Grate structure of garbage incinerator

Abstract

The utility model provides a garbage incinerator fire grate structure which comprises a fixed fire grate segment and a movable fire grate segment, empty grooves are formed in the bottom face of the fixed fire grate segment and the bottom face of the movable fire grate segment, material pushing blocks are further installed at the front end of the fixed fire grate segment and the front end of the movable fire grate segment, and chamfers are formed in the front end faces of the material pushing blocks. An airflow channel is further formed in the pushing block, one end of the airflow channel communicates with the empty grooves in the fixed fire grate segments and the movable fire grate segments, and the other end of the airflow channel is formed in a chamfer of the front end face of the pushing block. And the airflow channel is obliquely arranged downwards. When air enters the airflow channel through the empty groove, airflow jet is formed at the chamfer; crushed garbage is stirred by airflow, so that the accumulation and adhesion conditions are reduced; the crushed garbage is looser, so that the contact area between the crushed garbage and air is increased in subsequent incineration; due to the design that the airflow channel is inclined downwards, the situation that the crushed garbage is blown out of the fixed fire grate segment and the movable fire grate segment by airflow is reduced, and air can be continuously blown into the bottom of the crushed garbage.

Description

Technical Field

[0001] The utility model relates to the field of waste incineration, in particular to a grate structure of a waste incinerator. Background Art

[0002] A waste incinerator is a harmless treatment device commonly used in medical and domestic waste, and animal harmless treatment. Its principle is to use the combustion of fuels such as coal, fuel oil, and gas to incinerate and carbonize the objects to be treated at high temperatures to achieve the purpose of disinfection treatment. At present, the mechanical grate furnace is the most widely used waste incineration technology. The mechanical grate furnace usually adopts a reciprocating grate structure. The reciprocating grate structure includes multiple groups of movable grate rows and multiple groups of fixed grate rows. The movable grate row is composed of a plurality of movable grate plates, and the fixed grate row is also composed of a plurality of fixed grate plates. The movable grate rows and the fixed grate rows are arranged at intervals, and a driving device is also included. The driving device is used to push the movable grate row to move on the fixed grate row. During operation, the shredded waste enters the inclined downward grate through the feed hopper. Due to the staggered movement between the movable grate row and the fixed grate row, the shredded waste is pushed downward, so that the shredded waste passes through each area on the grate in turn for full treatment.

[0003] However, in actual operation, since the shredded waste is inevitably piled up and adhered together during incineration, it cannot fully contact with air, resulting in insufficient combustion efficiency and finally failing to meet the treatment requirements. Summary of the Utility Model

[0004] In order to reduce the situation where the shredded waste cannot fully contact with air, the present application provides a grate structure of a waste incinerator.

[0005] The grate structure of a waste incinerator provided by the present application adopts the following technical solutions:

[0006] A grate structure of a waste incinerator includes fixed grate plates and movable grate plates. Empty grooves are formed on the bottom surfaces of the fixed grate plates and the movable grate plates. Pushing blocks are further installed on the front ends of the fixed grate plates and the movable grate plates. Chamfers are formed on the front end surfaces of the pushing blocks. Air flow channels are further formed in the pushing blocks. One end of each air flow channel communicates with the empty grooves in the fixed grate plates and the movable grate plates, and the other end is opened on the chamfers of the front end surfaces of the pushing blocks. The air flow channels are arranged obliquely downward.

[0007] Through the above technical solution, when air enters the air flow channel through the empty slot, a local air flow jet effect will be formed at the chamfer; the air flow agitates the garbage fragments, reducing the accumulation and adhesion; making the garbage fragments looser, thus increasing the contact area with air during subsequent incineration; and the design of the inclined downward air flow channel reduces the situation where the air flow blows the garbage fragments out of the fixed grate bars and movable grate bars, and can continuously blow air into the bottom of the garbage fragments.

[0008] Preferably, a honeycomb grid plate is also inclinedly installed in the air flow channel and is flush with the outer end face of the chamfer of the pushing block, and the mesh holes of the honeycomb grid plate are inclined downward.

