Fire grate block, fire grate section and incinerator

Abstract

The utility model is suitable for the technical field of waste incineration equipment, and provides a fire grate block, a fire grate section and an incinerator. According to the fire grate block, a water cooling channel is formed in a bearing part, cooling water is conveyed into the water cooling channel through a water inlet, and the cooling water flows through the water cooling channel and flows out through a water outlet; therefore, the effect of reducing the temperature of the fire grate block body is achieved. Meanwhile, primary air can be guided to penetrate from the bottom of the garbage materials to the top of the garbage materials through inclined arrangement of the air inducing holes, so that the primary air is in full contact with the garbage materials, and the combustion efficiency of the garbage materials is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of waste incineration equipment, and in particular relates to a grate block, a grate segment and an incinerator. Background Art

[0002] With the acceleration of urbanization, the output of domestic waste has increased sharply. The traditional landfill method has faced the problem of insufficient capacity, and incineration can effectively reduce the volume of garbage. Waste incineration is one of the main ways to achieve waste reduction, harmlessness and resource treatment. At present, waste incineration has gradually become the main way to treat waste. After modern incineration treatment, the volume of garbage can generally be reduced by 80%-90%. At the same time, it can eliminate various pathogens, convert harmful substances into harmless substances, and realize resource utilization.

[0003] The applicant has previously applied for a grate block for a garbage incineration system with application number 202223044062.1. Figure 5 As shown, it includes a grate base 1, a connecting end 2 is arranged at one end of the grate base 1, and second air holes 8 and first air holes 7 are respectively arranged on the top surface and the side surface of the end of the grate base 1 away from the connecting end 2. In the garbage incineration system, multiple grate bases 1 are arranged along the direction of garbage movement, and the second air holes 8 and the first air holes 7 are used for ventilation and oxygen supply, which can make the garbage materials fully contact with the oxygen in the air supply airflow, and the wind pressure airflow is uniformly ejected from the positions of the second air holes 8 and the first air holes 7, so that the garbage combustion speed is increased.

[0004] During actual use of the equipment of the above-mentioned prior patent, it was found that although the first air holes 7 and the second air holes 8 are respectively provided on the side wall and the top of the grate base 1 to increase the garbage combustion speed, when burning high calorific value garbage such as industrial garbage, the grate blocks are placed in a high-temperature working environment for a long time, which significantly reduces the mechanical properties of the grate and greatly shortens its service life. Utility Model Content

[0005] The present application provides a grate block, a grate section and an incinerator, which can solve the problem in the prior art that the grate block has a short service life due to being placed in a high-temperature working environment for a long time.

[0006] In a first aspect, the present application provides a grate block suitable for an incinerator, wherein the grate block comprises a bearing portion and a connecting portion and an air induction portion respectively arranged on opposite sides of the bearing portion, wherein the connecting portion is used to connect a grate crossbeam in the incinerator, wherein a water cooling channel for cooling is arranged in the bearing portion, and a water inlet and a water outlet are arranged on the bearing portion, wherein the water inlet and the water outlet are respectively communicated with two ports of the water cooling channel;

[0007] The air induction part is convexly arranged at the bottom of the bearing part, and is provided with air induction holes, which are arranged from one side of the air induction part toward the connecting part to the side away from the connecting part and inclined toward the plane where the top of the bearing part is located.

[0008] Optionally, a cavity is provided in the bearing portion, a plurality of baffles are provided in the cavity at intervals, and the cavity is divided by the plurality of baffles to form a tortuous water-cooling channel.

[0009] Optionally, the plurality of baffles and the bearing portion are integrally formed.

[0010] Optionally, an extending direction of the air ducting hole forms an angle α with a plane where the top of the bearing portion is located, and the angle α is 30° to 35°.

[0011] Optionally, the air induction hole has an air inlet arranged toward the connection portion and an air outlet arranged away from the connection portion, and the inner diameter of the air inlet is greater than the inner diameter of the air outlet.

[0012] Optionally, the connecting part and the air induction part are respectively arranged on the opposite side walls of the bearing part in the first direction, and connecting holes are provided on the opposite side walls of the bearing part in the second direction and / or the opposite side walls of the connecting part in the second direction, and the connecting holes are used to connect two side-by-side and adjacent grate blocks, and the second direction is perpendicular to the first direction.

