12results about "Solid bar grate" patented technology

This invention provides a small-scale incinerator for the disposal of dead trees and branches, and for the suppression of fire and pest infestations. [Solution] A small wood incinerator having a cylindrical side wall with an air intake 10 at the bottom, configured such that air flowing in from the air intake rises along the side of the side wall to air-cool the furnace wall, and further having a stone plate 3 as a heat-resistant plate, the air diffracts inward at the top of the small wood incinerator to supply oxygen to the top of the stone plate, and the incineration radiant heat is reflected by the side wall, so that a high-temperature furnace core is formed on the top of the stone plate, thereby creating a structure that promotes rapid short-term heat convection.

The invention relates to a grate block (10) for a grate of an incinerator. The grate block (10) comprises a block body (12) having an upper wall (14) forming a support surface (16) along which incineration material is to be conveyed, and a front wall (20) having a support edge (23) designated for contact with the support surface of an adjacent grate block in a pushing direction S, wherein the upper wall (14) has an air supply opening (35) constituted by an air supply channel (38). The air supply opening (35) is at least partially surrounded by a thickening (50) protruding from the support surface (16), which forms a protection channel (57) extending the air supply channel (38) and is designated for preventing liquid from flowing into the air supply opening (35).

The gasification furnace bar is of a square frame furnace bar structure formed by welding and splicing square pipes, round steel and strip-shaped steel plates, when the square pipes are spliced, two diagonal lines of square pipe openings are in a horizontal and vertical cross-shaped prismatic state, the square pipes are welded and spliced into a right-angle comb tooth shape, the round steel is welded between the comb teeth to adjust the distance between the furnace bars, and the strip-shaped steel plates are welded and spliced into the square frame furnace bar structure. A comb tooth end is welded and spliced into a square frame structure through strip-shaped steel plates to serve as a grate main body, a traditional grate is prone to being blocked by ash and charcoal fire fragments, air inlet and oxygen supply in a hearth are affected, air inlet is insufficient, combustion is incomplete, and fuel is wasted, a square pipe pipeline supplies oxygen through gasification holes, the charcoal fire fragments can be rapidly combusted, and the temperature of the hearth is increased; under the condition that an ash pool of the hearth is blocked, oxygen is directly and evenly supplied to a specific area in the hearth from the square pipe, the supplied oxygen can be conveyed to the position below a chimney smoke outlet at the topmost end of the hearth, oxygen is supplied for the last time for unburned firewood smoke which is about to be discharged from the hearth for combustion, and complete combustion is guaranteed.

The invention relates to a grate block (10) for a combustion grate. The grate block (10) comprises a block body (12) which has an upper wall (14) forming a support surface (16) along which the material to be combusted is conveyed, and a front wall (20) having a lower support edge (23), which support edge (23) is designed to come into contact with the support surface of a grate block adjacent in the thrust direction S, wherein the upper wall (14) has an air supply opening (35) formed by an air supply channel (38). The air supply opening (35) is at least partially surrounded by a thickening (50) projecting from the support surface (16), which forms a protective channel (57) extending the air supply channel (38) and is designed to prevent liquid from flowing into the air supply opening (35).

To provide a fire grate capable of suppressing an occurrence of a local abnormal combustion by uniformly supplying combustion air to an object to be combusted from a fire bed where the fire grates are arranged.SOLUTION: A fire grate has a supported basal end side, has a lower surface at a tip side abutting a back surface of the fire grate at a downstream side in a conveying direction of an object to be combusted, is arranged in such a way that the back surface abuts the lower surface at the tip side of the fire grate at an upstream side in the conveying direction, and catches and conveys the object to be combusted by the back surface through relative movement with the fire grate at the upstream side or the downstream side in the conveying direction so as to form a hearth of a stoker type incinerator. A reference surface 13R that maintains an abutting state with a lower surface 17 of the fire grate at the upstream side in the relative movement is formed on a back surface 13. A recess 13D that forms an air inlet G supplying combustion air with the lower surface of the fire grate at the upstream side is formed on the reference surface so as to be continuous in a direction along the conveying direction. The recess includes a displacement region where a formation position of the air inlet is displaced along with the relative movement in a widthwise direction intersecting with the conveying direction.SELECTED DRAWING: Figure 6

A grate bar front section (10) for mounting on a grate bar back section (20) in order to form a grate bar (1) for example for a waste incineration plant, wherein the grate bar front section (10) has a refractory mineral material and a top (14), a bottom (12), a front (16), two narrow sides, and a back (18) as well as a grate bar longitudinal axis (2) extending parallel to the top (14) through the front (16) and the back (18), characterized in that - a recess (70) extends from the underside (12) towards the top (14), - the recess (70) has at least one contact surface (71) for introducing a force acting in the direction of the rear (18) and / or the front (16) into the grate bar front section (10), and - at least one channel (32) with a channel longitudinal axis (33) connects the rear (18) and / or the front (16) and / or at least one side surface 15 with the recess (70), wherein the channel (32) can accommodate a bolt (30) or other connecting element for fastening the front section (10) to the rear section (20) and / or to a front plate (160).

