CN2230224Y - Front shaped-coal device with automatic sifting device - Google Patents

Abstract

The utility model relates to a front shaped-coal device with an automatic sifting device for industrial boilers or grates, which is composed of a continuously coaling device, a sieve bucket, two coiler rolls, a receiving bin, a double-deck automatic sieve, a compound eccentric mechanism connected with the double-deck automatic sieve, and a coal dredge device contacting the roll surface of the coiler rolls, wherein, one of the coiler rolls is an eccentric adjustable coiler roll. Lengthwise shaping chambers and circular direction shaping chambers interactively formulated are arranged on the roll surface of the coiler rolls. By utilizing the utility model, molded coal can be quickly shaped, burning characteristic is fast, boiler efficiency is considerably enhanced, energy source is saved, pollution is reduced, operation is reliable, efficiency is high, and economy and social benefits are remarkable.

Description

The stokehold moulded coal device of band Automatic sieve

The utility model relates to the stokehold of Industrial Boiler or stove fire coal and sieves and forming technique specifically a kind of stokehold moulded coal device with Automatic sieve automatically.

With the coal is that the master will be China's feature of energy resource structure from now on.At present, the annual thermal coal consumption of China accounts for more than 80% of national coal consumption.These thermal coals in use just directly burn with the form of raw coal without dressing of coal by washing substantially, greatly reduce efficiency of fire coal thus, have increased energy consumption, have increased the weight of environmental pollution.Country's Air Pollution Prevention Law requires the restriction scatter fire of raw coal to advocate Industrial Boiler and stove adopts moulded coal or other clean fuel.For this reason, Chinese patent technology " the coal-fired shaped device in roll-type stokehold ", " Industrial Boiler has molding coal machine of one's own " provide technical scheme for the coal moulding of loosing, soon raw coal is sent in the stove after the stokehold is rolled into ellipsoid or wide pillow moulded coal again and is burnt, the problem that these technical schemes exist is, the molding coal machine that is loaded in the coal bunker is not with screening mechanism, require feed coal to screen in advance, and its moulded coal production needs to be complementary with the feeding of fire grate alkene coal, control is strict, complex structure, volume is big, and the cost height is so fail to be used widely.

The inventor's patented technology " the coal-fired self-service screening prilling granulator of Industrial Boiler " (ZL92201347.0) owing to be provided with this screening plant of drag screen, has solved the problem that exists in the aforementioned techniques scheme better.Yet this patent in use also has some shortcomings, and subject matter is that drag screen can not sieve automatically, but realizes screening by the gravity of coal in dropping process, and the inclination angle of causing drag screen thus is (45 °) greatly, and the height of whole prilling granulator is bigger.

The purpose of this utility model is to provide a kind of stokehold moulded coal device of novel band Automatic sieve, to realize raw coal screening and moulded coal quick automatic forming automatically, improves efficient and reliability that moulded coal is produced, the overall height of reduction moulded coal device.

The stokehold moulded coal device of the said band Automatic sieve of the utility model, comprise continuous coal feeder (1), be positioned at sieve bucket (2), hopper (8), and a pair of format roll (9) and (9 ') of continuous coal feeder (1) below, it is characterized in that, it also comprises the double-deck Automatic sieve (4), the composite eccentric mechanism (6) that links to each other with double-deck Automatic sieve (4) that are positioned at continuous coal feeder (1) below, be positioned at format roll (9) with (9 ') below and the coal loosener (12) and (12 ') that contact with its roll surface; Lower end at double-deck Automatic sieve (4) is provided with by-pass port (7); Said format roll (9) and (9 ') both one of be the eccentric adjustable format roll, be shaped on vertical forming cavity (14) and hoop forming cavity (15) on the roll surface of two format rolls, and mutual configuration.

The stokehold moulded coal device of the band Automatic sieve of Gou Chenging can sieve raw coal in the process of coal supply voluntarily thus, will be mixed into the stove burning less than the lump coal that the diffusing coal of 7mm be made in moulded coal and the raw coal greater than 7mm, briquette molding is fast, and combustion characteristics is good, has improved the operational efficiency of Industrial Boiler or stove effectively, saved the energy, reduced flue dust and discharge of harmful gases, alleviated atmosphere pollution, in addition, its compact conformation, highly low, functional reliability is strong, has good economic and social benefit.

Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail

Fig. 1: overall construction drawing of the present utility model.

Fig. 2: the utility model format roll forming cavity structure chart.