[0013] Optionally, the water inlet and the water outlet are respectively located on two opposite side walls of the bearing portion in the second direction.

[0014] Optionally, the connecting portion is in the form of a U-shaped hook structure, and reinforcement pieces are provided on both inner and outer sides of the U-shaped hook structure.

[0015] In a second aspect, the present application provides a grate segment suitable for an incinerator, comprising a plurality of grate blocks as described above.

[0016] In a third aspect, the present application provides an incinerator for waste incineration, comprising the grate section as described above.

[0017] The above solution of the present application has the following beneficial effects:

[0018] The grate block provided in the present application is provided with a water cooling channel inside the bearing part, and cooling water is transported into the water cooling channel through the water inlet. The cooling water flows through the water cooling channel and flows out through the water outlet to take away the excess heat from various parts of the bearing part, thereby achieving the effect of reducing the temperature of the grate block body; at the same time, the inclined setting of the air induced holes can guide the primary air to penetrate from the bottom of the garbage material to the top of the garbage material, so that the primary air is in full contact with the garbage material, so as to improve the combustion efficiency of the garbage material.

[0019] Other beneficial effects of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a grate block provided in one embodiment of the present application;

[0022] Figure 2 A schematic diagram of the side cross-sectional structure of a grate block provided in one embodiment of the present application;

[0023] Figure 3 A schematic diagram of the side cross-sectional structure of a grate block provided in an embodiment of the present application when installed in an incinerator;

[0024] Figure 4 A schematic diagram of the top cross-sectional structure of a grate block provided in one embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the structure of the applicant's prior patent.

[0026] [Description of Reference Numerals]

[0027] 100, grate block;

[0028] 1. Connecting part;

[0029] 11. Reinforcement;

[0030] 2. Bearing part;

[0031] 21. Water cooling channel; 22. Water inlet; 23. Water outlet; 24. Baffle;

[0032] 3. Air induction unit;

[0033] 31. Air inlet; 32. Air inlet; 33. Air outlet;

[0034] 4. Connection hole. DETAILED DESCRIPTION

[0035] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0036] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0037] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0038] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0039] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0040] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0041] The grate block, grate segment and incinerator provided in the present application are exemplarily described below in conjunction with specific embodiments.

[0042] like Figure 1 and Figure 4As shown, the present application provides a grate block 100, which is suitable for an incinerator. The grate block 100 includes a connecting portion 1, a bearing portion 2 and an air induced draft portion 3 which are connected in sequence. The connecting portion 1 and the air induced draft portion 3 are respectively arranged on two opposite sides of the bearing portion 2. The connecting portion 1 is used to connect the grate beam in the incinerator. The bearing portion 2 is provided with a water cooling channel 21 for cooling. The bearing portion 2 is provided with a water inlet 22 and a water outlet 23, and the water inlet 22 and the water outlet 23 are respectively communicated with two ports of the water cooling channel 21; the air induced draft portion 3 is protruded from the bottom of the bearing portion 2, and the air induced draft portion 3 is provided with an air induced hole 31, which is arranged in a plane where the top of the bearing portion 2 is located, from one side of the air induced draft portion 3 toward the connecting portion 1 to the side away from the connecting portion 1.

[0043] In the above embodiment, the grate block 100 is connected to the grate beam in the incinerator through the connecting portion 1. In the incinerator, multiple grate blocks 100 are arranged along the direction of the garbage material, and the connecting portion 1 of each grate block 100 is downward and the air induction portion 3 is installed upward. When the incinerator is working, the garbage material is transported through multiple grate blocks 100, and cooling water is transported to the water cooling channel 21 through the water inlet 22. The cooling water flows through the water cooling channel 21 and flows out through the water outlet 23 to take away the excess heat from various parts of the bearing part 2, thereby achieving the effect of reducing the temperature of the grate block 100 body. It will not only not affect the garbage heat in the furnace, but also achieve the effect of stabilizing the mechanical properties and increasing the service life of the grate block 100 by reducing the temperature of the grate block 100 body. Since the connecting portion 1 of each grate block 100 in the incinerator is downwardly facing and the draft portion 3 is installed tilted upwardly, the present application tilts the draft holes 31 in the above manner so that when the grate block 100 is installed, the air outlet direction of the draft holes 31 is upward to guide the primary air to penetrate from the bottom of the garbage material to the top of the garbage material, thereby allowing the primary air to fully contact the garbage material to improve the combustion efficiency of the garbage material.

