阅读说明：本技术 一种带筛的节能型粗颗粒煤浆罐及其节能方法 (Energy-saving coarse-particle coal slurry tank with sieve and energy-saving method thereof ) 是由 王铁力 李用芝 田达理 李书兴 辛德林 路云 冯斌 陈益滨 郭欢 黄孟 张陶清 于 2019-09-20 设计创作，主要内容包括：一种带筛的粗颗粒煤浆罐,包括罐体,所述罐体的上方设有起重机械设备,所述,起重机械设备的下端吊有筛篮,所述筛篮的中部设有搅拌器；搅拌器的搅拌轴穿过筛篮的底面通道孔,搅拌器的搅拌叶片位于筛篮底面的下方；筛篮的底部设有放料装置；所述罐体的底部一侧设有和罐体相通的导出管,导出管和离心泵的进水口相通,离心泵的出水口和导入管相通,导入管的上端越过罐体上端后伸入筛篮内；所述罐体内还设有浓度计、液位计；可广泛应用于各种级配的粗颗粒管道输送项目的煤浆储存系统,避免了搅拌器连续运转增加的能耗,避免了搅拌器停机再启动引起的桨叶折损,避免了由于搅拌器搅拌在罐底产生堆积角形成沉淀而造成煤浆的浪费。(A coarse-particle coal slurry tank with a sieve comprises a tank body, wherein a hoisting mechanical device is arranged above the tank body, a sieve basket is hung at the lower end of the hoisting mechanical device, and a stirrer is arranged in the middle of the sieve basket; a stirring shaft of the stirrer penetrates through a channel hole in the bottom surface of the screen basket, and a stirring blade of the stirrer is positioned below the bottom surface of the screen basket; the bottom of the screen basket is provided with a discharging device; a delivery pipe communicated with the tank body is arranged on one side of the bottom of the tank body, the delivery pipe is communicated with a water inlet of the centrifugal pump, a water outlet of the centrifugal pump is communicated with the delivery pipe, and the upper end of the delivery pipe passes through the upper end of the tank body and then extends into the screen basket; a concentration meter and a liquid level meter are also arranged in the tank body; the system can be widely applied to coal slurry storage systems of various graded coarse particle pipeline conveying projects, avoids the energy consumption increased by continuous operation of the stirrer, avoids blade breakage caused by shutdown and restart of the stirrer, and avoids the waste of coal slurry caused by the formation of sediment due to the fact that the stirrer stirs at a stacking angle generated at the bottom of the tank.)

1. The utility model provides a coarse grain coal slurry tank of area sieve, includes jar body (5), its characterized in that: a hoisting mechanical device (8) is arranged above the tank body (5), a screen basket (4) is hung at the lower end of the hoisting mechanical device (8), and a stirrer (10) is arranged in the middle of the screen basket (4); a stirring shaft of the stirrer (10) penetrates through a bottom surface channel hole (16) of the screen basket (4), and a stirring blade of the stirrer (10) is positioned below the bottom surface of the screen basket (4); the bottom of the screen basket (4) is provided with a discharging device; a delivery pipe (2) communicated with the tank body (5) is arranged on one side of the bottom of the tank body (5), the delivery pipe (2) is communicated with a water inlet of a centrifugal pump (1), a water outlet of the centrifugal pump (1) is communicated with a delivery pipe (3), and the upper end of the delivery pipe (3) crosses the upper end of the tank body (5) and then extends into the screen basket (4); a concentration meter (13) and a liquid level meter (14) are also arranged in the tank body (5).

2. The screened coarse particle slurry tank of claim 1, wherein: a plurality of steel strips (9) are arranged in the circumferential direction of the upper end of the screen basket (4), steel rings (6) are arranged at the top ends of the steel strips (9), and the hoisting mechanical equipment (8) is fastened with the steel rings (6) through steel wire ropes (7).

3. The screened coarse particle slurry tank of claim 1, wherein: the material placing device is a cover plate (11) arranged at the bottom of the tank body (5), and the cover plate (11) is provided with a servo oil cylinder capable of controlling the cover plate to open and close.