[0009] Through the above technical solution, the honeycomb grid plate has the ability not to deform or crack easily in a high-temperature environment, and at the same time has good fluidity; and the design of the honeycomb grid plate divides a stream of air into multiple streams of air, reducing the cross-sectional area of air flow, so as to increase the flow rate under a certain air flow volume, and enhance the kinetic energy of the air flow, and further enhance the pushing ability of the air flow; finally reducing the situation where the garbage fragments are blocked in the air flow channel.

[0010] Preferably, a plurality of partition plates are also inserted in the empty slot along the front-rear direction, and the empty slot is divided into multiple regions.

[0011] Through the above technical solution, the partition plates reduce the cross-sectional area of the empty slot, so as to increase the air flow rate and enhance the kinetic energy on the premise of unchanged air flow volume; thus enhancing the mixing effect of air and garbage fragments, and finally further enhancing the combustion efficiency.

[0012] Preferably, a first stop block is installed on the movable grate bar, a V-shaped groove is opened in the first stop block along the front-rear direction, chamfers are opened on all four faces of the first stop block, and the outer end face of the chamfer opened on the front end face of the first stop block is flush with the outer end face of the chamfer of the pushing block.

[0013] Through the above technical solution, the chamfers at the left and right ends of the first stop block will form the same V-shaped groove after the first stop blocks are joined together; and when the fixed grate bar and the movable grate bar move alternately, the V-shaped groove will intercept the large and adhered garbage fragments and separate them, so as to expand the contact area between the garbage and air and enhance the combustion efficiency of the garbage fragments.

[0014] Preferably, a second stop block is installed on the fixed grate bar, the second stop block is arc-shaped, and the circumferential surface of the second stop block is flush with the outer end face of the chamfer of the pushing block.

[0015] Through the above technical solution, since the second stopper is arc-shaped and has a relatively low height; when the fixed grate bars and the movable grate bars move alternately, the waste fragments pass through the second stopper from the circumferential surface; thereby forcing the waste fragments to roll on the circumferential surface to increase the contact area with the air, thus enhancing the combustion efficiency of the waste fragments.

[0016] Preferably, ventilation grooves are respectively formed on the left and right sides of the fixed grate bars and the movable grate bars, and a plurality of ventilation holes are further formed on the ventilation grooves, and the ventilation holes are communicated with the empty grooves inside the fixed grate bars and the movable grate bars.

[0017] Through the above technical solution, the design of the ventilation grooves and the ventilation holes enhances the air circulation capacity between the grate bars; during the combustion process, air can more smoothly enter the empty grooves through the ventilation grooves and the ventilation holes, and then be mixed with the waste fragments through the air flow channels.

[0018] Preferably, clamping grooves are formed at the rear ends of the fixed grate bars and the movable grate bars, and the clamping grooves are used to install the fixed grate bars and the movable grate bars in the grate; positioning blocks are further arranged in the clamping grooves.

[0019] Through the above technical solution, the design of the clamping grooves makes the installation process more standardized and fast, reducing the installation time and labor cost; while the positioning blocks can ensure the accurate positioning of the fixed grate bars and the movable grate bars during the installation process, preventing the grate bars from shifting or being misaligned during the installation process, thus ensuring the overall flatness and stability of the grate.

[0020] The technical effects of the present utility model are mainly reflected in the following aspects:

[0021] 1. By designing the air flow channels, the present utility model stirs the waste fragments with the air flow, reducing the accumulation and adhesion; making the waste fragments looser, thus increasing the contact area with the air during subsequent incineration;

[0022] 2. By installing a honeycomb grid plate in the air flow channels, the present utility model divides a single air flow into multiple air flows, reducing the cross-sectional area of the air flow passage, thereby accelerating the flow rate under a certain air flow volume and enhancing the kinetic energy of the air flow, and further enhancing the pushing ability of the air flow; ultimately reducing the situation where waste fragments block in the air flow channels;

[0023] 3. By arranging the first stopper and the second stopper, the present utility model forces the waste fragments to be divided and flipped during movement, thus enhancing the combustion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0025] Figure 2Schematic cross-sectional view of the movable grate bar of the embodiment of the present application in the front-rear direction.

