Hydraulic conveying system for coal ash pipeline of mine

Abstract

The invention provides a hydraulic conveying system for a coal ash pipeline of a mine. The hydraulic conveying system comprises a slurry storage tank, an adjusting pump, a slurry conveying pipeline and a controller, the slurry storage tank is fixedly arranged above a mine, and the slurry storage tank is communicated with the mine through the slurry conveying pipeline; the adjusting pump is arranged in the slurry storage tank so as to reduce the viscosity of the coal ash slurry in the slurry storage tank; one end, far away from the mine, of the slurry conveying pipeline is communicated with a water conveying channel so as to form a backflushing channel for conveying coal ash slurry; and the controller is arranged on the slurry conveying pipeline to control the conduction of the water conveying pipeline and the slurry conveying pipeline. Fly ash is converted into fly ash slurry to be transported through the slurry storage pool, the caking phenomenon of the fly ash slurry is relieved under the action of the adjusting pump and the back-flushing channel, and therefore efficient transportation treatment of the fly ash is completed.

Description

Technical Field

[0001] The invention belongs to the technical field of underground fly ash transportation, and in particular relates to a hydraulic conveying system for a mine fly ash pipeline. Background Art

[0002] At present, there are two common methods for realizing the underground utilization of fly ash. One is to bag the fly ash on the ground and then transport it to the underground material use site through the mine auxiliary transportation system; the other is to pump the fly ash.

[0003] Most mines use the method of transporting fly ash in bags. This discontinuous transportation method makes fly ash utilization unreasonable and cannot achieve efficient underground utilization process. In addition, this method consumes a lot of manpower and material resources, increasing the operating costs of the mine. Due to the bag transportation, a lot of manual operation is required during the loading and unloading and handling process, which is not only inefficient, but also prone to human errors and safety hazards.

[0004] Although the pumping of fly ash in some mines has improved the continuity of transportation to a certain extent, it has also brought new problems. On the one hand, pumping will increase the energy consumption of the mine, which does not meet the requirements of energy conservation and emission reduction. On the other hand, pipe blockage and slurry leakage that may occur during the transportation process are difficult to detect in time and take effective measures. Once pipe blockage and slurry leakage occur, it is time-consuming and laborious to clear them, which seriously affects the production efficiency and construction progress of the mine. In addition, pipe blockage and slurry leakage may also pollute the mine environment and increase the cost of cleaning and maintenance.

[0005] In summary, the existing fly ash underground transportation method has many defects, and a more efficient, energy-saving and reliable transportation method is urgently needed to solve these problems. Summary of the invention

[0006] In order to solve the problem of defects in the existing underground transportation of fly ash described in the background technology, the present invention proposes the following technical solutions:

[0007] A hydraulic conveying system for fly ash pipelines in mines, comprising: a slurry storage tank, a regulating pump, a slurry delivery pipeline and a controller; the slurry storage tank is fixedly arranged above the mine, and the slurry storage tank is connected to the mine through the slurry delivery pipeline; the regulating pump is arranged in the slurry storage tank to reduce the viscosity of the fly ash slurry in the slurry storage tank; the end of the slurry delivery pipeline away from the mine is connected to a water delivery channel to form a recoil channel for conveying fly ash slurry; the controller is arranged on the slurry delivery pipeline to control the conduction between the water delivery pipeline and the slurry delivery pipeline.

[0008] Wherein, the regulating pump includes: a first stirring pump, a second stirring pump and a slurry suction pump; the first stirring pump is rotatably arranged on one side of the slurry storage tank, and the second stirring pump is rotatably arranged on the other side of the slurry storage tank; the slurry suction pump is fixedly arranged between the first stirring pump and the second stirring pump to drive the fly ash slurry in the slurry storage tank to flow in layers.

[0009] Furthermore, the first stirring pump and the second stirring pump are symmetrically distributed with respect to the slurry suction pump.

