CN217302849U - Fire arrester for boiler flue - Google Patents

Abstract

The boiler flue flame arrester comprises a flame-arresting flashboard for the flue gas to enter and exit the shell; the fire-retardant gate plate is composed of a steel frame, a steel wire mesh and a metal net; an adjusting mechanism is arranged above the fire-retardant flashboard; the adjusting mechanism comprises connecting screw rods on two sides, the upper ends of the connecting screw rods are connected with a fixed connecting plate, the lower ends of the connecting screw rods are connected with the inlet and outlet shell, the upper ends of the trapezoidal screw rods are provided with transmission nuts, a hand wheel is arranged after the trapezoidal screw rods penetrate through the fixed connecting plate, and a flange at the lower end of each trapezoidal screw rod is connected with the center of the fire-retardant flashboard through a bolt; the lower part of the fire-retardant flashboard is connected with the flue gas inlet and outlet shell. The utility model discloses the metal net effectively prevents the mars to get into the sack cleaner, prevents that the sack from burning out to high temperature. Simple structure, low in manufacturing cost, maintenance convenience, long service life, reduction material waste and environmental pollution, boiler and dust remover operation are stable, and are safe environmental protection.

Description

Fire arrester for boiler flue

Technical Field

The utility model relates to a boiler flue spark arrester especially relates to the spark arrester on the boiler smoke vent who uses living beings granule as fuel.

Background

The boiler using coal and other solid fuels, especially the boiler using biomass particles as fuel, saves coal fuel, utilizes waste material resources, adopts a bag-type dust collector to remove dust, and the smoke emission can easily reach the national emission standard, but the following disadvantages exist in practical use: because the smoke exhaust channel of the boiler is not provided with a fire retardant device for preventing sparks from entering the bag-type dust collector, and fine particles which are not completely combusted are not arranged, smoke with the sparks enters the bag-type dust collector, so that the bag is easily burnt, and the following four problems are brought, namely, the purchase cost of the bag is high, and the production cost of enterprises is increased; secondly, the fire-fighting potential safety hazard exists when the cloth bag is burnt; thirdly, the cloth bags are all organic polymer fibers, and a large amount of toxic gas can be released to pollute the environment when the cloth bags are combusted; fourthly, the mars causes the burning of the cloth bag, influences the production stability, restricts the stability of the product quality of the production line, and causes complaints of downstream customers due to the failure of normal delivery or quality accidents. Therefore, a novel fire retardant device must be designed and manufactured, and the problem that a dust collector cloth bag is burnt due to sparks in a boiler smoke exhaust channel taking biomass particles as fuel is solved.

Disclosure of Invention

The utility model aims at avoiding boiler smoke exhausting channel mars to arouse the problem that the dust removal sack burns out, providing a back-fire relief device on being fit for the boiler, especially using living beings granule as the boiler smoke exhausting channel of fuel.

The technical scheme of the utility model: the boiler flue flame arrester comprises a flame arresting gate plate for the flue gas to enter and exit the shell; the fire-retardant gate plate is composed of a steel frame, a steel wire mesh and a metal net; an adjusting mechanism is arranged above the fire-retardant flashboard; the adjusting mechanism comprises a trapezoidal screw, a transmission nut, a key, a hand wheel, a locking nut, a fixed connecting plate and a connecting screw; the upper ends of the connecting screw rods on two sides are connected with a fixed connecting plate, the lower ends of the connecting screw rods are connected with an inlet and outlet shell through threads, the upper end of the trapezoidal screw rod is provided with a transmission nut, a hand wheel, a locking nut and a key are arranged after the transmission nut passes through the fixed connecting plate, and a flange at the lower end of the trapezoidal screw rod is connected with the center of the fire-retardant flashboard through a bolt; the adjusting mechanism is connected with the fire-retardant flashboard; the fire-retardant flashboard is connected with the flue gas inlet and outlet shell through bolts, nuts and sealing gaskets.

The metal net 4 is uniformly paved to form a metal net with the thickness of 30-100 mm, and more than two flue flame arresters are connected in series and installed in a flue gas inlet pipeline of the bag-type dust remover. The cleaning of the accumulated dust layer is convenient for one use after another, and the production line can not be stopped due to the stop of the boiler.

The utility model has the advantages that: when smoke in the smoke exhaust pipeline passes through the flame arrester, the metal net can catch sparks contained in incomplete combustion at any time, so that the sparks are prevented from entering the bag-type dust remover, and the bag is prevented from being burnt at high temperature. Meanwhile, the structure is simple, the manufacturing cost is low, the maintenance is convenient, the service life is long, the material waste and the environmental pollution are reduced, the operation of the boiler and the dust remover is stable, and the boiler and the dust remover are safe and environment-friendly.

Drawings

FIG. 1 is a schematic view of the flame arrestor of the present invention;

FIG. 2 is a schematic front view of the structure of a firestop shutter 5 of the present flame arrestor;

FIG. 3 is a schematic top view of the structure of a firestop shutter 5 of the present flame arrestor;

FIG. 4 is a schematic view of the adjustment mechanism of the present flame arrestor with drive nut 13 assembled with key 9;

FIG. 5 is a schematic view of the trapezoidal screw of the adjustment mechanism of the present flame arrestor.

In the figure: business turn over casing 1, steelframe 2, wire net 3, metal net 4, back-fire relief flashboard 5, trapezoidal screw rod 6, connecting screw 7, fixed connection board 8, key 9, lock nut 10, hand wheel 11, nut 12, drive nut 13, bolt 14, sealed 16.