[0044] The grate block 100 provided in the present application is provided with a water cooling channel 21 inside the bearing part 2, and cooling water is transported into the water cooling channel 21 through the water inlet 22. The cooling water flows through the water cooling channel 21 and flows out through the water outlet 23 to take away the excess heat from various parts of the bearing part 2, thereby achieving the effect of reducing the temperature of the grate block 100 body; at the same time, the inclined setting of the air induced holes 31 can guide the primary air to penetrate from the bottom of the garbage material to the top of the garbage material, so that the primary air is in full contact with the garbage material to improve the combustion efficiency of the garbage material.

[0045] In one embodiment, if Figures 2 to 4 As shown, a cavity is provided in the bearing portion 2 , and a plurality of baffles 24 are provided in the cavity at intervals. The cavity is divided by the plurality of baffles 24 to form a tortuous water cooling channel 21 .

[0046] In the above embodiment, a tortuous water cooling channel 21 is provided in the bearing portion 2, which can increase the contact time and area of ​​the cooling water and the bearing portion 2, thereby improving the water cooling effect.

[0047] In a specific embodiment, Figure 3 As shown, the upper and lower ends of the multiple baffles 24 are respectively connected to the upper and lower ends of the cavity. The multiple baffles 24 can play a supporting role to prevent the top surface of the bearing part 2 from collapsing, thereby enhancing the stability of the bearing part 2.

[0048] In a specific embodiment, Figure 3 and Figure 4 As shown, the plurality of baffles 24 and the bearing portion 2 are in an integrated structure.

[0049] In the above embodiment, the plurality of baffles 24 and the bearing portion 2 are designed as an integral structure, which can increase the overall strength of the grate block 100 and improve its stability and durability.

[0050] In one embodiment, if Figure 3 As shown, the extension direction of the air induction hole 31 forms an angle α with the plane where the top of the bearing portion 2 is located, and the angle α is 30° to 35°.

[0051] In the above embodiment, the connecting portion 1 of each grate block 100 in the incinerator is downwardly facing, and the draft portion 3 is installed tilted upward. After installation, the grate block 100 is generally tilted upward by 18° with respect to the horizontal plane. Through the angle α between the extension direction of the draft hole 31 and the top of the bearing portion 2, the primary air passes through the draft hole 31 and enters the bottom layer of the garbage material, and then vertically penetrates the garbage material upward, so as to increase the contact area between the primary air and the garbage material, so as to make the garbage material burn more fully.

[0052] In a specific embodiment, Figures 2 to 4 As shown, the air induction hole 31 has an air inlet 32 ​​disposed toward the connection portion 1 and an air outlet 33 disposed away from the connection portion 1 , and the inner diameter of the air inlet 32 ​​is greater than the inner diameter of the air outlet 33 .

[0053] In the above embodiment, the inner diameter of the air outlet 33 is smaller than the inner diameter of the air inlet 32, so as to increase the flow rate of the primary air so that it can better pass through the garbage material.

[0054] In one embodiment, if Figure 1 and Figure 4 As shown, the connecting portion 1 and the air inducing portion 3 are respectively arranged on the opposite side walls of the bearing portion 2 in the first direction, and the opposite side walls of the bearing portion 2 in the second direction and / or the opposite side walls of the connecting portion 1 in the second direction are provided with connecting holes 4, and the connecting holes 4 are used for connecting two side-by-side and adjacent grate blocks 100, and the second direction is perpendicular to the first direction.

[0055] In the above embodiment, the connection holes 4 are mainly used for connecting two adjacent grate blocks 100 arranged side by side.

[0056] In one embodiment, if Figure 4 As shown, the water inlet 22 and the water outlet 23 are respectively located on two opposite side walls of the bearing portion 2 in the second direction.