4. The energy saving method of the screened coarse particle coal slurry tank according to claim 1, characterized in that:

when the coal slurry tank does not perform slurry pumping operation for a long time, the screen basket (4) is put down through the hoisting mechanical equipment (8), the stirrer is stopped, most of the coal slurry is sunk into the screen basket (4) at the moment, the coal slurry is prevented from being deposited on the paddle of the stirrer, and the paddle can be prevented from being damaged due to restarting; starting the centrifugal pump (1), and pumping out the residual small part of coal slurry at the bottom of the tank body (5) into the screen basket (4) through the guide-in pipe (3) of the guide-out pipe (2); observing the data of the concentration meter (13), stopping the centrifugal pump (1) when the concentration meter displays that the mass concentration is below 10 percent, wherein at the moment, a small amount of residual coal slurry is not enough to form a precipitation dead angle, the blade can not be damaged, and the energy consumption is saved;

when the coal slurry tank needs slurry pumping operation, if the liquid level detected by the liquid level meter (14) is lower than the height of the stirrer blade, slowly opening the discharging device until the liquid level is higher than the height of the stirrer blade, and closing the discharging device; then starting the stirrer (10), enabling the coal slurry in the screen basket (4) to continuously flow out of the screen holes of the screen basket (4) under the disturbance effect of the rotation of the paddle on water flow, simultaneously starting the centrifugal pump (1), pumping the low-concentration coal slurry in the tank body (5) into the screen basket (4), impacting coarse coal particles in the screen basket (4), and accelerating the outflow of the coal slurry in the screen basket (4); when the concentration meter shows that the concentration change is not big and be less than the design concentration, slowly rise the basket with jack-up mechanical equipment, the concentration meter shows that concentration constantly becomes, when the concentration meter shows that concentration designs the concentration for the operation of drawing thick liquid, stops jack-up mechanical equipment, opens pump (15), and the storage tank gets into normal operation procedure of drawing thick liquid immediately.

Technical Field

The invention relates to a coal slurry tank, in particular to an energy-saving coarse particle coal slurry tank with a sieve and an energy-saving method thereof.

Background

The coal slurry tank is a device for storing coal slurry, the traditional coal slurry tank can generate coal slurry deposition hardening when not used for a long time and is difficult to extract, so a stirrer is required to be used for stirring in the extraction period, after the extraction operation is finished, if the stirrer is stopped, the coal slurry sinks, the blades are fully piled with the coal slurry, the blades are overloaded when the stirrer is started next time, the blades are broken, but the stirrer is used for stirring all the time in the non-extraction period, and unnecessary energy consumption is generated.

Disclosure of Invention

The invention aims to solve the problem that unnecessary energy consumption is generated when a stirrer in the prior art is used for stirring all the time in a non-extraction period.

The technical scheme adopted by the invention is as follows: a coarse-particle coal slurry tank with a sieve comprises a tank body, wherein a hoisting mechanical device is arranged above the tank body, a sieve basket is hung at the lower end of the hoisting mechanical device, and a stirrer is arranged in the middle of the sieve basket; a stirring shaft of the stirrer penetrates through a channel hole in the bottom surface of the screen basket, and a stirring blade of the stirrer is positioned below the bottom surface of the screen basket; the bottom of the screen basket is provided with a discharging device; a delivery pipe communicated with the tank body is arranged on one side of the bottom of the tank body, the delivery pipe is communicated with a water inlet of the centrifugal pump, a water outlet of the centrifugal pump is communicated with the delivery pipe, and the upper end of the delivery pipe passes through the upper end of the tank body and then extends into the screen basket; a concentration meter and a liquid level meter are also arranged in the tank body.

Furthermore, a plurality of steel strips are arranged on the upper end of the screen basket in the circumferential direction, steel rings are arranged at the top ends of the steel strips, and the hoisting mechanical equipment is used for fixing the steel rings through steel wire ropes.

Furthermore, the material placing device is a cover plate arranged at the bottom of the tank body, and the cover plate is provided with a servo oil cylinder capable of controlling the cover plate to open and close.

The invention has the advantages and characteristics that:

the system can be widely applied to coal slurry storage systems of various graded coarse particle pipeline conveying projects, avoids the energy consumption increased by continuous operation of the stirrer, avoids blade breakage caused by shutdown and restart of the stirrer, and avoids the waste of coal slurry caused by the formation of sediment due to the fact that the stirrer stirs at a stacking angle generated at the bottom of the tank.

Drawings

FIG. 1 is a schematic overall structure of a preferred embodiment of the present invention;

FIG. 2 is a schematic bottom view of a screen basket in accordance with a preferred embodiment of the present invention;

the reference numbers in the figures denote: 1-a centrifugal pump; 2-a delivery pipe; 3-an introduction tube; 4-a screen basket; 5-tank body; 6-steel ring; 7-a steel wire rope; 8-hoisting machinery; 9-steel lath; 10-a stirrer; 11-a cover plate; 12-tank bottom; 13-concentration meter; 14-a liquid level meter; 15-slurry pump; 16-channel hole.

Detailed Description

The invention is further illustrated with reference to the accompanying drawings: