Thickener bottom ore passing device

Abstract

The utility model provides a thickener bottom ore passing device which comprises an ore drawing pipeline arranged at the bottom of a thickener, the ore drawing pipeline comprises a vertical section and an inclined section which are communicated with each other, the vertical section of the ore drawing pipeline is communicated with an ore outlet of the thickener, an inlet electric valve is arranged at an inlet of the ore drawing pipeline, and an outlet electric valve is arranged at an outlet of the ore drawing pipeline. An outlet electric valve is arranged at an outlet of the inclined section of the ore drawing pipeline, an air storage tank and a plant water system which are communicated with the ore drawing pipeline are arranged on the side portion of the vertical section of the ore drawing pipeline, a flushing water electromagnetic valve is arranged on a pipeline between the ore drawing pipeline and the plant water system, and a pulse electromagnetic valve is arranged on a pipeline between the ore drawing pipeline and the air storage tank. Through the cooperation of high-pressure water flushing and airflow disturbance, the problem of ore blockage at the bottom of the thickener is solved, stable and smooth operation of the system is ensured, the operation is simple, and the practicability is high.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing technology and relates to a bottom ore passage device for a thickener. Background Technology

[0002] In the mineral processing field, thickeners are key dewatering equipment, and their bottom slurry discharge efficiency directly affects production continuity and operating costs. Currently, thickeners generally use the principle of gravity sedimentation to achieve solid-liquid separation. However, in long-term operation, it has been found that due to the continuous sedimentation of slurry particles, the concentration of the bottom sediment layer can reach more than 75%, thus forming a high-viscosity, dense, and compacted body. This type of compacted body is prone to accumulate and solidify near the discharge port, leading to a reduction in the flow cross-section of the discharge pipe or even complete blockage.

[0003] Currently, to address blockages at the thickener discharge port, technicians typically use a physical method of injecting high-pressure water into the discharge pipe. However, this method has significant drawbacks in practice: First, the high-pressure water flow lacks sufficient penetrating power into compacted ore bodies, only able to wash away loose surface materials and failing to effectively decompose deep, dense structures. Second, when the compacted layer thickness exceeds 30cm, the unblocking operation generally takes more than 30 minutes, and in extreme cases, it may even require stopping the machine, disassembling the pipe, and manual cleaning, severely disrupting production. Furthermore, frequent high-pressure water impacts accelerate wear on the pipe's inner wall, shortening equipment lifespan. Although technicians have attempted to introduce chemical additives such as dispersants to assist in unblocking, these agents are expensive, costing 2000-5000 yuan per treatment, and may also cause problems with subsequent chemical wastewater treatment. Therefore, there is an urgent need to develop a high-efficiency, low-consumption thickener unblocking technology to overcome these technical shortcomings. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the prior art by providing a bottom ore passage device for a thickener, which solves the problem that the existing technology cannot effectively and promptly deal with the blockage caused by ore caking at the thickener discharge port by using only high-pressure water.

[0005] Therefore, the present invention adopts the following technical solution:

[0006] A bottom ore feeding device for a thickener includes a ore discharge pipe located at the bottom of the thickener. The ore discharge pipe includes a vertical section and an inclined section, which are connected. The vertical section of the ore discharge pipe is connected to the outlet of the thickener and has an inlet electric valve at its inlet. The inclined section of the ore discharge pipe has an outlet electric valve at its outlet. A gas storage tank and a plant water system are connected to the side of the vertical section of the ore discharge pipe. A flushing water solenoid valve is installed in the pipeline between the ore discharge pipe and the plant water system, and a pulse solenoid valve is installed in the pipeline between the ore discharge pipe and the gas storage tank.

[0007] The horizontal positions of the imported electric valve, the flushing water solenoid valve, the pulse solenoid valve, and the outlet electric valve decrease sequentially.

[0008] The angle between the vertical and inclined sections of the ore discharge pipeline is 120 to 150 degrees.