[0010] Furthermore, the slurry delivery pipeline includes a vertical section and a horizontal section which are vertically connected; the vertical section is respectively connected to the slurry storage tank and the water delivery pipeline, and the horizontal section is connected to the mine.

[0011] Furthermore, a plurality of solenoid valves electrically connected to the controller are disposed on the vertical section, and a plurality of pressure sensors electrically connected to the controller are disposed at intervals on the horizontal section.

[0012] Furthermore, a soft cushion is laid in the slurry storage tank.

[0013] Beneficial effects: The present invention converts fly ash into fly ash slurry for transportation through a slurry storage tank, and alleviates the agglomeration of the fly ash slurry under the action of a regulating pump and a recoil channel, thereby completing efficient transportation and processing of fly ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic structural diagram of a hydraulic conveying system for a mine fly ash pipeline according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present application clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0016] It should be understood that the terms "center", "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 drawings, and are only for the convenience of describing this patent and simplifying the description, 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, and therefore cannot be understood as a limitation on this patent.

[0017] Figure 1 The figure is a schematic structural diagram of a hydraulic conveying system for a mine fly ash pipeline according to an embodiment of the present invention.

[0018] Reference Figure 1 According to an embodiment of the present invention, a hydraulic conveying system for a fly ash pipeline in a mine 5 includes: a slurry storage tank 1, a regulating pump 2, a slurry delivery pipeline 3 and a controller 4. The slurry storage tank 1 is fixedly arranged above the mine 5, and the slurry storage tank 1 is connected to the mine 5 through the slurry delivery pipeline 3. The regulating pump 2 is arranged in the slurry storage tank 1 to reduce the viscosity of the fly ash slurry in the slurry storage tank 1. One end of the slurry delivery pipeline 3 away from the mine 5 is connected to the water delivery channel to form a recoil channel for conveying fly ash slurry. The controller 4 is arranged on the slurry delivery pipeline 3 to control the conduction of the water delivery pipeline 6 and the slurry delivery pipeline 3.

[0019] Specifically, the regulating pump 2 includes: a first stirring pump 21, a second stirring pump 22 and a slurry suction pump 23. The first stirring pump 21 and the second stirring pump 22 are symmetrically distributed about the slurry suction pump 23, and the first stirring pump 21 and the second stirring pump 22 are rotatably arranged on one side of the slurry storage tank 1. The first stirring pump 21 and the second stirring pump 22 respectively rotate the fly ash slurry near the bottom of the slurry storage tank 1 through the action of the paddles, thereby promoting the fly ash to dissolve quickly in the aqueous solution, and allowing the newly added fly ash to further dissolve in the fly ash slurry that has formed a slurry to avoid agglomeration. The slurry suction pump 23 sucks the fly ash slurry near the slurry storage tank 1 into the pipe through the slurry suction pipe, thereby promoting the fly ash slurry located in the upper layer to flow to the lower layer. Furthermore, in other embodiments, the fly ash slurry in the suction pipe can also be re-added to the upper layer of the slurry storage tank 1 through the pipeline design, thereby further improving the effect of interlayer flow.

[0020] Furthermore, the slurry delivery pipeline 3 includes a vertical section 31 and a horizontal section 32 which are vertically connected. One end of the vertical section 31 is funnel-shaped, and the open portion of the vertical section 31 is connected to the bottom of the slurry storage tank 1, and the other end of the vertical section 31 is connected to one end of the horizontal end. The middle of the vertical end is connected to the water delivery pipeline 6, and the other end of the horizontal section 32 is connected to the mine 5.

