High-efficiency auxiliary machine for boiler coal feeding

Abstract

The utility model relates to the technical field of boiler coal feeding auxiliary machines, and discloses a high-efficiency auxiliary machine for boiler coal feeding, which comprises a support frame, a coal machine box, a feeding pipeline, a feeding funnel, a conveying belt and the like, a shifting frame is fixedly connected on the outer surface of the conveying belt, a deflection shaft is fixedly connected on the inner side wall of the feeding pipeline, and the deflection shaft is fixedly connected on the inner side wall of the conveying belt. The outer surface of the deflection shaft is movably sleeved with a material guiding cone, and a pressure bearing block is fixedly connected to the position, corresponding to the material guiding cone, of the inner side wall of the feeding pipeline. By means of operation of the conveying belt, the stirring frame on the conveying belt can move synchronously with the conveying belt, when the stirring frame moves to the deflection plate, the stirring frame can stir the deflection plate to deflect around the deflection shaft, and at the moment, large-size coal briquettes clamped at the position of the material guiding cone can be extruded by the deflected material guiding cone; only large-size coal briquettes can be extruded by the material guiding cone and the pressure bearing block to be crushed into small-size coal briquettes, and the large-size coal briquettes are prevented from directly falling and impacting the conveying belt.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler coal feeding auxiliary machines, in particular to a high-efficiency auxiliary machine for boiler coal feeding. Background Technique

[0002] A boiler is an energy converter that uses the heat energy released by fuel combustion or other heat energy to heat working medium water or other fluids to a certain parameter. It is mostly used in thermal power plants, ships, locomotives, and industrial and mining enterprises. The boiler mainly operates through coal combustion. With the development of society, currently, the use of boilers is always combined with coal feeders to ensure the normal operation of the boilers. A coal feeder is a device mainly responsible for feeding coal into the boiler. Coal is input through the upper feed inlet, and the coal falls into the hopper. Then the coal falls from the hopper onto the conveyor belt and slides out along the internal inclined plane and enters the combustion chamber of the boiler.

[0003] During the use of the existing coal feeder, due to the uneven size of coal blocks and the fact that the coal blocks directly fall onto the conveyor belt from the feed hopper, the conveyor belt needs to withstand the impact of some larger coal blocks. Long-term use is likely to cause damage or even rupture of the conveyor belt, thus affecting the normal operation of the coal feeder. Moreover, the uneven size of coal blocks also affects the combustion utilization rate of coal blocks inside the boiler, easily resulting in incomplete combustion of some coal blocks and causing waste. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing coal feeder, the utility model provides a high-efficiency auxiliary machine for boiler coal feeding, which has the advantages of being able to crush larger coal blocks, preventing larger coal blocks from directly falling onto the conveyor belt and causing damage to the conveyor belt, buffering the fall of coal blocks, making the crushed coal blocks more convenient for combustion, improving the combustion utilization rate of coal blocks, and reducing waste, and solves technical problems such as damage caused by some larger coal blocks directly impacting on the conveyor belt.

[0005] The utility model provides the following technical solution: A high-efficiency auxiliary machine for boiler coal feeding, including a support frame, and further including:

[0006] A coal feeding machine case, fixedly installed at the top of the support frame. A box cover is provided on the front side wall of the coal feeding machine case. A feeding pipeline is fixedly provided on the left side of the top surface of the coal feeding machine case. The bottom of the feeding pipeline is communicated with the inside of the coal feeding machine case, and a feeding hopper is fixedly installed at the top of the feeding pipeline.

[0007] A transmission shaft, rotatably installed on the inner cavity side wall of the coal feeding machine case. A transmission roller is fixedly sleeved on the outer surface of the transmission shaft. A conveyor belt is sleeved on the outside of the transmission roller in a driving manner. An outlet is opened on the right side wall of the coal feeding machine case, and a guide plate is fixedly installed on the side wall of the coal feeding machine case at the outlet.

