CN2669114Y

CN2669114Y - Coal powder roller kiln

Info

Publication number: CN2669114Y
Application number: CNU032459327U
Authority: CN
Inventors: 周满仓
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-06
Filing date: 2003-06-06
Publication date: 2005-01-05
Anticipated expiration: 2013-06-06

Abstract

The utility model discloses a coal powder roller kiln, comprising a kiln body, a smoke way and a roller way. The top part of the kiln body is a kiln roof, the bottom is a kiln bottom, and the intermediate part is provided with a flame proof plate. A kiln cavity is provided between the kiln roof and the flame proof plate. A burning chamber is provided between the flame proof plate and the kiln bottom. The roller way is arranged in the kiln cavity. The burning chamber is divided into two sections, that are a front burning chamber and a rear burning chamber. A front fire wall and a rear fire wall which are vertical to a horizontal direction are respectively arranged at the rear ends of the two sections. A front nozzle and a rear nozzle are respectively arranged on the front fire wall and the rear fire wall. The height from the rear nozzle to the kiln bottom is bigger than the height from the front nozzle to the kiln bottom. The kiln structure can adopt coal powder as fuel. The burning-out rate of the coal powder in the kiln can be up to 98 percent, and the grimm blackness of discharged exhaust gas is lower than one, so the contamination for environment is minimum. The utility model also has the advantages of simple structure and easy construction.

Description

The coal dust roller kilns

Technical field

The utility model belongs to the kiln of firing ceramics, relates in particular to roller kilns.

Background technology

Used fuel generally adopts liquefied petroleum gas, natural gas, diesel oil, acetylene or coal in the roller kilns of firing ceramics at present, and it is little to the pollution of air to do fuel with G﹠O, and temperature is also more even in the kiln, but these two kinds of fuel prices are too high; It is cheap to do fuel price with coal, but currently used kiln can not make coal fully burn, and this has not only caused the waste of the energy but also environment is caused serious pollution, and the firing temperature in this kiln is also inhomogeneous, therefore can influence the quality of product.The patent No. is to disclose a kind of " is the roller kilns of fuel with the coal " in 89216928.1 the patent documentation for this reason, what it was made up of kiln body, body of heater and chimney is the roller kilns of fuel with the coal, be provided with roller-way and the flue that is positioned at the roller-way below in the kiln body, be provided with the combustion chamber in the body of heater, be provided with in the roller-way by the roll shaft of bearings on kiln body two side, roll shaft is by actuator drives, the combustion chamber is arranged on the side of kiln body, the top of roller-way is provided with flue, and the combustion chamber is with being communicated with by bocca between the flue; This roller kilns are fuel so low price with the coal, reduced product cost, because the top of roller-way is provided with flue, so the combustion chamber is more even with temperature about being communicated with in the kiln by bocca between the flue, but this kiln not only structure is complicated, and kiln be still because of can not making coal fully burn, and causes the waste of the energy and to the pollution of environment.

The utility model content

The purpose of this utility model is to provide that a kind of structure is simple, temperature is even in the kiln, environmental pollution is less makees the roller kilns of fuel with coal dust.

The purpose of this utility model is achieved through the following technical solutions: this coal dust roller kilns, comprise kiln body, flue and roller-way, the top of kiln body is the kiln top, at the bottom of the bottom is kiln, there is flame shield at the middle part, between kiln top and flame shield is the kiln chamber, it between at the bottom of flame shield and the kiln combustion chamber, kiln is equipped with roller-way in the chamber, the combustion chamber is divided into two sections, be preceding combustion chamber and after-burner, preceding wall with flues and the back wall with flues perpendicular with horizontal direction are arranged respectively in their rear end, nozzle and rear nozzle before being equipped with respectively on preceding wall with flues and the back wall with flues.

A preceding nozzle and a rear nozzle respectively are housed at preceding wall with flues and back on the wall with flues respectively, the longitudinal centre line of preceding nozzle and rear nozzle is all on the cross section of crossing the kiln longitudinal centre line, and the height of rear nozzle at the bottom of the kiln is greater than the height of preceding nozzle at the bottom of the kiln.

The height of rear nozzle at the bottom of the kiln is 1.2-1.5 rice, and the height of preceding nozzle at the bottom of the kiln is 0.8-1.2 rice.

Also can be provided with 2-3 nozzle on preceding wall with flues (7) and the back wall with flues (5), the nozzle on the forward and backward wall with flues is by the upper and lower setting of vertical direction, and their longitudinal centre line is all on the cross section of crossing the kiln longitudinal centre line.

Preceding nozzle is a 6-20 rice apart from the horizontal range of rear nozzle.

The center line of roller-way (2) is a 0.2-1.3 rice apart from the distance (Q) on kiln top.

Because these roller kilns are two sections, in every section, be equipped with nozzle, the fuel nozzle from two sections respectively sprays into, therefore guaranteed before and after the kiln that the uniformity of temperature makes and has even temperature in the kiln, this furnace construction can adopt coal dust to do fuel, and coal dust burn-off rate in this kiln can reach 98%, exhaust gas discharged Green's blackness is lower than 1, therefore environmental pollution is minimum, the used fuel of kiln is coal dust in addition, low price, so also reduced the price of product, the utility model also has the advantage of being convenient to build simple in structure.

Description of drawings

Fig. 1 is the generalized section at the utility model longitudinal centre line place,

Fig. 2 locates the cross section enlarged diagram for A '-A ' of Fig. 1,

Fig. 3 is the cross sectional representation of arc kiln top kiln in the utility model.