A prefabricated composite blowing grate plate module (10), a blowing conveying base plate (30), and a grate-type pre-combustion furnace. The blowing grate plate module (10) consists of a housing (101), a wear-resistant castable material (102), and at least two gas flow nozzles (103) with upwardly inclined outlets, wherein ejection openings of the gas flow nozzles (103) are all located on a material receiving surface of the blowing grate plate module (10), and the material receiving surface is the upper surface of the blowing grate plate module (10); and in a material flow direction, the included angle γ1 between the ejection direction of the ejection opening of the gas flow nozzle (103) located on the rearmost side and the material receiving surface of the blowing grate plate module (10) is 10°-35°, and the included angle between the ejection direction of the ejection opening of each of the remaining gas flow nozzles (103) and the material receiving surface of the blowing grate plate module (10) is equal to γ1 or gradually decreases, such that a gas flow entering the gas flow nozzles (103) is obliquely ejected upwards along the material receiving surface, thus driving materials to be ejected upwards and form a parabolic path so as to rise and move forwards. The device can reduce the problems of incomplete combustion, operating-situation fluctuation, skinning and blockages, NOx exceeding the standard, etc., caused by using fossil fuels in a firing system, and can achieve the aims of increasing the proportion of alternative fuel usage, stabilizing a thermal regime of a kiln, and enabling ultra-low emissions of the system.

Various implementations include a combustor system including an inner wall, a fuel grate, an ash grinder, an igniter, and a fan. The inner wall defines a combustion chamber and has a longitudinal axis and first and second ends. The inner wall defines primary and secondary air inlets. The primary air inlets are defined closer than the secondary air inlets to the first end. The fuel grate is disposed within the combustion chamber between the primary and secondary air inlets and is configured to support fuel disposed within the combustion chamber. The ash grinder is disposed between the fuel grate and the secondary air inlets and is rotatable about the longitudinal axis relative to the fuel grate. The igniter provides energy to the combustion chamber. The fan is configured to cause air to flow from the primary and secondary air inlets through the second end of the combustion chamber.

The present invention relates to an air supply device (65) for a room heater (1) comprising an air inlet duct (70) configured to open outside the room, the air inlet duct comprising a radial wall (75) defining an inlet volume (80), and an axial wall (85) extending between the radial wall and closing the inlet volume, and a direct air duct (95) configured to supply air to a fireplace, the direct air duct passing through the axial wall and opening into the air inlet duct. The axial wall has at least one opening (90) configured to supply air to the room. A damper (105) is mounted around the direct air duct and is movable between a closed position, in which the damper closes at least one opening, and an open position, in which air can flow through at least one opening.

The invention relates to a prefabricated composite injection grate plate module (10), an injection conveying bottom plate (30) and a grate type pre-combustion furnace. The injection grate plate module (10) is composed of a shell (101), a wear-resistant castable (102) and at least two airflow nozzles (103) with outlets inclining upwards. Nozzles of the airflow nozzles (103) are all located on the material receiving face of the blowing grid plate module (10), and the material receiving face is the upper surface of the blowing grid plate module (10). In the material flow direction, the included angle gamma 1 formed by the spraying direction of the nozzle of the airflow nozzle (103) located on the rearmost side and the material receiving face of the blowing grid plate module (10) is 10-35 degrees, and the included angles formed by the spraying directions of the nozzles of the other airflow nozzles (103) and the material receiving face of the blowing grid plate module (10) are equal to the included angle gamma 1 or gradually reduced. The airflow entering the airflow nozzle (103) is obliquely and upwards sprayed out along the material receiving face, and the materials are driven to be upwards sprayed out to form a parabola path to rise and move forwards. According to the device, the problems of incomplete combustion, working condition fluctuation, crust blockage, NOx standard exceeding and the like caused by fossil fuel used by a sintering system can be reduced, and the purposes of increasing the use ratio of alternative fuel, stabilizing the thermal regulation of a kiln and realizing ultralow emission of the system are achieved.

Single chamber heater for manual feeding of solid fuels comprising a combustion space (1) defined by side walls (7) and a front wall (4), a horizontal grate (5) at the lower part and a rear wall (2) provided at the lower part above the horizontal grate (5) with a vertical grate (13) consisting of vertical ribs (8) adjacent to one side (8.1) to the rear wall of the combustion space (1), where a space is formed between the vertical ribs (8) facing into the combustion space (1), where the space between vertical ribs (8) is formed by channels (9) which on the side facing the combustion space (1) are terminated by a through vertical gap (11), wherein the clearance of channels (9) behind the through vertical gap (11) is at least 10% greater than the width (11.1) of the through vertical gap (11).