[0009] The ore discharge pipeline uses a variable-diameter wear-resistant thick-walled pipe, with a vertical section diameter of 150~180mm and an inclined section diameter of 200~230mm. The total length of the ore discharge pipeline is 2~2.5m, and the wall thickness is not less than 10mm. The inlet electric valve is an electric ball valve with a pipe diameter of DN150 and an operating pressure of 0-1.6Mpa. The outlet electric valve is an electric ball valve with a pipe diameter of DN200 and an operating pressure of 0-1.6Mpa. The flushing water solenoid valve is a stainless steel solenoid valve with a pipe diameter of DN25 and an operating pressure of 0-2Mpa. The gas storage tank is a vertical gas storage tank with a gas storage pressure of 0-1.6Mpa. The pulse solenoid valve is a high-pressure gas pulse valve with a pipe diameter of DN25 and an operating pressure of 0-2Mpa.

[0010] The beneficial effects of this utility model are as follows:

[0011] This invention not only utilizes high-pressure water to flush the ore accumulation layer in the bottom discharge pipe of the thickener, initially separating the bonded ore particles and washing away some impurities, but also combines this with airflow to continue impacting the discharge pipe, causing the ore in a compacted state to vibrate violently, further breaking down the adhesion between the ore particles and allowing the loosened ore to be discharged more effectively. This invention effectively solves the problem of ore blockage at the bottom of the thickener, ensuring the stable operation of the mineral processing system. It is characterized by its ease of operation, high practicality, and broad application prospects in the mining industry. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram, 1-ore discharge pipeline, 2-inlet electric valve, 3-outlet electric valve, 4-flushing water solenoid valve, 5-air storage tank, 6-pulse solenoid valve, 7-plant water system. Detailed Implementation

[0014] The technical solution of this utility model will be described below with reference to the accompanying drawings and implementation methods.

[0015] like Figure 1 As shown, a thickener bottom ore passage device includes an ore discharge pipe 1 disposed at the bottom of the thickener. The ore discharge pipe 1 includes a vertical section and an inclined section, which are connected and the included angle between them is 120 degrees.

[0016] The vertical section of the ore discharge pipeline 1 is connected to the outlet of the thickener. An inlet electric valve 2 is installed at its inlet. An outlet electric valve 3 is installed at the outlet of the inclined section of the ore discharge pipeline 1. A gas storage tank 5 and a plant water system 7 are connected to the side of the vertical section of the ore discharge pipeline 1. A flushing water solenoid valve 4 is installed in the pipeline between the ore discharge pipeline 1 and the plant water system 7, and a pulse solenoid valve 6 is installed in the pipeline between the ore discharge pipeline 1 and the gas storage tank 5.

[0017] Specifically, the horizontal positions of the inlet electric valve 2, the flushing water solenoid valve 4, the pulse solenoid valve 6, and the outlet electric valve 3 are lowered in sequence.

[0018] The ore discharge pipeline 1 adopts a variable diameter wear-resistant thick-walled pipe, with a vertical section diameter of 150mm and an inclined section diameter of 200mm. The total length of the ore discharge pipeline 1 is 2~2.5m, and the wall thickness is not less than 10mm. The inlet electric valve 2 adopts an electric ball valve with a pipe diameter of DN150 and an operating pressure of 0-1.6Mpa. The outlet electric valve 3 adopts an electric ball valve with a pipe diameter of DN200 and an operating pressure of 0-1.6Mpa. The flushing water solenoid valve 4 adopts a stainless steel solenoid valve with a pipe diameter of DN25 and an operating pressure of 0-2Mpa. The gas storage tank 5 adopts a vertical gas storage tank with a gas storage pressure of 0-1.6Mpa. The pulse solenoid valve 6 adopts a high-pressure gas pulse valve with a pipe diameter of DN25 and an operating pressure of 0-2Mpa.

[0019] The working principle of this utility model is as follows:

[0020] When the slurry at the bottom of the thickener is slightly compacted, clean water at a pressure of 400 kPa is introduced into the discharge pipe to disturb the compacted slurry and allow it to settle. When the compaction at the bottom of the thickener is severe, pulsed high-pressure gas is introduced into the discharge pipe to disturb the compacted slurry and allow it to settle. After the slurry has loosened, clean water is introduced to clear the compacted slurry.

