Movable stepped combustion furnace

Abstract

The utility model provides a movable stepped combustion furnace which comprises a shell internally provided with a cavity and an air supply port arranged on the shell, a fuel feeding port is arranged at one end of the shell, and a high-temperature flue gas outlet is arranged at the other end of the shell, and is characterized in that a plurality of layers of stepped plates which are sequentially lapped in a staggered manner are arranged in the cavity of the shell from top to bottom; the highest step plate of the multiple layers of step plates is connected with the fuel feeding port in a matched mode, the rest step plates extend towards the high-temperature flue gas outlet, the heights of the rest step plates are reduced layer by layer, the multiple layers of step plates which are sequentially lapped in a staggered mode are divided into fixed step plates and movable step plates, and the movable step plates are connected with a translation driving mechanism. The horizontal moving driving mechanism drives the multiple layers of step plates to move in a telescopic mode front and back, fuel on the multiple layers of step plates continuously moves from the fuel feeding port to the high-temperature smoke outlet and is evenly laid on each layer of step plate, the combustion efficiency is effectively improved, and the combustion furnace can supply heat to the decomposing furnace by combusting biomass fuel or RDF fuel.

Description

Technical Field

[0001] The utility model relates to a combustion furnace, in particular to a mobile stepped combustion furnace, belonging to the technical field of design and manufacture of high-temperature combustion furnaces. Background Art

[0002] The cement kiln decomposition furnace is a device on the cement production line that decomposes the raw material limestone into calcium oxide and carbon dioxide through high temperature. Since the composition and structural characteristics of limestone have a direct impact on its thermal decomposition rate and thermal efficiency, the cement kiln decomposition furnace requires sufficient heat to drive the decomposition reaction, and the supply and distribution of heat are important factors affecting the temperature distribution and reaction rate in the decomposition furnace. Most of the heat energy required by the existing cement kiln decomposition furnace is provided by the combustion furnace, which mainly uses coal as fuel. However, during the coal combustion process, a large amount of smoke and toxic and harmful gases will be generated due to incomplete combustion, which is easy to cause serious pollution to the environment. At the same time, incomplete combustion also wastes coal resources. In order to reduce emissions, enterprises have to build complex filtration systems to recycle and filter flue gas, which increases land costs and construction costs, bringing unnecessary economic burdens to enterprises. Therefore, it is necessary to improve the existing technology. Summary of the invention

[0003] In order to solve the problems of pollution, waste of resources, high cost, etc. caused by the existing cement kiln decomposition furnace using coal as heat source fuel, the utility model provides a mobile stepped combustion furnace.

[0004] The utility model is completed through the following technical solutions: a mobile stepped combustion furnace, including a shell with a cavity therein, an air supply port arranged on the shell, a fuel feed port at one end of the shell, and a high-temperature flue gas outlet at the other end, characterized in that a plurality of stepped plates are arranged in sequence from top to bottom in the shell cavity, the highest layer of the plurality of stepped plates is matched with the fuel feed port, and the remaining step plates extend toward the high-temperature flue gas outlet and reduce their height layer by layer, and the plurality of stepped plates that are staggered and overlapped in sequence are divided into fixed step plates and movable step plates, and the movable step plates are connected to a translation driving mechanism so that the movable step plates can be driven by the translation driving mechanism to perform forward and backward telescopic movement, so that the fuel is evenly spread on each layer of the step plates through the movable step plates in the process of continuously moving from the fuel feed port to the high-temperature flue gas outlet, so that it is completely burned, providing high-temperature heat energy for the decomposition furnace while reducing the dust content of the flue gas and reducing pollution.

[0005] The shell is configured as a trapezoidal body surrounded by four side panels and a top panel and a bottom panel. A cavity is configured in the shell, and its shape is adapted to the shape of the shell. A fuel feed port is configured at a high position of a rear end side panel of the shell, a high-temperature flue gas outlet is configured at a low position of a front end side panel of the shell, and an air supply port is configured on a top panel of the shell. The fuel feed port is connected to an external fuel supply device, and the high-temperature flue gas outlet is connected to a decomposition furnace of a cement rotary kiln. The air supply port is connected to a tertiary air duct of the cement rotary kiln through a pipeline so that fuel can be supplied into the shell for combustion. The generated high-temperature flue gas enters the decomposition furnace to provide a heat source for decomposition of calcium carbonate.

[0006] The multi-layer step plates are all configured as horizontal plates, the front of the upper step plate is placed on the rear of the lower step plate, and the cavity above the multi-layer step plates is configured as a combustion chamber, so that the fuel can be evenly spread on the multi-layer step plates, so that the fuel can be evenly and fully burned in the combustion chamber.

[0007] The fixed step plates and the movable step plates are arranged alternately, with the fixed step plates connected to the inner walls of the shell cavity on both sides, the movable step plates connected to the translation drive mechanism at the bottom, and suspended in the combustion chamber on both sides, so that after the combustion enters from the fuel feed port through the dynamic and static combined step plates, it can be evenly spread on the fixed step plates through the movable step plates during the process of moving toward the high-temperature flue gas outlet, thereby realizing efficient and complete combustion of the coal.

