Hierarchical disturbance fire grate and incinerator

Abstract

The utility model relates to the field of incinerators, in particular to a hierarchical disturbance fire grate and an incinerator. The hierarchical perturbation fire grate comprises a plurality of fire grate modules which are all used for being arranged on a furnace body of an incinerator, and the fire grate modules are distributed at intervals in a stepped mode from top to bottom; the fire grate module comprises a fire grate shaft, a fire-resistant sleeve and a driving assembly; the fire grate shaft penetrates through the furnace body, and the axis of the fire grate shaft is parallel to the horizontal plane; the fire-resistant sleeve fixedly sleeves the fire grate shaft and is positioned in the furnace body; the driving assembly is in transmission connection with the fire grate shaft so as to drive the fire grate shaft to rotate around the axis of the fire grate shaft. The incinerator comprises a hierarchical disturbance fire grate. By means of the hierarchical disturbance fire grate, the technical problem that an existing incinerator cannot fully combust and decompose materials is solved, the materials in the incinerator can be overturned and disturbed layer by layer in a hierarchical mode, and the contact area between the materials and combustion-supporting air is increased.

Description

Technical Field

[0001] The utility model relates to the field of incinerators, in particular to a hierarchical disturbance grate and an incinerator. Background Art

[0002] Incinerators are used as incineration equipment for cement rotary kilns to burn solid waste or alternative fuels. At present, when existing incinerators are working, materials enter the furnace from the inlet of the incinerator, fall on the grate, and are then ignited by the high-temperature and high-oxygen combustion air introduced to burn and decompose. It should be pointed out that the materials piled at the bottom have the problem of incomplete combustion and decomposition because they cannot fully contact the combustion air. Utility Model Content

[0003] The utility model aims to provide a hierarchical disturbance grate and an incinerator to alleviate the technical problem that the existing incinerator cannot fully burn and decompose materials.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0005] In a first aspect, the hierarchical disturbance grate provided by the utility model comprises: a grate module, wherein the grate module is provided in plurality and is used to be arranged in a furnace body of an incinerator, and from top to bottom, the plurality of grate modules are spaced and distributed in a stepped manner;

[0006] The grate module comprises a grate shaft, a refractory sleeve and a driving assembly;

[0007] The grate shaft is used to penetrate the furnace body, and its axis is parallel to the horizontal plane;

[0008] The refractory sleeve is fixed to the grate shaft and is located inside the furnace body;

[0009] The driving assembly is drivingly connected to the grate shaft to drive the grate shaft to rotate around its own axis.

[0010] Further, the refractory sleeve includes a fixed tube and two wing plates;

[0011] The fixing cylinder is sleeved on the grate shaft;

[0012] The two wing plates are fixed to the side surfaces of the fixing tube and are symmetrically distributed about the axis of the fixing tube.

[0013] Furthermore, a groove is formed on the inner wall of the fixing tube, and the groove extends along the axial direction of the fixing tube;

[0014] A convex ridge is fixed on the side surface of the grate shaft, and the convex ridge is embedded in the groove.

[0015] Furthermore, the grate module further comprises a supporting assembly, wherein two supporting assemblies are provided and are separately arranged on two sections of the grate shaft outside the furnace body;

[0016] The support assembly includes a sealing seat, a bearing seat and a spherical roller bearing;

[0017] The sealing seat is fixed to the furnace body;

[0018] The bearing seat is fixed to a side of the sealing seat away from the furnace body;

[0019] The spherical roller bearing is arranged in the bearing seat and has a transition or interference fit with the grate shaft.

[0020] Furthermore, the support assembly also includes a heat insulation pad and a heat insulation sleeve sleeved on the grate shaft;

[0021] The heat insulation pad is fixed between the sealing seat and the furnace body, and the heat insulation sleeve is arranged in the sealing seat.

[0022] Furthermore, the grate shaft is a tube structure;

[0023] The grate module also includes a cooling assembly, which includes a water inlet pipe, a water outlet pipe, a flow sensor and a temperature sensor;

[0024] The water inlet pipe and the water outlet pipe are respectively arranged at two ends of the grate shaft, and are both connected to the grate shaft, and are also rotatably matched with the grate shaft so as to be rotatable around their respective axes;

[0025] The flow sensor and the temperature sensor are both arranged on the water outlet pipe.

