Anti-slagging device for pulverized coal fired boiler

Abstract

The utility model relates to the field of pulverized coal boilers, in particular to an anti-slagging device of a pulverized coal boiler. The anti-slagging device for the pulverized coal fired boiler comprises a supporting frame, a moving rod and a connecting base, the supporting frame is installed at the bottom end of the pulverized coal fired boiler body, the bottom end of the pulverized coal fired boiler body is fixedly connected with a receding motor, the output end of the receding motor is fixedly connected with the top end of the supporting frame, and the moving rod is installed on one side of the supporting frame. According to the utility model, the high-speed nozzle is used for blowing high-energy gas to carry out primary airflow scouring, and a physical scrubbing mode is also combined; the brush plate is tightly attached to the inner wall of the boiler for brushing, so that stubborn slag and dust attached to the inner wall of the boiler can be more effectively removed, and particularly the parts which are difficult to remove only by gas scouring, such as soot which can be removed by a shovel in a firewood stove; by means of the physical and airflow dual cleaning mechanism, the cleaning effect is remarkably improved, and it is ensured that the inner wall of the boiler is thoroughly cleaned.

Description

Technical Field

[0001] The utility model relates to the field of pulverized coal boilers, in particular to an anti-slagging device for pulverized coal boilers. Background Art

[0002] According to the existing patent application number: 202211059631.1, the utility model discloses a slagging prevention system for a pulverized coal boiler. By setting a transmission mechanism, a dust cleaning mechanism and a dust suction mechanism, the nozzle is moved back and forth along the inside of the pulverized coal boiler, and high-energy gas is sprayed to suspend the dust attached to the inner wall of the pulverized coal boiler. The fan blades rotate to absorb the air containing dust in the pulverized coal boiler into the dust suction pipe, and the dust is filtered by the dust filter bag and then discharged to the external environment. It is convenient and fast, greatly improves the ash removal efficiency of the pulverized coal boiler, and greatly reduces the labor intensity.

[0003] According to the existing patents, there are the following defects:

[0004] Simply using high-energy gas to clean the dust inside the boiler cannot achieve a complete cleaning effect. For example, when a wood stove is burning wood, the soot inside the stove needs to be removed with a shovel. Even if the boiler is cleaned regularly, the dust inside cannot be completely cleaned.

[0005] Therefore, it is necessary to provide a new anti-slagging device for pulverized coal boiler to solve the above technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a slagging prevention device for a pulverized coal boiler.

[0007] The anti-slagging device for a pulverized coal boiler provided by the utility model comprises: a support frame, a moving rod and a connecting seat, the support frame is installed at the bottom end of the pulverized coal boiler body, the bottom end of the pulverized coal boiler body is fixedly connected to a give-way motor, the output end of the give-way motor is fixedly connected to the top of the support frame, a moving rod is installed on one side of the support frame, brush plates are symmetrically provided on the outer wall of the moving rod, high-speed nozzles are equidistantly provided on the outer wall of the moving rod away from the brush plate, one end of the moving rod is rotatably connected to the connecting seat, the interior of the connecting seat is hollow, and an air pump is connected to the outer wall of the connecting seat.

[0008] Preferably, the middle part of the moving rod is rotatably connected to a threaded rod, one end of the threaded rod is threadedly connected to a threaded slider, the end of the moving rod is symmetrically rotatably connected to the outer wall of the threaded slider with a support rod, the two groups of support rods are hinged to one side of the corresponding brush plate, the bottom end of the moving rod is fixedly connected to a telescopic motor, the output end of the telescopic motor is fixedly connected to one end of the threaded rod, and airways are symmetrically opened inside the moving rod, and the airways connect the hollow part of the connecting seat and several symmetrical high-speed nozzles.

[0009] Preferably, a reciprocating screw rod is rotatably connected to the inside of the support frame, a transmission rod is rotatably connected to the inside of the support frame, a connecting seat is installed in cooperation with the reciprocating screw rod, the transmission rod passes through the connecting seat, one end of the movable rod is rotatably connected to a cross rod, one end of the cross rod is sleeved on one end of the transmission rod, one end of the cross rod is rotatably connected to a driven pulley, the other end of the cross rod is rotatably connected to a driving pulley, the driving pulley is slidably connected to the transmission rod, and the driving pulley and the driven pulley are connected through a belt drive.