[0008] The translation driving mechanism includes: an upper horizontal beam arranged transversely at the bottom of a plurality of movable step plates, a column whose upper end is connected to the bottom of the upper horizontal beam, and a lower end of the column is connected to a lower horizontal beam arranged longitudinally, the columns are spaced apart as two parallel ones, and the lower horizontal beams are spaced apart as two parallel ones, the upper horizontal beam at the tail end is directly connected to the lower horizontal beam, the upper horizontal beam at the head end and the middle is connected to the lower horizontal beam through the column, a connecting beam is arranged between the two columns at the head end, the connecting beam is connected to the inner end of the pull rod, and the outer end of the pull rod passes through a through hole arranged on the rear end side plate of the shell body, and is connected to the lower horizontal beam. One end of the driving connecting rod is hinged, and the other end of the driving connecting rod is hinged to the eccentric shaft arranged on the runner. The runner shaft is connected to the main shaft of the power machine. The two longitudinal lower horizontal beams are respectively provided with front and rear moving wheels, and the front and rear moving wheels are matched with the track arranged at the bottom of the shell cavity, so that when the main shaft of the power machine drives the runner to rotate, the eccentric shaft converts the rotational motion into linear motion to drive the pull rod to move back and forth, and the pull rod pulls the lower horizontal beam and the column on it to drive the upper horizontal beam and the moving step plate to move back and forth, thereby realizing the uniform transportation of fuel on the multi-layer step plates.

[0009] The utility model has the following advantages and effects: by adopting the above scheme, the multi-layer step plates are driven to telescopically move forward and backward through the translation driving mechanism, so that the fuel on the multi-layer step plates is continuously moved from the fuel feed port toward the high-temperature flue gas outlet and is evenly spread on each layer of the step plates, effectively improving the combustion efficiency, so that the combustion furnace can supply heat to the decomposition furnace by burning biomass fuel or RDF fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the utility model. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] The utility model provides a mobile stepped combustion furnace, comprising a shell 1 with a cavity therein, an air supply port 7 arranged on the shell 1, a fuel feed port 8 at one end of the shell 1, and a high-temperature flue gas outlet 3 at the other end. Multiple layers of stepped plates 2 are arranged in sequence from top to bottom in the cavity of the shell 1, the highest layer of the multiple layers of stepped plates 2 is matched with the fuel feed port 8, and the remaining layers of stepped plates extend toward the high-temperature flue gas outlet 3 and reduce their height layer by layer. The multiple layers of stepped plates 2 that are staggered and overlapped in sequence are divided into fixed stepped plates 6 and movable stepped plates 5, and the movable stepped plates 5 are connected to a translation driving mechanism so that the movable stepped plates 5 can be driven by the translation driving mechanism to move forward and backward telescopically, so that the fuel is evenly spread on each layer of stepped plates through the movable stepped plates 5 in the process of continuously moving from the fuel feed port 8 to the high-temperature flue gas outlet 3, so that the fuel is completely burned, and the dust content of the flue gas is reduced while providing high-temperature heat energy to the decomposition furnace, thereby reducing pollution.

[0013] The shell 1 is set as a trapezoidal body surrounded by four side plates and a top plate and a bottom plate. The cavity is set in the shell 1, and its shape is adapted to the shape of the shell 1. The fuel feed port 8 is set at a high position of the rear end side plate of the shell 1, and the high-temperature flue gas outlet 3 is set at a low position of the front end side plate of the shell 1. The air supply port 7 is set on the top plate of the shell 1. The fuel feed port 8 is connected to an external fuel supply device, and the high-temperature flue gas outlet 3 is connected to the decomposition furnace of the cement rotary kiln. The air supply port 7 is connected to the tertiary air duct of the cement rotary kiln through a pipeline, so that the fuel is supplied to the cavity of the shell 1 for combustion, and the combustion-supporting air is provided through the air supply port 7. The generated high-temperature flue gas is sent to the decomposition furnace through the flue gas outlet 3 to provide a heat source for the decomposition of calcium carbonate;

[0014] The multi-layer step plates 2 are all set as horizontal plates, the front part of the upper step plate is placed on the rear part of the lower step plate, and the cavity above the multi-layer step plates 2 is set as a combustion chamber 4, so that the fuel can be evenly laid on the multi-layer step plates 2, so that the fuel can be evenly and fully burned in the combustion chamber 4;

[0015] The fixed step plates 6 and the movable step plates 5 are arranged alternately, the two sides of the fixed step plates 6 are connected to the inner wall of the cavity 4 of the shell 1, the bottom of the movable step plates 5 is connected to the translation drive mechanism, and the two sides are suspended in the combustion chamber 4, so that after the combustion enters from the fuel feed port 8 through the movable and static combined step plates, it can be evenly spread on the fixed step plates 6 through the movable step plates 5 in the process of moving toward the high-temperature flue gas outlet, so as to achieve efficient and complete combustion of the coal;

