CN201052473Y

CN201052473Y - Coal slurry separator

Info

Publication number: CN201052473Y
Application number: CNU200720063685XU
Authority: CN
Inventors: 庹智平; 屈飞
Original assignee: BEIJING SANKUANGTONG TECHNOLOGY Co Ltd
Current assignee: BEIJING SANKUANGTONG TECHNOLOGY Co Ltd
Priority date: 2007-06-29
Filing date: 2007-06-29
Publication date: 2008-04-30
Anticipated expiration: 2017-06-29

Abstract

The utility model relates to a sorting machine, in particular to a fine coal sorting machine for concentrated coal mud. The utility model aims at providing an improved coal mud sorting machine, particularly for effectively sorting -3-+0.25 mm grade materials. The utility model comprises a sorting chamber, which is characterized in that the upper portion of the sorting chamber is provided with a dispersed barrel with a tangential feeding pipe, a guide rod passes through the center position of the dispersed barrel, the upper end of the guide rod is connected with an electrical control air-actuated jar, the lower end is connected with a plug valve, the sorting chamber is further provided with an overflow trough, a demarcation strip, an air spout, a density sensor and an inclined plate unit, wherein the density sensor is connected with an electronic control system, the air spout is positioned on the demarcation strip and is connected with a pressure tank, the inclined plate unit is positioned on the upper portion of the sorting chamber, and the overflow trough on the upper periphery is communicated with the clean coal exit. The utility model is mainly used for sorting concentrated coal mud.

Description

The slime separation machine

Technical field

The utility model relates to a kind of separator, more particularly, relates to a kind of to concentrating the slime separation machine that the coal slime slurry carries out sorting.

Background technology

The slime separation machine is according to material density otherness principle, in rising disturbance current, finish the separation of weight material, to reach the purpose of the abundant sorting of cleaned coal and spoil, it is that sinking speed when utilizing particle by a spontaneous fluidised form solid bed is finished sorting, in this bed, degree enrichment of particles suspended object height and phase mutual interference, form density gradient, pass through underflow with the restriction material, the suspension liquidation state of material can be controlled by ascending current in this bed, in collision repeatedly, after seething, light and little particle enters overflow with ascending current, heavy big particle then sinks to entering underflow along the cylindrical shell edge, the underflow discharge is to be finished by the degree of liter of a PID automatic control system adjustment bottom centre embolism valve.Existing similar screening installation, remain less in disposal ability, sorting index is not high and the more high weak point of cleans ash.

Summary of the invention

The purpose of this utility model is to provide a kind of follow-on slime separation machine, be intended to the material of effective sorting-3-+0.25mm grade, make it to be used for heavily to be situated between between eddy flow and the floatation process, can make on the particulate lower limit of the rotational flow sorting that heavily is situated between and move, the larger particles upper limit into flotation is moved down, finally, the recycled in its entirety rate of cleaned coal is improved.

The utility model comprises the slime separation chamber, it is characterized in that: the dispersion bucket 2 of a band tangential feed pipe 16 is arranged at the top of described slime separation chamber 5, pass the center that disperses bucket 2, a guide rod 4 is arranged, its upper end links to each other with ecp cylinder 1, the lower end links to each other with embolism valve 10, in the separation chamber 5, also be provided with overflow launder 3, distribution plate 7, nozzle 11, density sensor 12 and hang plate group 13, wherein, density sensor 12 links to each other with electric-control system 15, and nozzle 11 places on the distribution plate 7 and with pressure water tank 8 and links to each other, and hang plate group 13 places the top of

separation chamber

5, and 3 of overflow launders that are positioned at top periphery export 17 with cleaned coal and are connected.

Described hang plate group 13 is along the circle distribution in the separation chamber 5.

Described distribution plate 7 is distribution plates that are back taper.

The screening installation that the utility model is close with function is compared, advantage is that disposal ability is big, the efficiency of separation is high, cleans ash is low, operation is unpowered, simple in structure, floor space is little, carry out control operation automatically, the management maintenance workload is few and operating cost is low.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Among the figure: 1-ecp cylinder, 2-disperse bucket, 3-overflow launder, the 4-guide rod, 5-slime separation chamber, the horizontal nozzle of 6-, the 7-distribution plate, 8-pressure water tank, 9-embolism valve seat, 10-embolism valve, 11-nozzle, 12-density sensor, 13-hang plate group, 14-blowoff valve, 15-PLC electric-control system, the 16-feed pipe, the outlet of 17-cleaned coal, 18-technology clear water inlet.

The specific embodiment

Below in conjunction with accompanying drawing the utility model and the specific embodiment thereof are described in further detail.

