, the bottom end of the rack 3 being connected with a sampling pump 7, a pressure sensor 8 being installed on the sampling pump 7, the feed port of the sampling pump 7 being connected with a feed pipe 9, the discharge port of the sampling pump 7 being connected with a sampling hose 10, the end of the sampling hose 10 being connected with a slurry pipe 11, a concentration meter 12 being installed on the slurry pipe 11, the motor 6 and the sampling pump 7 being control-connected to a control module, which can control the start and stop of the motor 6 and the sampling pump 7, the pressure sensor 8 and the concentration meter 12 being signal-connected to the control module, for receiving detection signals of the pressure sensor 8 and the concentration meter 12, the control module being arranged in a control cabinet 13, the control cabinet 13 being provided with a control panel 14, and the control cabinet 13 being arranged on the carrier frame 2.

[0021] In addition, to precisely control the lifting speed and stopping position of the sampling pump 7, a servo motor or stepper motor is used for the motor 6. To ensure smooth lifting of the rack 3, the device also includes a flushing water pipe 15. The outlet of the flushing water pipe 15 is located below the support frame 2 near the rack 3 to flush away the slurry adhering to the rack 3.

[0022] Working Principle: The device can be set to a test frequency, such as once every hour, via control panel 14. During testing, motor 6 starts, driving gear 4 to rotate slowly, thereby slowly lowering rack 3 and the sampling pump 7 mounted at its bottom. When the pressure detected by pressure sensor X on sampling pump 7 increases significantly, it is determined that sampling pump 7 is in contact with the slurry surface. Sampling pump 7 automatically starts and draws slurry. The slurry is discharged through feed pipe 9, sampling hose 10, and slurry pipe 11. Concentrator 12 on slurry pipe 11 measures the slurry concentration and feeds this information back to the control module for processing. When the slurry concentration rises, sampling pump 7 is determined to have entered the settled slurry layer. When the slurry concentration reaches the set value, motor 6 and sampling pump 7 are shut down. The control module feeds the slurry level and concentration information back to the chemical addition system, which accurately doses flocculant to the slurry level (the specific dosage can also be determined based on the slurry concentration), allowing the flocculant to fully exert its flocculation effect and improve concentration efficiency. During the reagent addition process, the motor 6 turns over, driving the sampling pump 7 to slowly rise and leave the liquid surface of the concentration tank. At the same time, clean water is introduced into the flushing water pipe 15 to flush the rack 3 to ensure that the sampling pump 7 rises smoothly.

[0023] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent detection device for slurry level in a thickening tank, characterized in that: The invention comprises a support frame (2) arranged above a concentration tank (1), the support frame (2) being provided with a lifting mechanism, the lifting mechanism comprising a rack (3) and a gear (4), the rack (3) being meshed with the gear (4) and being installed in a guide box (5), a motor (6) being installed on one side of the guide box (5), the output shaft of the motor (6) extending into the guide box (5) and being connected to the gear (4), the bottom end of the rack (3) being connected to a sampling pump (7), the sampling pump (7) being provided with a pressure sensor (8), the feed port of the sampling pump (7) being connected to a feed pipe (9), the discharge port of the sampling pump (7) being connected to a sampling hose (10), the end of the sampling hose (10) being connected to a slurry pipe (11), the slurry pipe (11) being provided with a concentration meter (12), the motor (6) and the sampling pump (7) being control-connected to a control module, the pressure sensor (8) and the concentration meter (12) being signal-connected to the control module.

2. The intelligent detection device for slurry level in a thickening tank according to claim 1, characterized in that: The control module is arranged in a control cabinet (13), the control cabinet (13) is provided with a control panel (14), and the control cabinet (13) is arranged on a supporting frame (2).

3. The intelligent detection device for slurry level in a thickening tank according to claim 1 is characterized by: It also comprises a flushing water pipe (15), wherein a water outlet of the flushing water pipe (15) is arranged below the support frame (2) and close to the rack (3), and is used for flushing the rack (3).

4. The intelligent detection device for slurry level in a thickening tank according to claim 1, characterized in that: The motor (6) is a servo motor or a stepper motor.

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