[0057] In the above embodiment, the water inlet 22 and the water outlet 23 are respectively located on the opposite side walls of the bearing part 2 in the second direction. When multiple grate blocks 100 are arranged side by side on the grate beam in the same incinerator, the water inlet 22 and the water outlet 23 on the bearing part 2 of two adjacent grate blocks 100 can be connected in sequence. The water inlet 22 on one grate block 100 located on the outside is connected to the liquid outlet of the external cooling water device, and the water outlet 23 on the other grate block 100 located on the outside is connected to the liquid inlet of the cooling water device, so that the cooling water can flow between the cooling water device and multiple grate blocks 100.

[0058] In one embodiment, if Figures 1 to 4 As shown, the connecting portion 1 is in the shape of a U-shaped hook structure, and reinforcement members 11 are provided on both the inner and outer sides of the U-shaped hook structure.

[0059] In the above embodiment, the connection part 1 is configured as a U-shaped hook structure that is easy to install and disassemble, so that the grate block 100 can be installed, repaired, and replaced more quickly to improve practicality. At the same time, the reinforcement members 11 on both sides of the U-shaped hook structure can improve the mechanical strength of the connection part 1 to enhance the stability of the connection between the connection part 1 and the grate crossbeam in the incinerator.

[0060] Specifically, the reinforcement member 11 may be a plate-shaped reinforcement rib.

[0061] In a second aspect, the present application provides a grate segment suitable for an incinerator, comprising a plurality of grate blocks 100 as described in any of the above embodiments.

[0062] In the above embodiment, multiple grate blocks 100 are arranged side by side in the transverse direction and connected to the grate beams in the incinerator through the connecting part 1, and multiple grate blocks 100 are stacked and arranged in the longitudinal direction along the direction of the garbage material movement (i.e., the arrangement direction of the grate beams in the incinerator) to form the above-mentioned grate section.

[0063] In a third aspect, the present application provides an incinerator for waste incineration, comprising the grate section as described above.

[0064] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A grate block suitable for an incinerator, characterized in that: The grate block includes a bearing part and a connecting part and an air induction part respectively arranged on opposite sides of the bearing part, the connecting part is used to connect the grate crossbeam in the incinerator, a water cooling channel for cooling is arranged in the bearing part, and a water inlet and a water outlet are arranged on the bearing part, and the water inlet and the water outlet are respectively communicated with two ports of the water cooling channel; The air induction portion is protruding from the bottom of the bearing portion, and is provided with air induction holes. The air induction holes are arranged from a side of the air induction portion toward the connecting portion to a side away from the connecting portion and inclined toward a plane where the top of the bearing portion is located.

2. The grate block according to claim 1, characterized in that: A cavity is arranged in the bearing part, a plurality of baffles are arranged in the cavity at intervals, and the cavity is divided by the plurality of baffles to form the water cooling channel of a tortuous shape.

3. The grate block according to claim 2, characterized in that: The plurality of baffles and the bearing portion are in an integrated structure.

4. The grate block according to claim 1, characterized in that: An extending direction of the air induction hole forms an angle α with the plane where the top of the bearing portion is located, and the angle α is 30° to 35°.

5. The grate block according to claim 1, characterized in that: The air induction hole comprises an air inlet arranged toward the connection portion and an air outlet arranged away from the connection portion, and an inner diameter of the air inlet is greater than an inner diameter of the air outlet.

6. The grate block according to claim 1, characterized in that: The connecting portion and the air induction portion are respectively arranged on the opposite side walls of the bearing portion in the first direction, and the opposite side walls of the bearing portion in the second direction and / or the opposite side walls of the connecting portion in the second direction are provided with connecting holes, and the connecting holes are used for connecting two adjacent grate blocks arranged side by side, and the second direction is perpendicular to the first direction.

7. The grate block according to claim 6, characterized in that: The water inlet and the water outlet are respectively located on two opposite side walls of the bearing portion in the second direction.

8. The grate block according to claim 1, characterized in that: The connecting portion is in the shape of a U-shaped hook structure, and reinforcement pieces are arranged on both inner and outer sides of the U-shaped hook structure.

9. A grate section suitable for an incinerator, characterized in that: It comprises a plurality of grate blocks according to any one of claims 1 to 8.

10. An incinerator for waste incineration, characterized in that: Comprising the grate segment as claimed in claim 9.

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