Referring to accompanying drawing, the utility model comprises the slime separation chamber, it is characterized in that: the dispersion bucket 2 of a band tangential feed pipe 16 is arranged at the top of described slime separation chamber 5, pass the center that disperses bucket 2, a guide rod 4 is arranged, its upper end links to each other with ecp cylinder 1, the lower end links to each other with embolism valve 10, in the separation chamber 5, also be provided with overflow launder 3, distribution plate 7, nozzle 11, density sensor 12 and hang plate group 13, wherein, density sensor 12 links to each other with electric-control system 15, nozzle 11 places on the distribution plate 7 and with pressure water tank 8 and links to each other, and hang plate group 13 places the top of

separation chamber

Described distribution plate 7 is distribution plates that are back taper.

Concentrate coal slime slurry (concentration is 45-50%) and enter dispersion bucket 2 by tangential feed pipe 16, make it to be scattering into equably in the separation chamber 5, be beneficial to the sorting of coal slime and slow down disturbing the impact of bed, disperse the barrel top cover center that the ecp cylinder 1 and the guide rod 4 of 10 actions of control embolism valve are installed, embolism valve 10 is the main thoroughfares of discharging underflow, underflow control is a cover automatic control system, under in the separation chamber, the offset that the comparison signal of following two density sensors 12 produces, the current signal that is sent 4-20mA by PLC electric-control system 15 makes controller pass to 1 action of ecp cylinder, drive the 10 continuous opening and closing of embolism valve by guide rod 4, cause and disturb the sorting layer to be in a good stable state, the spoil that is deposited on the bottom is discharged, on float on end face cleaned coal discharge through overflow launder 3 and cleaned coal outlet 17.Cleaned coal is along with floating to separation chamber's end face on the ascending current, come together in the overflow launder 3, this will greatly improve the disposal ability of equipment, be arranged at 6 groups of hang plate groups 13 on separation chamber top, every group of hang plate is parallel and equidistant, the spoil that is mingled in the come-up cleaned coal is further separated, thereby the ash content in the cleaned coal is reduced, distribution plate 7 places the bottom of separation chamber 5, more than 400 nozzle is installed on it, be back taper, current from the nozzle ejection during work form a desirable interference fluid bed, make coal slime obtain sufficient sorting, in continuous interference assorting room, density is little, be not enough to overcome and float to the top on the material (cleaned coal) of water resistance and water buoyancy and overflow, and density is big, material (spoil) with big sinking speed then falls to the separation chamber bottom downwards, discharge after embolism valve 10 is opened, therefore, the power of injection water is to regulate the desirable key factor of disturbing fluidized-bed layer.To be the technology clear water that will have a 0.25-0.4MPa enter the pressure water tank 8 of separation chamber 5 bottoms dispersedly by three arms in the sorting water filling, and supply nozzle produces the water source that sprays, and injection flow can be regulated the requirement of sorting according to the user.The slime separation machine operation does not need the post driver, the black water of a certain coal has been debugged operational factor after, needn't change during ordinary production, the adjustment of separation chamber's internal density gradient is self-regulating by the PID closed-loop system.After ascending current speed is adjusted to a suitable numerical value and is full of separation chamber, just can begin charging, carry out ordinary production, have only when stable state is destroyed, just need reset the control parameter, in order to reach the setting value that separating effect can change controller.During normal the operation, the situation that only needs to observe cleaned coal overfall and discharge refuse mouth is by observing spillway discharge and reduce and the flow of discharge refuse stone obviously increasing and enriching, just indicating that the nozzle on the distribution plate may be blocked, the back water flushing that needs to stop, blowoff valve 14 can be used for blowdown as required.

Claims

1. slime separation machine, comprise the slime separation chamber, it is characterized in that: the dispersion bucket (2) of a band tangential feed pipe (16) is arranged at the top of described slime separation chamber (5), pass the center that disperses bucket (2), a guide rod (4) is arranged, its upper end links to each other with ecp cylinder (1), the lower end links to each other with embolism valve (10), in the separation chamber (5), also be provided with overflow launder (3), distribution plate (7), nozzle (11), density sensor (12) and hang plate group (13), wherein, density sensor (12) links to each other with electric-control system (15), nozzle (11) places distribution plate (7) upward and with pressure water tank (8) to link to each other, and hang plate group (13) places the top of separation chamber (5), and the overflow launder (3) that is positioned at top periphery then is connected with cleaned coal outlet (17).

2. by the described separator of claim 1, it is characterized in that described hang plate group (13) is along the circle distribution in the separation chamber (5).

3. by the described separator of claim 1, it is characterized in that described distribution plate (7) is a distribution plate that is back taper.