[0010] Preferably, the bottom end of the support frame is fixedly connected to a lifting motor, the output end of the lifting motor is fixedly connected to the bottom end of the reciprocating screw rod, the bottom end of the reciprocating screw rod is fixedly connected to a driving gear, the bottom end of the transmission rod is fixedly connected to a driven gear, and the driving gear and the driven gear are meshed and connected.

[0011] Preferably, an ash tray is fixedly connected to the top of the connecting seat.

[0012] Preferably, the driving pulley and the driven pulley have the same diameter, and the gear ratio between the driving gear and the driven gear is 2:1.

[0013] Preferably, the single rotation of the yield motor is 180 degrees.

[0014] Compared with the related art, the anti-slagging device for pulverized coal boiler provided by the present invention has the following beneficial effects:

[0015] Enhanced cleaning effect:

[0016] The utility model not only uses a high-speed nozzle to spray high-energy gas for preliminary airflow flushing, but also combines a physical scrubbing method; by using a brush plate to scrub against the inner wall of the boiler, it can more effectively remove stubborn slag and dust attached to the inner wall of the boiler, especially those parts that are difficult to remove by gas flushing alone, such as the soot in a wood stove that requires a shovel to remove; this dual cleaning mechanism of physical and airflow significantly improves the cleaning effect and ensures that the inner wall of the boiler is thoroughly cleaned;

[0017] Increased automation:

[0018] The utility model realizes the automatic reciprocating movement of the brush plate and the nozzle through a complex transmission mechanism and motor drive, and the entire cleaning process can be completed without human intervention; this not only greatly improves the cleaning efficiency, but also greatly reduces the labor intensity and reduces the safety risks and errors that may be caused by manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the anti-slagging device for pulverized coal boiler provided by the utility model;

[0020] Figure 2 for Figure 1 The structural diagram of the back side is shown;

[0021] Figure 3 for Figure 1 The structural diagram of the threaded slider shown;

[0022] Figure 4 for Figure 1 The schematic diagram of the structure of the driving gear is shown.

[0023] Numbers in the figure: 1. Support frame; 2. Yield motor; 3. Moving rod; 4. Brush plate; 5. High-speed nozzle; 6. Connecting seat; 7. Air pump; 8. Threaded rod; 9. Threaded slider; 10. Support rod; 11. Telescopic motor; 12. Reciprocating screw; 13. Transmission rod; 14. Cross bar; 15. Driven pulley; 16. Driving pulley; 17. Lifting motor; 18. Driving gear; 19. Driven gear; 20. Ash collecting tray. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0026] See also Figures 1 to 4 , a pulverized coal boiler anti-slagging device, the pulverized coal boiler anti-slagging device includes: a support frame 1, a moving rod 3 and a connecting seat 6. The support frame 1 is installed at the bottom end of the pulverized coal boiler body, and the bottom end of the pulverized coal boiler body is fixedly connected to a give way motor 2, and the output end of the give way motor 2 is fixedly connected to the top of the support frame 1. A moving rod 3 is installed on one side of the support frame 1, and a brush plate 4 is symmetrically provided on the outer wall of the moving rod 3. A high-speed nozzle 5 is equidistantly provided on the outer wall of the moving rod 3 away from the brush plate 4. One end of the moving rod 3 is rotatably connected to the connecting seat 6. The interior of the connecting seat 6 is hollow, and the outer wall of the connecting seat 6 is connected to an air pump 7. The top of the connecting seat 6 is fixedly connected to a ash receiving pan 20, and the give way motor 2 rotates 180 degrees in a single rotation.

