Layered combustor

Abstract

The utility model discloses a layered burner, which relates to the technical field of pulverized coal burners and comprises a fire grate, side plates are arranged at two ends of the fire grate, a motor is fixed at the bottom end of the outer end of one of the side plates, a main shaft is fixed at the output end of the motor, and after falling on the fire grate, coal granules roll down along the steps of the fire grate, so that the coal granules are uniformly distributed on the main shaft. When the coal feeding work of the fire grate on the layer is finished, a motor works to drive a main shaft and a main gear to rotate, the main gear and an auxiliary gear are matched to drive a toothed chain to rotate, the toothed chain drives a shifting rod to move through a connecting rod, a sliding barrel and an L-shaped rod which are connected through a connector, and the shifting rod can obliquely move downwards from the high position of the fire grate at the moment; according to the coal granule spreading device, the motor rotates forwards and backwards, coal granules accumulated on the fire grate are pushed downwards, the stirring and material spreading effect is achieved, through forward rotation and reverse rotation of the motor, the coal granules can be relatively evenly spread under the condition of reciprocating motion of the stirring rod, and more sufficient combustion work in the later period is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverized coal burners, and particularly relates to a stratified burner. Background Art

[0002] The stratified burner for power generation is mainly an efficient and energy-saving combustion device. It realizes the stratified combustion of fuel through specific technical means to improve the combustion efficiency and reduce pollutant emissions. The following is a detailed analysis of the stratified burner for power generation:

[0003] I. Definition and Principle

[0004] The application of the stratified burner in the power generation field mainly refers to stratifying according to the fuel particle size or the concentration of the mixed gas in combustion devices such as boilers or engines to achieve more sufficient and efficient combustion. Its basic principle is to divide the fuel or the mixed gas into layers with different concentrations or particle sizes through physical or mechanical methods, making the combustion process more uniform and controllable, thereby improving the combustion efficiency and reducing pollutant generation;

[0005] II. Working Characteristics

[0006] Efficient combustion: The stratified burner can ensure that the fuel is more fully burned in the combustion chamber, improve the combustion efficiency, and reduce fuel consumption;

[0007] Energy conservation and emission reduction: By optimizing the combustion process, pollutants generated by incomplete combustion, such as nitrogen oxides (NOx), carbon monoxide (CO), and particulate matter, are reduced, which is beneficial to environmental protection;

[0008] Strong adaptability: The stratified burner can adapt to different types and qualities of fuels, improving the fuel adaptability of power generation equipment;

[0009] Simple operation: Modern stratified burners usually adopt an automated control system, with simple operation and easy maintenance.

[0010] The inventor found that the following problems in the prior art have not been well solved during the implementation of this solution: In order to make the coal burn more fully inside the burner, the grate inside the burner is generally set in a stepped manner. When the coal particles are fed, they can roll and disperse along the stepped grate. The process is as follows:

[0011] First coal feeding: The coal material rolls naturally along the steps on the stepped grate. When burning for a period of time, coal is replenished;

[0012] Second coal feeding: The second replenished coal material still rolls naturally on the grate until it burns to the point where a third coal replenishment is required.

[0013] Each time the coal particles are fed, it is impossible for them to evenly fall on the grate at the step. The coal particles stay on the grate of a certain step when rolling, blocking the subsequent falling grates, resulting in accumulation at this position. Since coal needs to be replenished after burning for a period of time, compared with the coal materials at other positions, there will still be a certain amount of coal particles that have not been fully burned at the position where the coal particles are accumulated or slightly accumulated. As a result, the coal particles at this position will block the coal materials entering during the next feeding again. The grate below the blocking position cannot receive coal materials or can only receive a small amount of coal materials due to the blockage, causing one end of this layer of grate to burn normally, one end to have coal materials accumulated and burn insufficiently, and one end to have no coal to burn after burning for a period of time due to less coal materials, affecting the overall combustion efficiency. Summary of the Invention

[0014] The main purpose of the present invention is to provide a stratified burner, which can effectively solve the problems in the background technology.