[0021] The above processing procedure can be completed using PLC control technology. That is, the PLC controller is electrically connected to the inlet electric valve 2, the flushing water solenoid valve 4, the pulse solenoid valve 6, and the outlet electric valve 3 respectively. The operator only needs to set the mild blockage treatment button and the severe blockage treatment button in the PLC controller and press the different buttons as needed.

[0022] When ore discharge is obstructed due to ore blockage in the thickener, press the "Mild Blockage Handling" button to start the mild blockage handling procedure:

[0023] Step 1: Open the inlet electric valve 2. Step 2: Close the outlet electric valve 3. Step 3: Open the flushing water solenoid valve 4. Step 4: After timing for 60 seconds, open the outlet electric valve 3. Step 5: After timing for 5 seconds, close the flushing water solenoid valve 4. Step 6: Observe the ore discharge from the thickener outlet. If the ore discharge is normal, it is considered that the mild ore blockage treatment operation has been completed.

[0024] If the thickener still cannot output ore normally after the mild blockage treatment is completed, it is considered a severe blockage. Press the severe blockage treatment button to start the severe blockage treatment program:

[0025] First, open the inlet electric valve 2. Second, close the outlet electric valve 3. Third, drive the pulse solenoid valve 6 to operate 5 times, with a 3-second interval between each operation. Fourth, repeat the above operations until a mild blockage occurs, and continue processing according to the mild blockage handling procedure until the ore passage is completed.

Claims

1. A bottom draw arrangement for a thickener, characterized in that The application relates to a thickener ore discharging pipeline (1) arranged at the bottom of a thickener, wherein the thickener ore discharging pipeline (1) comprises a vertical section and an inclined section, and the two sections are in communication; the vertical section of the thickener ore discharging pipeline (1) is communicated with a thickener ore outlet, and an inlet electric valve (2) is arranged at the inlet of the thickener ore discharging pipeline (1); an outlet electric valve (3) is arranged at the outlet of the inclined section of the thickener ore discharging pipeline (1); a gas storage tank (5) and a plant water system (7) are arranged at the side of the vertical section of the thickener ore discharging pipeline (1) and communicated with the vertical section; a flushing water electromagnetic valve (4) is arranged in the pipeline between the thickener ore discharging pipeline (1) and the plant water system (7), and a pulse electromagnetic valve (6) is arranged in the pipeline between the thickener ore discharging pipeline (1) and the gas storage tank (5).

2. A bottom passage device for a thickener according to claim 1, characterized in that The horizontal positions of the inlet electric valve (2), the flushing water electromagnetic valve (4), the pulse electromagnetic valve (6) and the outlet electric valve (3) are sequentially lowered.

3. A bottom draw arrangement for a thickener according to claim 1, wherein, The included angle between the vertical section and the inclined section of the thickener ore discharging pipeline (1) is 120-150 degrees.

4. A bottom draw arrangement for a thickener according to claim 1, wherein The thickener ore discharging pipeline (1) is made of a variable-diameter wear-resistant thick-wall pipe, the pipe diameter of the vertical section is 150-180 mm, the pipe diameter of the inclined section is 200-230 mm, the total length of the thickener ore discharging pipeline (1) is 2-2.5 m, and the wall thickness is not less than 10 mm.

5. A bottom draw arrangement for a thickener according to claim 1, wherein, The inlet electric valve (2) is an electric ball valve with a pipe diameter of DN150 and an operating pressure of 0-1.6 Mpa.

6. A thickener bottom draw arrangement according to claim 1 wherein, The outlet electric valve (3) is an electric ball valve with a pipe diameter of DN200 and an operating pressure of 0-1.6 Mpa.

7. A thickener underflow discharge apparatus as claimed in claim 1 wherein, The flushing water electromagnetic valve (4) is a stainless steel electromagnetic valve with a pipe diameter of DN25 and an operating pressure of 0-2 Mpa.

8. A thickener underflow discharge apparatus as claimed in claim 1 wherein, The gas storage tank (5) is a vertical gas storage tank with a gas storage pressure of 0-1.6 Mpa.

9. A thickener underflow discharge apparatus as claimed in claim 1 wherein, The pulse electromagnetic valve (6) is a high-pressure gas pulse valve with a pipe diameter of DN25 and an operating pressure of 0-2 Mpa.

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