[0008] Preferably, the conveyor belt includes:

[0009] A shifting frame, fixedly connected to the outer surface of the conveyor belt.

[0010] Preferably, the feed pipe includes:

[0011] A deflecting shaft, fixedly connected to the inner side wall of the feed pipe;

[0012] A material guiding cone, movably sleeved on the outer surface of the deflecting shaft;

[0013] A pressure-bearing block, fixedly connected to the corresponding position of the inner side wall of the feed pipe and the material guiding cone.

[0014] Preferably, the material guiding cone includes:

[0015] A deflecting plate, fixedly connected to the middle of the bottom surface of the material guiding cone;

[0016] A magnetic block, fixedly arranged inside the deflecting plate;

[0017] A magnetic plate, fixedly connected to the inner side wall of the feed pipe and corresponding to the magnetic block, and the magnetism of the magnetic block is the same as that of the magnetic plate.

[0018] Preferably, the deflecting shaft extends into the inside of the coal feeder box and is on the rotation track of the shifting frame.

[0019] Preferably, the shifting frame includes:

[0020] Elastic bands, the number of the elastic bands is two, the two elastic bands are fixedly connected to the shifting frame, and there is a gap between the two elastic bands.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. By designing a deflecting shaft, a material guiding cone, a pressure-bearing block, a deflecting plate and a shifting frame, etc., when the coal feeder operates normally, by the operation of the conveyor belt, the shifting frame on the conveyor belt will move synchronously with the conveyor belt. When the shifting frame moves to the deflecting plate, the shifting frame will deflect the deflecting plate around the deflecting shaft. At this time, the large-volume coal blocks stuck at the material guiding cone will be squeezed by the deflected material guiding cone, and only the large-volume coal blocks will be squeezed by the material guiding cone and the pressure-bearing block to be broken into smaller-volume coal blocks, avoiding the large-volume coal blocks from directly falling and impacting on the conveyor belt.

[0023] 2. By designing deflection plates, magnetic blocks, magnetic plates and toggle racks, when the deflection plate is deflected, the toggle rack on the conveyor belt will pass over the deflection plate. At this time, the magnetic blocks on the deflection plate will be affected by the magnetic repulsion of the magnetic plate, causing the deflection plate to reversely deflect and reset. The deflection plate is then used to drive the guide cone to repeatedly deflect on the deflection axis to extrude and crush the coal blocks. After the crushed coal blocks enter the boiler combustion chamber, the utilization rate of the coal block combustion can be improved, the coal blocks can be fully burned, and waste can be reduced.

[0024] 3. By designing the toggle frame and elastic belt, as the large-volume coal blocks are broken by the deflected guide cone and the pressure block, the broken coal blocks will fall on the elastic belt. Due to the gap between the two elastic belts, the coal blocks on the elastic belt will eventually fall on the conveyor belt and finally be conveyed to the guide plate by the conveyor belt. The buffering of the elastic belt will reduce the impact force of the coal blocks on the conveyor belt as much as possible, further reducing the loss of the conveyor belt caused by the coal blocks, and improving the service life of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the coal feeding box of the utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the feed pipe of the utility model;

[0028] Figure 4 It is a schematic diagram of the structure of the transmission belt of the utility model.