[0016] The translation driving mechanism includes: an upper horizontal beam 9 arranged transversely at the bottom of a plurality of movable step plates 5, a column 10 whose upper end is connected to the bottom of the upper horizontal beam 9, and a lower end of the column 10 is connected to a lower horizontal beam 18 arranged longitudinally, and the columns 10 are arranged in two parallel intervals, and the lower horizontal beams 18 are arranged in two parallel intervals, and the upper horizontal beam 9 located at the tail end (the high-temperature flue gas outlet 3 side) is directly connected to the lower horizontal beam 18, and the upper horizontal beam 9 located at the head end (the fuel feed port 8 side) and the middle part is connected to the lower horizontal beam 18 through the column 10, and a connecting beam 11 is provided between the two columns 10 at the head end (the fuel feed port 8 side), and the connecting beam 11 is connected to the inner end of the pull rod 15, and the outer end of the pull rod 15 passes through the housing 1 After the through hole on the rear end side plate, it is hinged with one end of the driving connecting rod 14, and the other end of the driving connecting rod 14 is hinged with the eccentric shaft eccentrically arranged on the runner 13. The axis of the runner 13 is connected to the main shaft of the power machine 12. The two longitudinal lower horizontal beams 18 are respectively provided with front and rear moving wheels 16, and the front and rear moving wheels 16 are matched with the track 17 arranged at the bottom of the cavity of the shell 1, so that when the main shaft of the power machine 12 drives the runner 13 to rotate, the eccentric shaft converts the rotational motion into linear motion and drives the pull rod 15 to move back and forth. The pull rod 15 pulls the lower horizontal beam 18 and the column 10 thereon to drive the upper horizontal beam 9 and the movable step plate 5 to move back and forth, thereby realizing the uniform transportation of fuel on the multi-layer step plate 2.

[0017] The moving wheels 16 are arranged as double wheels with mirror images clamping the track 17, which not only eliminates the risk of derailment, but also protects the wheel-rail contact surface, ensuring the continuous, stable, safe and reliable operation of the equipment.

[0018] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0019] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A mobile stepped combustion furnace, comprising a shell with a cavity therein, an air supply port arranged on the shell, a fuel feed port at one end of the shell, and a high-temperature flue gas outlet at the other end, characterized in that The shell cavity is provided with multiple layers of staggered and overlapped plates from top to bottom, the highest layer of the multiple layers of the step plates is matched with the fuel feed port, and the remaining step plates extend toward the high-temperature flue gas outlet and decrease in height layer by layer. The multiple layers of the step plates are staggered and overlapped in sequence and are divided into fixed step plates and movable step plates, and the movable step plates are connected to the translation drive mechanism; The fixed step plates and the movable step plates are arranged alternately, the two sides of the fixed step plates are connected to the inner wall of the shell cavity, the bottom of the movable step plates is connected to the translation drive mechanism, and the two sides are suspended in the combustion chamber; The translation driving mechanism includes: an upper horizontal beam transversely arranged at the bottom of multiple movable step plates, a column whose upper end is connected to the bottom of the upper horizontal beam, and the lower end of the column is connected to the longitudinally arranged lower horizontal beam, the columns are spaced apart as two parallel beams, and the lower horizontal beams are spaced apart as two parallel beams. The upper horizontal beam at the tail end is directly connected to the lower horizontal beam, and the upper horizontal beam at the head end and the middle is connected to the lower horizontal beam through the column. A connecting beam is provided between the two columns at the head end, and the connecting beam is connected to the inner end of the pull rod. After the outer end of the pull rod passes through the through hole provided on the rear end side plate of the shell, it is hinged to one end of the driving connecting rod, and the other end of the driving connecting rod is hinged to the eccentric shaft provided on the rotating wheel. The rotating wheel shaft is connected to the main shaft of the power machine, and the two longitudinal lower horizontal beams are respectively provided with front and rear moving wheels, and the front and rear moving wheels are matched with the track provided at the bottom of the shell cavity.

2. The mobile stepped combustion furnace according to claim 1, characterized in that The shell is configured as a trapezoidal body surrounded by four side panels and a top plate and a bottom plate. A cavity is configured in the shell, and its shape is adapted to the shape of the shell. A fuel feed port is configured at a high position of a rear end side panel of the shell, a high-temperature flue gas outlet is configured at a low position of a front end side panel of the shell, an air supply port is configured on a top panel of the shell, the fuel feed port is connected to an external fuel supply device, the high-temperature flue gas outlet is connected to a cement kiln decomposition furnace, and the air supply port is connected to a tertiary air duct of a cement rotary kiln through a pipeline.

3. The mobile stepped combustion furnace according to claim 1, characterized in that The multi-layer step plates are all configured as horizontal plates, the front portion of the upper step plate is placed on the rear portion of the lower step plate, and the cavity above the multi-layer step plates is configured as a combustion chamber.

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