Detailed Description

As shown in fig. 1, a flame arrester for a boiler flue is manufactured and configured to an inlet and outlet shell 1, a steel frame 2, a steel wire mesh 3 and a metal wire mesh 4 according to the drawing standard, and a flame-retardant gate plate 5 is manufactured together, wherein the effective smoke flow area of the flame-retardant gate plate is 2 times or more of the effective smoke flow area of a smoke exhaust pipeline; a fire-retardant flashboard is arranged in the flue gas inlet and outlet shell; an adjusting mechanism is arranged above the fire-retardant flashboard; the adjusting mechanism comprises a trapezoidal screw 6, a transmission nut 13, a key 9, a hand wheel 11, a locking nut 10, a fixed connecting plate 8 and a connecting screw 7; the connecting screw rods 7 on two sides are connected with the fixed connecting plate 8 through nuts 12, the lower ends of the connecting screw rods are connected with the in-out shell 1 through threads, the upper end of the trapezoidal screw rod 6 is provided with a transmission nut 13, a hand wheel 11, a locking nut 10 and a key 9 are arranged after penetrating through the fixed connecting plate 8, and the lower end of the trapezoidal screw rod 6 is connected with the center of the fire-retardant flashboard 5; the adjusting mechanism is connected with the fire retardant plate 5 through a bolt 14 and a trapezoidal screw 6; the fire retardant plate is connected with the flue gas inlet and outlet shell 1 through a nut and a sealing gasket 16. The smoke inlet and outlet shell 1, the fire-retardant flashboard 5 and the adjusting mechanism are connected to form a fire arrester.

Because metal ball 4 is torn and evenly is spread the installation and is fixed in the metal net 4 that has formed 30~100mm thick on steel frame net 3 through the manual work on the spark arrester, when the flue gas passes through the spark arrester by smoke exhaust passage, the spark that insufficient combustion contained in discharging fume can be caught at any time to metal ball 4, prevents the spark to get into the sack cleaner, prevents that high temperature from burning out the sack, accomplishes the back-fire relief function. Generally, the number of flame arresters on the smoke exhaust pipeline is formed by installing more than 2 flame arresters in series, so that the smoke exhaust pipeline is convenient to clean the accumulated dust layer for one use. When the flame arrester is large in dust deposition and needs to be cleaned regularly, the spare flame arrester is firstly put into use, the flame arrester needing to be cleaned is stopped, the flame arrester is put into use and stopped, the connecting nut and the bolt between the flame arrester shutter 5 and the in-out shell 1 are firstly dismounted, and the flame arrester is manually driven to be put into use or cleaned through the adjusting mechanism consisting of the hand wheel 11 and the transmission nut 13.

The utility model discloses the spark arrester applies to the boiler, especially uses the boiler smoke exhaust passage of living beings granule as fuel to catch the mars, when preventing the mars to cause the sack of high temperature burnout sack cleaner, because the metal ball is evenly torn through the manual work on the spark arrester, and evenly bedding installation forms the metal net, when the flue gas passes through the spark arrester by exhaust pipe, the metal net has formed metal net form protective screen, can catch the mars that not fully burn contained in discharging fume at any time, prevent the mars to get into the sack cleaner, prevent the sack from being burnt out at high temperature. Generally, the number of the flame arresters on the smoke exhaust pipeline is formed by installing more than two flame arresters in series, so that the smoke arrester is convenient to clean the accumulated dust layer for one use. The spark capturing efficiency is high, the productivity is improved, the production cost is reduced, and the safety and the environmental protection are guaranteed.

The flame arrester is applied to boilers, particularly boiler bag-type dust collectors taking biomass particles as fuel, the burning probability of the bag is greatly reduced, the production efficiency is improved, the fund is saved, the production cost is reduced, the environment is protected, the safety production is guaranteed, the production line of an enterprise can stabilize production, and the economic benefit is improved.

Claims (2)

1. The boiler flue flame arrester comprises a flue gas inlet and outlet shell (1), and is characterized in that a flame-retardant flashboard (5) is arranged in the flue gas inlet and outlet shell; the fire-retardant gate plate is composed of a steel frame (2), a steel wire mesh (3) and a metal net (4); an adjusting mechanism is arranged above the fire-retardant flashboard; the adjusting mechanism comprises a trapezoidal screw rod (6), a transmission nut (13), a key (9), a hand wheel (11), a locking nut (10), a fixed connecting plate (8) and a connecting screw rod (7); the upper ends of the connecting screw rods (7) on the two sides are connected with a fixed connecting plate (8) through bolts, the lower ends of the connecting screw rods are connected with an inlet and outlet shell through threads, the upper ends of the trapezoidal screw rods are provided with transmission nuts, a hand wheel (11), a locking nut (10) and a key (9) are arranged after the trapezoidal screw rods penetrate through the fixed connecting plate, and a flange at the lower end of each trapezoidal screw rod (6) is connected with the center of the fire-retardant flashboard (5) through a bolt (14); the adjusting mechanism is connected with the fire-retardant flashboard; the fire-retardant flashboard is connected with the flue gas inlet and outlet shell through bolts, nuts and sealing gaskets.

2. The flame arrester of claim 1, wherein the metal net is uniformly laid to form a metal net with a thickness of 30-100 mm, and the two flue flame arresters are installed in series in the flue gas inlet pipeline of the bag-type dust remover.

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