[0026] Reference numerals: 1, fixed grate bar; 2, movable grate bar; 3, empty slot; 4, pusher block; 41, air flow channel; 5, honeycomb grid plate; 51, mesh hole; 6, partition board; 7, first stop block; 71, V-shaped groove; 8, second stop block; 9, ventilation slot; 91, ventilation hole; 10, card slot; 20, positioning block. Detailed implementation manners

[0027] The following will further elaborate on the detailed implementation manners of the present utility model in conjunction with the attached Figure 1-2 drawings, so as to make the technical solutions of the present utility model easier to understand and master.

[0028] The embodiment of the present application discloses a grate structure of a waste incinerator:

[0029] Referring to Figure 1 , a grate structure of a waste incinerator includes a fixed grate bar 1 and a movable grate bar 2. Empty slots 3 are provided on the bottom surfaces of the fixed grate bar 1 and the movable grate bar 2. Pusher blocks 4 are also installed at the front ends of the fixed grate bar 1 and the movable grate bar 2, and chamfers are provided on the front end faces of the pusher blocks 4. An air flow channel 41 is also provided in the pusher block 4. One end of the air flow channel 41 communicates with the empty slots 3 in the fixed grate bar 1 and the movable grate bar 2, and the other end is opened on the chamfer of the front end face of the pusher block 4; the air flow channel 41 is inclined downward. When air enters the air flow channel 41 through the empty slot 3, a local air flow jet effect will be formed at the chamfer; the air flow stirs the waste fragments, reducing the accumulation and adhesion situation; making the waste fragments more loose, thereby increasing the contact area with air during subsequent incineration; and the design of the inclined downward air flow channel 41 reduces the situation that the air flow blows the waste fragments out of the fixed grate bar 1 and the movable grate bar 2, and can continuously blow air into the bottom of the waste fragments. At the same time, the design of the pusher block 4 facilitates the operator to replace and repair the air flow channel 41 after it is damaged.

[0030] Referring to Figure 1-2 , a honeycomb grid plate 5 is also inclinedly installed in the air flow channel 41 and is flush with the outer end face of the chamfer of the pusher block 4. The mesh holes 51 of the honeycomb grid plate 5 are inclined downward. The honeycomb grid plate 5 has the ability not to deform or crack easily in a high-temperature environment, and at the same time has good fluidity; and the design of the honeycomb grid plate 5 divides a single air flow into multiple air flows, reducing the cross-sectional area of the air flow, thereby increasing the flow velocity under a certain air flow rate and enhancing the kinetic energy of the air flow, and further enhancing the pushing ability of the air flow; ultimately reducing the situation that waste fragments are blocked in the air flow channel 41.

[0031] Referring to Figure 2, a plurality of partition plates 6 are also inserted in the empty slot 3 along the front-back direction, and the empty slot 3 is divided into multiple regions. The partition plates 6 reduce the cross-sectional area of the empty slot 3, thereby accelerating the air flow velocity and enhancing the kinetic energy on the premise of constant air flow; thus enhancing the mixing effect of air and waste fragments, and ultimately further enhancing the combustion efficiency.

[0032] Refer to Figure 1-2 , a first stop block 7 is installed on the movable grate bar 2. The first stop block 7 is provided with a V-shaped groove 71 along the front-back direction. Chamfers are provided on all four surfaces of the first stop block 7. The outer end surface of the chamfer provided on the front end surface of the first stop block 7 is flush with the outer end surface of the chamfer of the pusher block 4. The chamfers at the left and right ends of the first stop block 7 will form the same V-shaped groove 71 after the first stop blocks 7 are joined together; when the fixed grate bar 1 and the movable grate bar 2 move alternately, the V-shaped groove 71 will intercept large pieces of adhered waste fragments and separate them, so as to expand the contact area between the waste and the air and enhance the combustion efficiency of the waste fragments.

[0033] Refer to Figure 1 , a second stop block 8 is installed on the fixed grate bar 1. The second stop block 8 is arc-shaped, and the circumferential surface of the second stop block 8 is flush with the outer end surface of the chamfer of the pusher block 4. Since the second stop block 8 is arc-shaped and has a relatively low height; when the fixed grate bar 1 and the movable grate bar 2 move alternately, the waste fragments pass through the second stop block 8 from the circumferential surface; thus forcing the waste fragments to roll on the circumferential surface to increase the contact area with the air, thereby enhancing the combustion efficiency of the waste fragments.