[0026] Further, the driving assembly includes a rotating driving member, a driving sprocket, a driven sprocket and a roller chain;

[0027] The output end of the rotary drive member is fixedly connected to the driving sprocket;

[0028] The driven sprocket is fixed to one end of the grate shaft;

[0029] The roller chain is sleeved and tightened on the driving sprocket and the driven sprocket.

[0030] Furthermore, the driving assembly also includes a support seat;

[0031] The rotary drive member is fixed to the support seat;

[0032] The support seat is provided with a mounting hole, which extends vertically and is in a strip shape.

[0033] Furthermore, the grate module also includes a monitoring component, and the monitoring component is arranged on the driving sprocket.

[0034] In a second aspect, the incinerator provided by the utility model includes the aforementioned hierarchical disturbance grate.

[0035] Compared with the prior art, the hierarchical disturbance grate provided by the utility model has the following beneficial effects:

[0036] The hierarchical disturbance grate includes a grate module, a plurality of grate modules are provided, all of which are used to be set in the furnace body of the incinerator, and from top to bottom, the plurality of grate modules are spaced and distributed in a stepped manner; the grate module includes a grate shaft, a refractory sleeve and a driving assembly; the grate shaft is used to pass through the furnace body, and its axis is parallel to the horizontal plane; the refractory sleeve is fixed to the grate shaft and is located in the furnace body; the driving assembly is connected to the grate shaft in driving connection to drive the grate shaft to rotate around its own axis.

[0037] In the hierarchical disturbance grate, multiple grate modules are spaced apart and distributed in a stepped manner. Correspondingly, multiple grate shafts and refractory sleeves fixed on the grate shafts are also distributed in a stepped manner from top to bottom. Through the driving assembly, the grate shaft can rotate around its own axis and cause the refractory sleeve to rotate synchronously.

[0038] When in use, the hazardous waste entering the furnace body from the feed inlet falls directly on the 1# refractory sleeve (from top to bottom, the refractory sleeves are distinguished by 1#, 2#, 3#... below), and is ignited by the high-temperature and high-oxygen combustion-supporting air introduced from the lower part of the furnace body. After a period of static combustion and decomposition on the 1# refractory sleeve, the 1# refractory sleeve is tilted and flipped to the next level under the drive of the driving component, and the hazardous waste is dumped onto the 2# refractory sleeve. After the physical disturbance and flipping, the part that was previously piled at the bottom and incompletely burned and decomposed is disturbed and flipped, and then comes into contact with the combustion-supporting air for sufficient combustion and decomposition. Subsequently, the unburned or completely decomposed part is flipped and pushed by the multi-stage grate module in turn until it passes through all the refractory sleeves and falls into the ash outlet.

[0039] It can be seen that compared with the existing technology, the use of this hierarchical disturbance grate can realize the hierarchical and layer-by-layer turning disturbance of solid waste or alternative fuels and other materials in the incinerator. When multiple hierarchical grate modules are operated together, the residence time of solid waste or alternative fuels and other materials in the incinerator can be greatly extended, and the contact surface area between solid waste or alternative fuels and other materials and oxygen-containing tertiary air is increased, which is beneficial to the full combustion and decomposition of solid waste or alternative fuels and other materials in the incinerator.

[0040] The beneficial effects of the incinerator provided by the utility model are:

[0041] The incinerator provided by the utility model includes a hierarchical disturbance grate. Therefore, the technical advantages and effects achieved by the incinerator also include the technical advantages and effects achieved by the above-mentioned hierarchical disturbance grate, which will not be repeated here.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 A front view of the grate module provided by the embodiment of the utility model when in use;

[0045] Figure 2 A cross-sectional view of a grate module provided by an embodiment of the utility model along its longitudinal section;

[0046] Figure 3 A sectional view of a grate module provided by an embodiment of the utility model along its cross section;

[0047] Figure 4 A front view of the drive assembly provided by the embodiment of the utility model when in use;

[0048] Figure 5 A side view of the drive assembly provided by the embodiment of the utility model when in use;

[0049] Figure 6 A front view of a support base provided in an embodiment of the utility model;

[0050] Figure 7 A side view of a support base provided by an embodiment of the utility model;

[0051] Figure 8 A front view of the cooling assembly provided by the embodiment of the utility model when in use;

[0052] Fig. 9 A front view of the monitoring component provided by the embodiment of the utility model when in use;

[0053] Fig.10 A side view of the monitoring component provided by an embodiment of the utility model when in use.