[0029] In the figure: 1. support frame; 2. coal feeder box; 3. box cover; 4. feed pipe; 41. deflection shaft; 42. guide cone; 43. pressure block; 44. deflection plate; 45. magnetic block; 46. magnetic plate; 5. feed hopper; 6. transmission shaft; 7. transmission roller; 8. conveyor belt; 81. toggle frame; 82. elastic belt; 9. discharge port; 10. guide plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0031] See also Figures 1 - 4A high-efficiency auxiliary machine for coal feeding of a boiler comprises a support frame 1, a coal feeding box 2 is fixedly installed on the top of the support frame 1, a box cover 3 is provided on the front side wall of the coal feeding box 2, a feeding pipe 4 is fixedly installed on the left side of the top surface of the coal feeding box 2, the bottom of the feeding pipe 4 is connected with the interior of the coal feeding box 2, a feeding funnel 5 is fixedly installed on the top of the feeding pipe 4, a transmission shaft 6 is rotatably installed on the side wall of the inner cavity of the coal feeding box 2, a transmission roller 7 is fixedly sleeved on the outer surface of the transmission shaft 6, a conveyor belt 8 is transmission sleeved on the outer side of the transmission roller 7, a discharge port 9 is opened on the right side wall of the coal feeding box 2, and a guide plate 10 is fixedly installed on the side wall of the coal feeding box 2 at the discharge port 9.

[0032] See also Figures 1 - 4 A shifting frame 81 is fixedly connected to the outer surface of the conveyor belt 8 to ensure that the conveyor belt 8 can drive the shifting frame 81 to move synchronously when transporting coal blocks.

[0033] See also Figures 1 - 4 A deflection shaft 41 is fixedly welded on the inner wall of the feed pipe 4, and a guide cone 42 is movably sleeved on the outer surface of the deflection shaft 41 to ensure that the guide cone 42 can deflect along the deflection shaft 41. A pressure block 43 is fixedly welded at the corresponding position of the inner wall of the feed pipe 4 and the guide cone 42 to ensure that when the guide cone 42 is deflected, the guide cone 42 cooperates with the pressure block 43 to cause large-volume coal blocks to be squeezed and crushed by the guide cone 42 and the pressure block 43, thereby preventing large-volume coal blocks from falling directly onto the conveyor belt 8.

[0034] See also Figures 1 - 4 A deflection plate 44 is fixedly welded to the middle part of the bottom surface of the guide cone 42, a magnetic block 45 is fixedly arranged inside the deflection plate 44, and a magnetic plate 46 is fixedly welded on the inner wall of the feed pipe 4 at a position corresponding to the magnetic block 45. The magnetic properties of the magnetic block 45 are the same as those of the magnetic plate 46, so that after the deflection plate 44 is deflected, the magnetic repulsion of the magnetic plate 46 on the magnetic block 45 is utilized, so that the deflection plate 44 will lead the guide cone 42 to deflect in the opposite direction, thereby squeezing and crushing the large-volume coal blocks.

[0035] See also Figures 1 - 4 The deflection shaft 41 extends into the interior of the coal feeding box 2 and is on the rotation track of the shifting frame 81, ensuring that when the conveyor belt 8 is transporting the coal blocks, the shifting frame 81 moves synchronously, so that the shifting frame 81 will shift the deflection plate 44, thereby utilizing the deflection plate 44 to deflect the guide cone 42.

[0036] See also Figures 1 - 4 Two elastic belts 82 with a gap therebetween are fixedly connected to the shifting frame 81 , and the elastic belts 82 are used to buffer the fallen coal blocks to prevent the coal blocks from directly impacting the conveyor belt 8 and damaging the conveyor belt 8 .