As shown in Figure 1, coal feeder (1) links to each other with the receiving opening (3) of sieve bucket (2) continuously, and double-deck Automatic sieve (4) links to each other with composite eccentric mechanism (6), and is driven by motor (5); Raw coal is directly delivered to double-deck Automatic sieve (4) by continuous coal feeder (1) through sieve bucket (2) and receiving opening (3), under the driving of eccentric stiffener (6), raw coal is sieved automatically with vibration and swing, in the raw coal granularity more than or equal to the lump coal of 7mm directly automatically the by-pass port (7) of screening (4) lower end fall into bucket coal (13) and advance the stove burning.Granularity then falls into hopper (8) less than the diffusing coal of 7mm in the raw coal after Automatic sieve (4) screening, and format roll (9) and (9 ') will be rolled into moulded coal from the diffusing coal of hopper (8) through the laggard stove burning of coal bunker (13) under the driving of motor (10).

For guaranteeing that raw coal normally sieves and prevent the stifled sieve of moist coal, the used Automatic sieve (4) of the utility model is provided with double-deck diffusion sieve lattice, produce two kinds of different amplitudes by composite eccentric mechanism (6), promptly swing and vibrate, make Automatic sieve make Automatic sieve (4) reciprocally swinging on the one hand, raw coal is carried out fully, sieves effectively, make the mutual rubbing up and down of Automatic sieve double deck screen lattice on the other hand to prevent obstruction.The inclination angle of double-deck Automatic sieve is 25 °-35 °.

Make moulded coal have higher production efficiency and good combustion characteristics, be important performance characteristics of the present utility model, its concrete technical measures are, on the roll surface of format roll (9) and (9 '), make vertical forming cavity (14) and hoop forming cavity (15) (as shown in Figure 2), and the forming cavity on the two format roll roll surfaces disposes alternately, simultaneously, format roll (9) and (9 ') are made telescopic format roll, and one of them is the eccentric adjustable format roll, like this, the moulded coal that rolls out is the granular moulded coal of the non-pincushion piece of non-ball, has goodish combustion characteristics.In addition,,, thereby make the production of moulded coal be in optimum state all the time, improved the ratio of briquetting and the production efficiency of moulded coal greatly so the rolling intensity of moulded coal can be adjusted to optimum value at any time because one of two format rolls are the eccentric adjustable roller.

For format roll (9) and (9 '), both can on the roll surface of each format roll, all make vertical forming cavity (14) and hoop forming cavity (15), and mutual configuration; Also can on a roll surface, make vertical forming cavity, and on another roll surface, make the hoop forming cavity, and mutual configuration.

In addition, also be provided with coal loosener (12) and (12 ') in the below of format roll (9) and (9 '), its effect is to keep roll surface cleaning and guarantee that moulded coal is detached into die cavity, and the production of assurance moulded coal is carried out smoothly.

Claims (4)

1, the stokehold type device of band Automatic sieve, comprise continuous coal feeder (1), be positioned at sieve bucket (2), hopper (8) and a pair of format roll (9) and (9 ') of continuous coal feeder (1) below, of the present utility model being characterised in that, it also comprises the double-deck Automatic sieve (4), the composite eccentric mechanism (6) that links to each other with double-deck Automatic sieve (4) that are positioned at continuous coal feeder (1) below, be positioned at format roll (9) with (9 ') below and the coal loosener (12) and (12 ') that contact with its roll surface; Lower end at double-deck Automatic sieve (4) is provided with by-pass port (7); Said format roll (9) and (9 ') both one of be the eccentric adjustable format roll, be shaped on vertical forming cavity (14) and hoop forming cavity (15) on the roll surface of two format rolls, and mutual configuration.

2, the stokehold moulded coal device of band Automatic sieve according to claim 1 is characterized in that, all is shaped on vertical forming cavity (14) and hoop forming cavity (15) on the roll surface of said format roll (9) and (9 '), and mutual configuration.

3, the stokehold moulded coal device of band Automatic sieve according to claim 1, it is characterized in that said format roll (9) and (9 ') can also be to make vertical forming cavity on the roll surface of an one format roll, make the hoop forming cavity on another roll surface, and mutual configuration.

4, the stokehold moulded coal device of band Automatic sieve according to claim 1, it is characterized in that, said double-deck Automatic sieve (4), its inclination angle is 25 °-35 °, its sieve lattice are diffusion sieve lattice, the composite eccentric mechanism (6) that is driven by motor (5) drives, and produces two kinds of different amplitudes, make the Automatic sieve reciprocally swinging and sieve with the double deck screen lattice mutually about rubbing with anti-clogging.

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