[0054] icon:

[0055] 1-grate shaft; 11-convex ridge;

[0056] 2-refractory sleeve; 21-fixed tube; 22-wing plate;

[0057] 3-driving assembly; 31-rotating driving member; 32-driving sprocket; 33-driven sprocket; 34-roller chain; 35-support seat; 351-mounting hole;

[0058] 4-support assembly; 41-seal seat; 42-bearing seat; 43-spherical roller bearing; 44-insulation pad; 45-insulation sleeve;

[0059] 5-cooling assembly; 51-water inlet pipe; 52-water outlet pipe; 53-flow sensor;

[0060] 6- monitoring component; 61- supporting frame; 62- encoder; 63- fixing plate. DETAILED DESCRIPTION

[0061] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0062] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0063] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0064] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0065] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0067] At present, when the existing incinerator is working, the material enters the incinerator from the feed port, falls on the grate, and is then ignited by the high-temperature and high-oxygen combustion air introduced to perform combustion and decomposition. It should be pointed out that the material piled at the bottom has the problem of incomplete combustion and decomposition because it cannot fully contact the combustion air.

[0068] In view of this, the embodiment of the utility model provides a hierarchical disturbance grate, referring to Figures 1 to 10 The hierarchical disturbance grate comprises: a grate module, a plurality of grate modules are provided, all of which are used to be set in the furnace body of the incinerator, and from top to bottom, the plurality of grate modules are spaced and distributed in a stepped manner; the grate module comprises a grate shaft 1, a refractory sleeve 2 and a driving assembly 3; the grate shaft 1 is used to pass through the furnace body, and its axis is parallel to the horizontal plane; the refractory sleeve 2 is fixed to the grate shaft 1 and is located in the furnace body; the driving assembly 3 is connected to the grate shaft 1 in transmission to drive the grate shaft 1 to rotate around its own axis.

[0069] In the hierarchical disturbance grate, a plurality of grate modules are spaced apart and arranged in a stepped manner, and correspondingly, a plurality of grate shafts 1 and refractory sleeves 2 fixed on the grate shafts 1 are also arranged in a stepped manner from top to bottom; through the driving assembly 3, the grate shaft 1 can rotate around its own axis and cause the refractory sleeve 2 to rotate synchronously.

[0070] When in use, the hazardous waste entering the furnace body from the feed port directly falls on the 1# refractory sleeve 2 (from top to bottom, the refractory sleeves 2 are distinguished by 1#, 2#, 3#... below), and is ignited by the high-temperature and high-oxygen combustion-supporting air introduced from the lower part of the furnace body. After a period of static combustion and decomposition on the 1# refractory sleeve 2, driven by the driving component 3, the 1# refractory sleeve 2 is tilted and flipped to the next level, and the hazardous waste is dumped onto the 2# refractory sleeve 2. After the physical disturbance and flipping, the part that was previously piled at the bottom and incompletely burned and decomposed is disturbed and flipped, and then comes into contact with the combustion-supporting air for sufficient combustion and decomposition. Subsequently, the unburned or completely decomposed part is flipped and pushed by the multi-stage grate module in turn until it passes through all the refractory sleeves 2 and falls into the ash outlet.

[0071] It can be seen that compared with the existing technology, the use of this hierarchical disturbance grate can realize the hierarchical and layer-by-layer turning disturbance of solid waste or alternative fuels and other materials in the incinerator. When multiple hierarchical grate modules are operated together, the residence time of solid waste or alternative fuels and other materials in the incinerator can be greatly extended, and the contact surface area between solid waste or alternative fuels and other materials and oxygen-containing tertiary air is increased, which is beneficial to the full combustion and decomposition of solid waste or alternative fuels and other materials in the incinerator.

[0072] It should be added here that, optionally, there are a total of 8 grate modules, which are arranged in a stepped manner in the furnace and divided into two layers, an upper layer and a lower layer, with 4 grate modules in each layer, which can be numbered 1 to 8# from top to bottom.

[0073] refer to Figures 1 to 3 The grate module also includes a supporting assembly 4, which is provided with two supporting assemblies 4 and is respectively arranged on the left and right sections of the grate shaft 1 outside the furnace body; the supporting assembly 4 includes a sealing seat 41, a bearing seat 42 and a spherical roller bearing 43; the sealing seat 41 is fixed to the furnace body; the bearing seat 42 is fixed to the side of the sealing seat 41 away from the furnace body; the spherical roller bearing 43 is arranged in the bearing seat 42 and has a transition or interference fit with the grate shaft 1.