[0037] Working principle: When the coal feeding auxiliary equipment is running normally, coal is introduced into the feeding pipeline 4 through the feeding hopper 5. Then, the conveyor belt 8 is started. The coal in the feeding pipeline 4 will be transported to the discharge port 9 through the conveyor belt 8 and then exported through the guiding plate 10. During this process, due to the operation of the conveyor belt 8, the toggling frame 81 on the conveyor belt 8 will move synchronously with the conveyor belt 8. When the toggling frame 81 moves to the deflection plate 44, the toggling frame 81 will toggle the deflection plate 44 to deflect around the deflection shaft 41. At this time, the large-volume coal blocks stuck at the guiding cone 42 will be squeezed by the deflected guiding cone 42. Only the large-volume coal blocks will be squeezed by the guiding cone 42 and the pressure-bearing block 43 to be broken into smaller-volume coal blocks, avoiding the direct impact of large-volume coal blocks on the conveyor belt 8. At the same time, when the deflection plate 44 deflects, the toggling frame 81 on the conveyor belt 8 will cross over the deflection plate 44. At this time, the magnet 45 on the deflection plate 44 will be affected by the magnetic repulsion force of the magnetic plate 46, causing the deflection plate 44 to deflect in the reverse direction and reset. Furthermore, the deflection plate 44 is used to drive the guiding cone 42 to deflect repeatedly on the deflection shaft 41 to squeeze and crush the coal blocks. After the crushed coal blocks enter the boiler combustion chamber, the utilization rate of coal block combustion can be improved, promoting the full combustion of coal blocks, reducing waste. Secondly, as the large-volume coal blocks are broken by the deflected guiding cone 42 and the pressure-bearing block 43, the crushed coal blocks will fall on the elastic belt 82. Due to the gap between the two elastic belts 82, the coal blocks on the elastic belt 82 will eventually fall on the conveyor belt 8 and finally be transported by the conveyor belt 8 to the guiding plate 10. Due to the buffering of the elastic belt 82, the impact force of the coal blocks on the conveyor belt 8 will be reduced as much as possible, further reducing the loss caused by the coal blocks to the conveyor belt 8 and increasing the service life of the conveyor belt 8.

Claims

1. A high-efficiency auxiliary machine for boiler coal feeding, including a support frame (1), characterized in that, Also includes: A coal feeding box (2) is fixedly mounted on the top of the support frame (1); a box cover (3) is arranged on the front side wall of the coal feeding box (2); a feed pipe (4) is fixedly arranged on the left side of the top surface of the coal feeding box (2); the bottom of the feed pipe (4) is connected to the inside of the coal feeding box (2); and a feed hopper (5) is fixedly mounted on the top of the feed pipe (4); A transmission shaft (6) is rotatably mounted on the side wall of the inner cavity of the coal feeder box (2); a transmission roller (7) is fixedly sleeved on the outer surface of the transmission shaft (6); a conveyor belt (8) is transmission sleeved on the outer side of the transmission roller (7); a discharge port (9) is opened on the right side wall of the coal feeder box (2); and a guide plate (10) is fixedly mounted on the side wall of the coal feeder box (2) at the discharge port (9).

2. The high-efficiency auxiliary machine for boiler coal feeding according to claim 1, wherein: The conveyor belt (8) comprises: The shifting frame (81) is fixedly connected to the outer surface of the conveyor belt (8).

3. The high-efficiency auxiliary machine for boiler coal feeding according to claim 2, characterized in that: The feed pipe (4) comprises: A deflection shaft (41) fixedly connected to the inner wall of the feed pipe (4); A material guide cone (42) movably sleeved on the outer surface of the deflection shaft (41); The pressure bearing block (43) is fixedly connected to the inner side wall of the feed pipe (4) at a position corresponding to the material guide cone (42).

4. The high-efficiency auxiliary machine for boiler coal feeding according to claim 3, characterized in that: The material guide cone (42) comprises: A deflection plate (44) fixedly connected to the middle portion of the bottom surface of the material guide cone (42); A magnetic block (45) fixedly arranged inside the deflection plate (44); A magnetic plate (46) is fixedly connected to the inner wall of the feed pipe (4) and corresponds to the magnetic block (45). The magnetic properties of the magnetic block (45) are the same as those of the magnetic plate (46).

5. The high-efficiency auxiliary machine for boiler coal feeding according to claim 4, characterized in that: The deflection shaft (41) extends into the interior of the coal feeder box (2) and is located on the rotation track of the shifting frame (81).

6. The high-efficiency auxiliary machine for boiler coal feeding according to claim 5, characterized in that: The toggle frame (81) comprises: Elastic bands (82), the number of the elastic bands (82) is two, the two elastic bands (82) are fixedly connected to the toggle frame (81), and there is a gap between the two elastic bands (82).

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