[0015] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0016] A stratified burner includes a grate. Side plates are provided at both ends of the grate. A motor is fixed to the bottom end of the outer end of one of the side plates. The output end of the motor is fixed with a main shaft. The top ends of both sides of the outer end of the side plate are rotatably connected with auxiliary shafts. Auxiliary gears are fixed to the outer walls of the auxiliary shafts at the positions of the main gears. A toothed chain is meshed and connected between the main gear and the auxiliary gears. Connectors are provided at the positions between the two toothed chains and between the auxiliary gears. A dial rod is provided above the grate. L-shaped rods are fixed to both ends of the dial rod. Slide cylinders are fixed to the ends of the L-shaped rods away from each other. Connecting rods are fixed to the ends of the slide cylinders away from the L-shaped rods. Connecting gears are fixed to the outer walls of the auxiliary shafts away from the auxiliary gears.

[0017] Preferably, the end of the main shaft away from the motor is rotatably connected to the side wall of the side plate close to it.

[0018] Preferably, the bottom parts of the connecting rods are respectively connected to the connectors.

[0019] Preferably, support rods are fixed to the tops of the side plates. The slide cylinders are respectively sleeved and slid on the outer walls of the support rods.

[0020] Preferably, a sleeve is sleeved outside the dial rod. A number of feeding plates are fixed to the outer wall of the sleeve.

[0021] Preferably, the outer diameter of the dial rod is smaller than the inner diameter of the sleeve.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When the coal particles fall on the grate, they will roll down along the steps. When the coal feeding work of the grate on this layer is completed, the motor can drive the main shaft and the main gear to rotate. The combination of the main gear and the sub-gear can drive the tooth chain to rotate. The tooth chain drives the lever to move through the connecting rod, slide cylinder and L-shaped rod connected by the connector. At this time, the lever will move downward from the higher position of the grate and push the coal particles accumulated on the grate downward to achieve the effect of spreading the materials. Through the forward and reverse rotation of the motor, the coal particles can be spread relatively evenly under the reciprocating movement of the lever, which is convenient for more sufficient combustion in the later stage.

[0024] 2. When the secondary gear rotates, it is supported by the rotation of the secondary shaft and the side plate. When the secondary shaft rotates, it can drive the connecting gear to rotate together. The connecting gear can drive the upper or lower connecting gear to rotate through another tooth chain, so that the secondary gear at another height position can rotate. The secondary gear can drive the shifting rod at this height to perform material shifting through the tooth chain at this position. In summary, the present application can drive shifting rods at different heights to perform material shifting through one motor, thereby achieving better energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a layered burner of the utility model;

[0026] Figure 2 It is a partial structural schematic diagram of a layered burner of the utility model;

[0027] Figure 3 This is an enlarged structural diagram of point A of a layered burner of the utility model;

[0028] Figure 4 This is an enlarged structural schematic diagram of point B of a stratified burner of the utility model.

[0029] In the figure: 1. grate; 2. side plate; 3. motor; 4. main shaft; 5. secondary shaft; 6. main gear; 7. secondary gear; 8. connecting gear; 9. tooth chain; 10. connector; 11. connecting rod; 12. L-shaped rod; 13. shift rod; 14. sleeve; 15. shift plate; 16. sleeve; 17. support rod. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figures 1-4As shown in the figure, a stratified burner includes a grate 1. Side plates 2 are provided at both ends of the grate 1. At the bottom of the outer end of one of the side plates 2, a motor 3 is fixed. The output end of the motor 3 is fixed with a main shaft 4. At both ends of the top of the outer end of the side plate 2, auxiliary shafts 5 are rotatably connected. At the outer wall of the auxiliary shafts 5 at the position of the main gear 6, auxiliary gears 7 are fixed. A chain 9 is meshed and connected between the main gear 6 and the auxiliary gears 7. At the position between the two chains 9 and the auxiliary gears 7, connectors 10 are provided. Above the grate 1, there is a dial rod 13. At both ends of the dial rod 13, L-shaped rods 12 are fixed. At the ends of the L-shaped rods 12 away from each other, sliding cylinders 16 are fixed. At the ends of the sliding cylinders 16 away from the L-shaped rods 12, connecting rods 11 are fixed. At the outer wall of the auxiliary shafts 5 away from the auxiliary gears 7, connecting gears 8 are fixed.

[0032] Specifically, the end of the main shaft 4 away from the motor 3 is rotatably connected to the side wall of the side plate 2 close to it, making the rotation of the main shaft 4 more stable.

[0033] Specifically, the bottom parts of the connecting rods 11 are respectively connected to the connectors 10. When the chain 9 rotates, the connecting rods 11 can be driven to move through the connectors 10. The connectors 10 are special connecting components on the chain 9 and are very mature components in the prior art. The specific structure and shape will not be elaborated here.