[0074] Specifically, refer to Figure 1 and Figure 2 The sealing seat 41 and the incinerator body are connected with positioning pins at both ends, which are used as positioning points after the sealing seats 41 on both sides are installed and adjusted in place. This can effectively avoid the displacement of the sealing seat 41 caused by the vibration of the sealing seat 41 in the later stage, and is also more convenient for subsequent maintenance and disassembly and alignment.

[0075] In the above, a heat insulating pad 44 is installed between the sealing seat 41 and the furnace body. The heat insulating pad 44 is made of the heat insulating material aluminum silicate fiber felt. A heat insulating sleeve 45 is installed between the sealing seat 41 and the grate shaft 1. The heat insulating sleeve 45 is also made of aluminum silicate fiber felt. Here, the aluminum silicate fiber felt can effectively isolate the high temperature inside the incinerator body to avoid smoke and fire when the incinerator is under positive pressure. At the same time, as a sealing element between the grate shaft 1 and the sealing seat 41, the heat insulating sleeve 45 is a bellows as a flexible material arranged in the sealing seat 41 and firmly fixed between the sealing seat 41 and the grate shaft 1. It can produce a certain amount of deformation under pressure, thereby ensuring the sealing effect at this location.

[0076] As mentioned above, the bearing seat 42 is connected to the sealing seat 41 through internal and external stoppers and a bolt assembly. The internal and external stoppers can effectively ensure the coaxiality and flatness of the inner holes of the bearing seat 42 and the inner holes of the sealing seat 41. The bearing seat 42 is equipped with a spherical roller bearing 43 and a lip seal ring to fix and seal the grate shaft 1.

[0077] Continue with the above and combine Figure 3 The refractory sleeve 2 includes a fixed tube 21 and two wing plates 22. The two wing plates 22 are fixed to the sides of the fixed tube 21 and are symmetrically distributed about the axis of the fixed tube 21 for receiving materials. The refractory sleeve 2 is made in sections, and each adjacent two pieces adopt a stopper form to ensure the installation fixed size. At the same time, two grooves distributed at a certain angle are reserved inside the fixed tube 21 of each section of the refractory sleeve 2, and the grooves correspond to the two convex ridges 11 welded on the grate shaft 1. During installation, only a certain thickness of glue mud needs to be applied on the joint surface of the grate shaft 1 and the refractory sleeve 2, and then the refractory sleeve 2 is installed in a fixed position from one side of the grate shaft 1. After the glue mud is solidified, the assembly of the refractory sleeve 2 and the grate shaft 1 is completed. The refractory sleeve 2 is made of special material, which can maintain extremely high wear resistance and anti-scaling performance in high temperature environment. This performance can not only greatly extend its own service life, but also protect the internal grate shaft 1, avoiding direct contact between the grate shaft 1 and materials such as solid waste or alternative fuels, thereby causing changes in the physical properties of the grate shaft 1 material and affecting its material properties.

[0078] Regarding drive component 3, specifically:

[0079] refer to Figures 4 to 7 The driving assembly 3 includes a rotating driving member 31, a driving sprocket 32, a driven sprocket 33 and a roller chain 34; the output end of the rotating driving member 31 is fixedly connected to the driving sprocket 32; the driven sprocket 33 is fixed to one end of the grate shaft 1; the roller chain 34 is sleeved and tightened on the driving sprocket 32 ​​and the driven sprocket 33.

[0080] Specifically, the rotary drive member 31 can adopt a rotary swing cylinder, and the rotary swing cylinder is powered by a hydraulic station. A protective cover is installed on the outside of the driving sprocket 32, the driven sprocket 33 and the roller chain 34. A grease nozzle is installed above the protective cover corresponding to the roller chain 34, and an oil receiving device is provided below the protective cover. Such a design can effectively prevent gear oil from dripping and protect the surrounding environment. A heat insulation plate is installed near the rotary swing cylinder and the furnace body to reduce the impact of radiant heat on the cylinder. Before the rotary swing cylinder, the driving sprocket 32, the driven sprocket 33 and the roller chain 34 are operated, they must be coated with molybdenum disulfide lithium-based grease with a temperature resistance of more than 150°C. An oil nozzle is installed on the rotary swing cylinder, and the sprocket and chain can be directly coated.