[0034] Refer to Figure 1 , ventilation grooves 9 are respectively provided on the left and right sides of the fixed grate bar 1 and the movable grate bar 2. A plurality of ventilation holes 91 are also provided on the ventilation grooves 9, and the ventilation holes 91 are communicated with the empty slot 3 inside the fixed grate bar 1 and the movable grate bar 2. The design of the ventilation grooves 9 and the ventilation holes 91 enhances the air circulation capacity between the grate bars; during the combustion process, air can more smoothly enter the empty slot 3 through the ventilation grooves 9 and the ventilation holes 91, and then be mixed with the waste fragments through the air flow channel 41.

[0035] Refer to Figure 1-2 , clamping grooves 10 are respectively provided at the rear ends of the fixed grate bar 1 and the movable grate bar 2. The clamping grooves 10 are used to install the fixed grate bar 1 and the movable grate bar 2 in the grate; positioning blocks 20 are also fixed in the clamping grooves 10. The design of the clamping grooves 10 makes the installation process more standardized and fast, reducing the installation time and labor cost; while the positioning blocks 20 can ensure the accurate positioning of the fixed grate bar 1 and the movable grate bar 2 during the installation process, preventing the grate bars from shifting or being misaligned during the installation process, thereby ensuring the overall flatness and stability of the grate. At the same time, the difference between the structure of the fixed grate bar 1 and the structure of the movable grate bar 2 is only the difference between the first stop block 7 and the second stop block 8.

[0036] Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. A waste incinerator grate structure, comprising a fixed grate plate (1) and a movable grate plate (2), wherein the bottom surfaces of the fixed grate plate (1) and the movable grate plate (2) are both provided with empty grooves (3), characterized in that: A pusher block (4) is also installed on the front end of the fixed grate plate (1) and the movable grate plate (2), and a chamfer is provided on the front end surface of the pusher block (4); an air flow channel (41) is also provided in the pusher block (4), one end of the air flow channel (41) is connected to the empty groove (3) in the fixed grate plate (1) and the movable grate plate (2), and the other end is provided on the chamfer of the front end surface of the pusher block (4); the air flow channel (41) is arranged to be inclined downward.

2. A waste incinerator grate structure according to claim 1, characterized in that: A honeycomb grid plate (5) is also obliquely installed in the airflow channel (41) and is flush with the chamfered outer end surface of the pusher block (4). The mesh holes (51) of the honeycomb grid plate (5) are arranged obliquely downward.

3. The grate structure of a garbage incinerator according to claim 1, characterized in that: A plurality of partitions (6) are inserted into the empty slot (3) along the front-to-back direction, and the empty slot (3) is divided into a plurality of areas.

4. The grate structure of a garbage incinerator according to claim 1, characterized in that: A first stopper (7) is installed on the movable grate plate (2), the first stopper (7) is provided with a V-shaped groove (71) along the front-to-back direction, four faces of the first stopper (7) are provided with chamfers, and the chamfered outer end face provided on the front end face of the first stopper (7) is flush with the chamfered outer end face of the pusher block (4).

5. The grate structure of a garbage incinerator according to claim 1, characterized in that: A second stopper (8) is installed on the fixed grate plate (1), the second stopper (8) is in an arc shape, and the circumferential surface of the second stopper (8) is flush with the chamfered outer end surface of the pusher block (4).

6. The grate structure of a garbage incinerator according to claim 1, characterized in that: The fixed grate plate (1) and the movable grate plate (2) are respectively provided with ventilation grooves (9) on the left and right sides, and the ventilation grooves (9) are also provided with a plurality of ventilation holes (91), and the ventilation holes (91) are connected with the empty grooves (3) in the fixed grate plate (1) and the movable grate plate (2).

7. The grate structure of a garbage incinerator according to claim 1, characterized in that: The fixed grate plate (1) and the movable grate plate (2) are both provided with a slot (10) at the rear end, and the slot (10) is used to install the fixed grate plate (1) and the movable grate plate (2) in the grate; a positioning block (20) is also provided in the slot (10).

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