The specific embodiment

Embodiment: this coal dust roller kilns comprise the kiln body, flue and roller-way, the top of kiln body is kiln top 1, the bottom is at the bottom of the kiln 8, there is flame shield 3 at the middle part, between kiln top 1 and flame shield 3 is kiln chamber A, it at the bottom of flame shield 3 and the kiln combustion chamber, in the A of kiln chamber roller-way 2 is housed, roller-way 2 is made up of a plurality of roller rod 2a that link, the combustion chamber is divided into two sections, be preceding combustion chamber B and after-burner C, preceding wall with flues 7 and the back wall with flues 5 perpendicular with horizontal direction are arranged respectively in their rear end, on preceding wall with flues 7 and the back wall with flues 5 a preceding nozzle 4 and a rear nozzle 4 ' are housed respectively respectively, the longitudinal centre line of preceding nozzle 4 and rear nozzle 4 ' is all on the cross section of crossing the kiln longitudinal centre line, the height H of rear nozzle 4 ' at the bottom of the kiln is greater than the height h of preceding nozzle 4 at the bottom of the kiln, between at the bottom of the kiln in preceding wall with flues 7 and the after-burner dust fall plate 6 is arranged, the upper end of these dust fall plate 6 front ends and preceding wall with flues 7 joins, join at the bottom of rear end and the after-combustion compartment kiln,, dust fall plate 6 is convenient to dust so that having an inclination angle, having cinder notch 9 on 8 at the bottom of the kiln, the front portion has flue 10 at the bottom of the kiln of preceding combustion chamber B, and flue 10 communicates with the chimney that is positioned at kiln body one side.

Kiln top 1 is a planar shaped in the present embodiment, preceding nozzle is a 6-20 rice apart from the horizontal range of rear nozzle, but should determine that the distance between two nozzles is advisable according to the situation of kiln body, the distance of two nozzles can be 8-12 rice under the general situation, the height H of rear nozzle 4 ' at the bottom of the kiln can be selected 1.2-1.5 rice for use, before the height h of nozzle 4 at the bottom of the kiln can select 0.8-1.2 rice for use, but also can according to actual needs both highly be increased or reduce, between the center line of roller-way 2 and the kiln top is 0.2-1.3 rice apart from Q, and the flame shield in the kiln body can select for use carbofrax material to make.In order to make it firm, generally will add in kiln wall outside and use metal framework a when building roller kilns, outside, kiln top adds uses lacing wire b.

During use coal dust the past nozzle 4 and rear nozzle 4 ' are sprayed into, the coal dust that coal dust that preceding nozzle sprays into and rear nozzle spray into burns simultaneously and has guaranteed the uniformity of forward and backward firing temperature in the kiln, roller-way is driven by drive disk assembly, makes to be positioned over all can be subjected to even heating by burned product from rear end to the front end of kiln on the roller-way.

Embodiment 2: the nozzle on preceding wall with flues 7 among preceding in this example combustion chamber B and the after-burner C and the back wall with flues 5 is 2-3, nozzle on the forward and backward wall with flues is all by the upper and lower setting of vertical direction, the height of each nozzle is pressed actual needs and is decided, all on the cross section of crossing the kiln longitudinal centre line, other structures are identical with embodiment 1 for their longitudinal centre line.

Embodiment 3: the nozzle on preceding wall with flues among preceding in this example combustion chamber B and the after-burner C 7 and the back wall with flues 5 is 2-3, and the nozzle on the forward and backward wall with flues is all by the horizontal direction setting, other structures and

Embodiment 1 is identical.

Kiln in the embodiment of 1-3 top also can be adopted traditional arc.When kiln top when arc, between the center line of roller-way 2 and the kiln top peak is 0.2-1.3 rice apart from Q '.

Claims

1, a kind of coal dust roller kilns, comprise kiln body, flue and roller-way, the top of kiln body is kiln top (1), the bottom is (8) at the bottom of the kiln, there is flame shield (3) at the middle part, between kiln top and flame shield is kiln chamber (A), it between at the bottom of flame shield and the kiln combustion chamber, roller-way (2) is housed in the kiln chamber, it is characterized in that: the combustion chamber is divided into two sections, be preceding combustion chamber (B) and after-burner (C), preceding wall with flues (7) and the back wall with flues (5) perpendicular with horizontal direction are arranged respectively in their rear end, on preceding wall with flues (7) and the back wall with flues (5) preceding nozzle (8) and rear nozzle (4) are housed respectively.

2, to weigh 1 described coal dust roller kilns according to right, it is characterized in that: on preceding wall with flues (7) and the back wall with flues (5) a preceding nozzle (8) and a rear nozzle (4) are housed respectively respectively, before the longitudinal centre line of nozzle (8) and rear nozzle (4) all on the cross section of mistake kiln longitudinal centre line, the height (H) of rear nozzle (4) at the bottom of the kiln is greater than the height (h) of preceding nozzle (6) at the bottom of the kiln.

3, will weigh 2 described coal dust roller kilns according to right, it is characterized in that: the height (H) of rear nozzle (4) at the bottom of the kiln is 1.2-1.5 rice, and the height (h) of preceding nozzle (6) at the bottom of the kiln is 0.8-1.2 rice.

4, to weigh 1 described coal dust roller kilns according to right, it is characterized in that: be provided with 2-3 nozzle on preceding wall with flues (7) and the back wall with flues (5), nozzle on the forward and backward wall with flues is by the upper and lower setting of vertical direction, and their longitudinal centre line is all on the cross section of crossing the kiln longitudinal centre line.

5, will weigh 1,2,3 or 4 described coal dust roller kilns according to right, it is characterized in that: preceding nozzle is a 6-20 rice apart from the horizontal range of rear nozzle.

6, right will be weighed 5 described coal dust roller kilns, it is characterized in that: the center line of roller-way (2) is a 0.2-1.3 rice apart from the distance (Q) on kiln top.