[0081] In connection with the above, the rotary swing oil cylinder is installed on the furnace body through the support seat 35. The installation positions of the rotary swing oil cylinder and the support seat 35 are both provided with size adjustment, so that the relative position of the grate shaft 1 and the rotary swing oil cylinder can be adjusted as required. Here, the installation of the support seat 35 and the furnace body is taken as an example. The support seat 35 is provided with a mounting hole 351, and the mounting hole 351 extends along the Z direction (i.e., vertically) and is in the shape of a long strip. By adjusting the position of the bolt in the mounting hole 351, the vertical position of the support seat 35 can be adjusted accordingly, that is, the vertical position of the rotary swing oil cylinder, so that the roller chain 34 can be in a tensioned state to ensure the effectiveness of the transmission. In addition, regarding the position adjustment of the rotary swing oil cylinder in the X direction (i.e., horizontal direction) and the Y direction (i.e., vertical direction) of the horizontal plane, its design can refer to the existing technology and will not be repeated here.

[0082] refer to Figure 8 The grate shaft 1 is a tubular structure; the grate module also includes a cooling assembly 5, which includes a water inlet pipe 51, a water outlet pipe 52, a flow sensor 53 and a temperature sensor; the water inlet pipe 51 and the water outlet pipe 52 are respectively arranged at both ends of the grate shaft 1, and are both connected to the grate shaft 1, and are also rotatably matched with the grate shaft 1 so as to be rotatable around their respective axes; the flow sensor 53 and the temperature sensor are both arranged on the water outlet pipe 52.

[0083] When in use, cooling water is passed through the grate shaft 1. The cooling water adopts the principle of bottom-in and top-out to take away the heat conducted from the grate shaft 1, thereby protecting the grate shaft 1 and the refractory sleeve 2 thereon. By installing a flow sensor 53 and a temperature sensor on the water outlet pipe 52, the return water temperature and water consumption of the cooling water in the grate shaft 1 can be monitored at any time. In addition, by setting alarm values ​​respectively, real-time adjustments can be made in combination with the entire process situation, thereby protecting the rotating and refractory components in the furnace.

[0084] refer to Fig. 9 and Fig.10 The grate module also includes a monitoring component 6, which is arranged on the driving sprocket 32.

[0085] Specifically, the monitoring assembly 6 is composed of a support frame 61, a fixing key, an encoder 62 and a fixing plate 63 installed on the driving sprocket 32, wherein the fixing plate 63 is fixed to the driving sprocket 32, the support frame 61 is fixed to the fixing plate 63 by a fixing key, and the encoder 62 is installed on the support frame 61. With such a design, the monitoring assembly 6 can display the position information of the rotation of the grate shaft 1 and control the running track of the grate shaft 1 in real time through the control program. Once the grate shaft 1 is abnormal or stops rotating, a signal alarm can be issued in the setting program, and the corresponding operation can be taken in time through the alarm control room.

[0086] The hierarchical disturbance grate provided in the embodiment of the utility model serves as the internal core component of the external incinerator for the online cement rotary kiln. It can physically disturb and disperse the burning solid waste or alternative fuels and other materials, has high combustion efficiency, controllable combustion time in the furnace, and simple overall structure.

[0087] As mentioned above, the transmission and sealing components of the hierarchical disturbance grate are all outside the furnace body, which is convenient for daily inspection, maintenance and repair. The hierarchical disturbance grate can realize hierarchical and layer-by-layer turning disturbance of solid waste or alternative fuels and other materials in the incinerator. When multiple hierarchical grate modules are operated together, the residence time of solid waste or alternative fuels and other materials in the incinerator can be greatly prolonged, and the contact surface area between solid waste or alternative fuels and other materials and oxygen-containing tertiary air is increased, which is beneficial to the combustion and decomposition of solid waste or alternative fuels and other materials in the incinerator.

[0088] Further to the above, the lower part of the incinerator body is directly connected to the decomposition furnace through a slag discharge pipe, and residual materials such as solid waste or alternative fuels can enter the decomposition furnace for secondary combustion or decomposition. The upper part of the incinerator body is connected to the decomposition furnace through an air outlet pipe, and the flue gas produced after the combustion or decomposition of materials such as solid waste or alternative fuels directly enters the decomposition furnace through the air outlet pipe.