[0034] Specifically, support rods 17 are fixed to the tops of the side plates 2. The sliding cylinders 16 are respectively sleeved and slid on the outer walls of the support rods 17, making the movement of the sliding cylinders 16 according to the inclination level.

[0035] Specifically, a sleeve 14 is sleeved outside the dial rod 13. A number of material pushing plates 15 are fixed to the outer wall of the sleeve 14. The outer diameter of the dial rod 13 is smaller than the inner diameter of the sleeve 14. When the dial rod 13 pushes the material, the sleeve 14 and the material pushing plates 15 will contact the material. Due to the size difference, the material pushing plates 15 will rotate to a certain extent due to the resistance, forming a better material pushing effect, and the size difference of the sleeve 14 is slightly larger than that of the dial rod 13.

[0036] Working principle: after the coal particles fall on the grate 1, they will roll down along its steps. When the coal feeding work of the grate 1 on this layer is completed, the motor 3 can drive the main shaft 4 and the main gear 6 to rotate. The combination of the main gear 6 and the auxiliary gear 7 can drive the tooth chain 9 to rotate. The tooth chain 9 drives the lever 13 to move through the connecting rod 11, the slide 16, and the L-shaped rod 12 connected by the connector 10. At this time, the lever 13 will move downward from the higher position of the grate 1 and push the coal particles accumulated on the grate 1 downward to achieve the effect of spreading the materials. Through the forward and reverse rotation of the motor 3, the coal particles can be spread relatively evenly under the reciprocating movement of the lever 13, which is convenient for the later stage. For a more complete combustion work, after the material spreading work is completed, the lever 13 moves up to the top of the grate 1 for the next material spreading. When the material is spread and then burned, the secondary gear 7 is supported by the rotation of the secondary shaft 5 and the side plate 2 when rotating. The secondary shaft 5 can drive the connecting gear 8 to rotate together when rotating. The connecting gear 8 can drive the upper or lower connecting gear 8 to rotate through another toothed chain 9, so that the secondary gear 7 at another height position is rotated. The secondary gear 7 can drive the lever 13 at this height to perform material shifting work through the toothed chain 9 at this position. In summary, the present application can drive the levers 13 at different heights to perform material shifting work through one motor 3, thereby achieving better energy-saving effects.

[0037] In order to facilitate drawing drawings, the present application draws simplified examples of the main gear (6), the auxiliary gear (7), the connecting gear (8), and the toothed chain (9). These components are already publicly available components, and no additional drawings are required.

[0038] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A stratified burner, comprising a grate (1), characterized in that: The grate (1) is provided with side plates (2) at both ends, a motor (3) is fixed to the bottom end of the outer end of one of the side plates (2), a main shaft (4) is fixed to the output end of the motor (3), and both ends of the top of the outer end of the side plate (2) are rotatably connected to secondary shafts (5), and secondary gears (7) are fixed to the outer wall of the secondary shaft (5) at the position of the main gear (6), and a tooth chain (9) is meshed between the main gear (6) and the secondary gear (7), and the two tooth chains (9) are connected to each other. 9) Connectors (10) are provided at positions between the auxiliary gears (7), a lever (13) is provided above the grate (1), L-shaped rods (12) are fixed to both ends of the lever (13), a slide cylinder (16) is fixed to the ends of the L-shaped rods (12) away from each other, a connecting rod (11) is fixed to the ends of the slide cylinders (16) away from the L-shaped rods (12), and a connecting gear (8) is fixed to the ends of the outer wall of the auxiliary shaft (5) away from the auxiliary gear (7).

2. A stratified burner according to claim 1, characterized in that: One end of the main shaft (4) away from the motor (3) is rotatably connected to the side wall close to the side plate (2).

3. A stratified burner according to claim 1, characterized in that: The bottoms of the connecting rods (11) are respectively connected to the connectors (10).

4. A stratified burner according to claim 1, characterized in that: A support rod (17) is fixed to the top of each of the side plates (2), and the slide cylinders (16) are respectively sleeved and slidably mounted on the outer walls of the support rods (17).

5. A stratified burner according to claim 1, characterized in that: The outer portion of the shifting rod (13) is sleeved with a sleeve (14), and the outer wall of the sleeve (14) is fixed with a plurality of shifting plates (15).

6. A stratified burner according to claim 5, characterized in that: The outer diameter of the lever (13) is smaller than the inner diameter of the sleeve (14).

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