[0021] Specifically, a soft cushion is laid in the slurry storage tank 1 to temporarily seal the discharge port of the slurry storage tank 1 during the slurry making process. A solenoid valve 7 connected to the controller 4 is provided below the open part of the vertical section 31 and at the connection between the vertical section 31 and the water supply pipeline 6. A plurality of pressure sensors 8 connected to the controller 4 are provided at intervals on the horizontal section 32, wherein one of the pressure sensors 8 is located at the junction of the vertical section 31 and the horizontal section 32, and the remaining pressure sensors 8 are respectively located on the horizontal section 32 between the vertical section 31 and the mine 5. The controller 4 controls the conduction of the slurry supply pipeline 3 and the water supply pipeline 6 through the signal transmitted by the pressure sensor 8. When the fly ash slurry agglomerates in the slurry supply pipeline 3, thereby forming a blockage, the controller 4 controls the conduction of the recoil channel, thereby outputting high-pressure water into the slurry supply pipeline 3, thereby clearing the blocked area in the slurry supply pipeline 3.

[0022] In summary, the present invention converts fly ash into fly ash slurry for transportation through a slurry storage tank, and alleviates the agglomeration of the fly ash slurry under the action of a regulating pump and a recoil channel, thereby completing efficient transportation and processing of fly ash.

[0023] The foregoing describes certain embodiments of the invention. Other embodiments are within the scope of the following claims.

[0024] The terms "exemplary," "example," and the like used throughout this specification mean "used as an example, instance, or illustration" and do not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.

[0025] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0026] The above description of the contents of this specification is provided to enable any person of ordinary skill in the art to implement or use the contents of this specification. Various modifications to the contents of this specification will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of protection of the contents of this specification. Therefore, the contents of this specification are not limited to the examples and designs described herein, but are consistent with the widest range of principles and novel features disclosed herein.

Claims

1. A hydraulic conveying system for mine fly ash pipeline, characterized in that: include: A slurry storage tank (1), a regulating pump (2), a slurry delivery pipeline (3) and a controller (4); the slurry storage tank (1) is fixedly arranged above a mine (5), and the slurry storage tank (1) is connected to the mine (5) through the slurry delivery pipeline (3); the regulating pump (2) is arranged in the slurry storage tank (1) to reduce the viscosity of the fly ash slurry in the slurry storage tank (1); the end of the slurry delivery pipeline (3) away from the mine (5) is connected to a water delivery channel to form a recoil channel for conveying fly ash slurry; the controller (4) is arranged on the slurry delivery pipeline (3) to control the conduction between the water delivery pipeline (6) and the slurry delivery pipeline (3).

2. A hydraulic conveying system for mine fly ash pipeline according to claim 1, characterized in that: The regulating pump (2) comprises: a first stirring pump (21), a second stirring pump (22) and a slurry suction pump (23); the first stirring pump (21) is rotatably arranged on one side of the slurry storage tank (1), and the second stirring pump (22) is rotatably arranged on the other side of the slurry storage tank (1); the slurry suction pump (23) is fixedly arranged between the first stirring pump (21) and the second stirring pump (22) to drive the fly ash slurry in the slurry storage tank (1) to flow in layers.

3. A hydraulic conveying system for mine fly ash pipeline according to claim 2, characterized in that: The first stirring pump (21) and the second stirring pump (22) are symmetrically distributed with respect to the slurry suction pump (23).

4. A hydraulic conveying system for mine fly ash pipeline according to claim 2, characterized in that: The slurry conveying pipeline (3) comprises a vertical section (31) and a horizontal section (32) which are vertically connected; the vertical section (31) is respectively connected to the slurry storage tank (1) and the water conveying pipeline (6), and the horizontal section (32) is connected to the mine (5).

5. A hydraulic conveying system for mine fly ash pipeline according to claim 4, characterized in that: The vertical section (31) is provided with a plurality of solenoid valves (7) electrically connected to the controller (4), and the horizontal section (32) is provided with a plurality of pressure sensors (8) electrically connected to the controller (4) at intervals.

6. A hydraulic conveying system for mine fly ash pipeline according to claim 4, characterized in that: A soft cushion is laid in the pulp storage tank (1).

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