[0089] The embodiment of the utility model also provides an incinerator, which includes a hierarchical disturbance grate. Therefore, the technical advantages and effects achieved by the incinerator also include the technical advantages and effects achieved by the above-mentioned hierarchical disturbance grate, which will not be repeated here.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A hierarchical disturbance grate, characterized in that: include: A grate module, wherein a plurality of the grate modules are provided, all of which are used to be arranged in the furnace body of the incinerator, and from top to bottom, the plurality of the grate modules are spaced apart and distributed in a stepped manner; The grate module comprises a grate shaft (1), a refractory sleeve (2) and a driving assembly (3); The grate shaft (1) is used to penetrate the furnace body, and its axis is parallel to the horizontal plane; The refractory sleeve (2) is fixed to the grate shaft (1) and is located inside the furnace body; The driving assembly (3) is drivingly connected to the grate shaft (1) to drive the grate shaft (1) to rotate around its own axis.

2. The hierarchical disturbance grate according to claim 1, characterized in that: The refractory sleeve (2) comprises a fixing tube (21) and two wing plates (22); The fixing cylinder (21) is sleeved on the grate shaft (1); The two wing plates (22) are fixed to the side surfaces of the fixing cylinder (21) and are symmetrically distributed about the axis of the fixing cylinder (21).

3. The hierarchical disturbance grate according to claim 2, characterized in that: The inner wall of the fixing cylinder (21) is recessed to form a groove, and the groove extends along the axial direction of the fixing cylinder (21); A convex ridge (11) is fixed on the side surface of the grate shaft (1), and the convex ridge (11) is embedded in the groove.

4. The hierarchical disturbance grate according to claim 1, characterized in that: The grate module further comprises a support assembly (4), wherein two support assemblies (4) are provided and are respectively arranged on two sections of the grate shaft (1) outside the furnace body; The support assembly (4) comprises a sealing seat (41), a bearing seat (42) and a spherical roller bearing (43); The sealing seat (41) is fixed to the furnace body; The bearing seat (42) is fixed to a side of the sealing seat (41) away from the furnace body; The spherical roller bearing (43) is arranged in the bearing seat (42) and is in transition or interference fit with the grate shaft (1).

5. The hierarchical disturbance grate according to claim 4, characterized in that: The support assembly (4) further comprises a heat insulating pad (44) and a heat insulating sleeve (45) sleeved on the grate shaft (1); The heat insulation pad (44) is fixed between the sealing seat (41) and the furnace body, and the heat insulation sleeve (45) is arranged in the sealing seat (41).

6. The hierarchical disturbance grate according to claim 1, characterized in that: The grate shaft (1) is a tubular structure; The grate module further comprises a cooling assembly (5), wherein the cooling assembly (5) comprises a water inlet pipe (51), a water outlet pipe (52), a flow sensor (53) and a temperature sensor; The water inlet pipe (51) and the water outlet pipe (52) are respectively arranged at two ends of the grate shaft (1), and are both connected to the grate shaft (1), and are also rotatably matched with the grate shaft (1) so as to be rotatable around their respective axes; The flow sensor (53) and the temperature sensor are both arranged on the water outlet pipe (52).

7. The hierarchical disturbance grate according to any one of claims 1 to 6, characterized in that: The driving assembly (3) comprises a rotating driving member (31), a driving sprocket (32), a driven sprocket (33) and a roller chain (34); The output end of the rotary drive member (31) is fixedly connected to the driving sprocket (32); The driven sprocket (33) is fixed to one end of the grate shaft (1); The roller chain (34) is sleeved and tightened on the driving sprocket (32) and the driven sprocket (33).

8. The hierarchical disturbance grate according to claim 7, characterized in that: The driving assembly (3) further comprises a supporting seat (35); The rotary drive member (31) is fixed to the support seat (35); The support seat (35) is provided with a mounting hole (351), and the mounting hole (351) extends vertically and is in a long strip shape.

9. The hierarchical disturbance grate according to claim 7, characterized in that: The grate module further comprises a monitoring component (6), wherein the monitoring component (6) is arranged on the driving sprocket (32).

10. An incinerator, characterized in that: It comprises the hierarchical disturbance grate as described in any one of claims 1 to 9.

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