[0027] See also Figure 3 The middle part of the moving rod 3 is rotatably connected to a threaded rod 8, one end of the threaded rod 8 is threadedly connected to a threaded slider 9, the end of the moving rod 3 and the outer wall of the threaded slider 9 are symmetrically rotatably connected to a support rod 10, the two groups of support rods 10 are hinged to one side of the corresponding brush plate 4, the bottom end of the moving rod 3 is fixedly connected to a telescopic motor 11, the output end of the telescopic motor 11 is fixedly connected to one end of the threaded rod 8, and airways are symmetrically opened inside the moving rod 3, the airways are connected to the hollow part of the connecting seat 6 and several symmetrical high-speed nozzles 5.

[0028] See also Figure 3-4 , the support frame 1 is internally connected to a reciprocating screw rod 12, the support frame 1 is internally connected to a transmission rod 13, the connecting seat 6 is installed in conjunction with the reciprocating screw rod 12, the transmission rod 13 passes through the connecting seat 6, one end of the mobile rod 3 is rotatably connected to a cross bar 14, one end of the cross bar 14 is sleeved on one end of the transmission rod 13, one end of the cross bar 14 is rotatably connected to a driven pulley 15, the other end of the cross bar 14 is rotatably connected to a driving pulley 16, the driving pulley 16 is slidably connected to the transmission rod 13, and the driving belt The wheel 16 is connected to the driven pulley 15 through a belt drive. The bottom end of the support frame 1 is fixedly connected to the lifting motor 17. The output end of the lifting motor 17 is fixedly connected to the bottom end of the reciprocating screw rod 12. The bottom end of the reciprocating screw rod 12 is fixedly connected to the driving gear 18. The bottom end of the transmission rod 13 is fixedly connected to the driven gear 19. The driving gear 18 is meshed with the driven gear 19. The driving pulley 16 and the driven pulley 15 have the same diameter, and the gear ratio of the driving gear 18 to the driven gear 19 is 2:1.

[0029] The working principle of the anti-slagging device for pulverized coal boiler provided by the utility model is as follows:

[0030] Initial state:

[0031] The support frame 1 is firmly installed at the bottom end of the pulverized coal boiler body, and the positioning motor 2 is connected to the support frame 1 for adjusting the position of the entire device.

[0032] The moving rod 3 is connected to the air pump 7 through the connecting seat 6, and the brush plate 4 and the high-speed nozzle 5 are used for physical brushing and jet airflow cleaning respectively.

[0033] Brushing and spraying process:

[0034] Scrubbing action: The telescopic motor 11 drives the threaded rod 8 to rotate, driving the threaded slider 9 to move on the moving rod 3. The threaded slider 9 is connected to the brush plate 4 through the support rod 10, thereby pushing the brush plate 4 to scrub the inner wall of the boiler, effectively removing the initial slagging.

[0035] Jet cleaning: The air pump 7 supplies air to the air passage inside the moving rod 3 through the connecting seat 6. The gas is then ejected through the high-speed nozzle 5, forming a strong airflow to flush the inner wall of the boiler and further remove stubborn slag.

[0036] Movement and reciprocating motion:

[0037] The lifting motor 17 drives the reciprocating screw 12 to rotate, and through the engagement of the driving gear 18 and the driven gear 19, drives the transmission rod 13 to rotate synchronously.

[0038] The rotation of the transmission rod 13 is driven by the belt of the driving pulley 16 and the driven pulley 15 on the cross bar 14, so that the cross bar 14 drives the connecting seat 6 and the moving rod 3 to move back and forth on the support frame 1. This reciprocating motion ensures that the brush plate 4 and the high-speed nozzle 5 can cover more areas of the boiler inner wall.

[0039] Position Adjustment:

[0040] The motor 2 can rotate 180 degrees as needed to adjust the position of the support frame 1 and the entire device to meet the cleaning needs of different areas or angles.

[0041] Collecting ash:

[0042] The ash tray 20 at the top of the connecting seat 6 is used to collect ash residue dropped during the cleaning process, which is convenient for subsequent processing and cleaning.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pulverized coal boiler anti-slagging device, characterized in that: include: A support frame (1), the support frame (1) is installed at the bottom end of the pulverized coal boiler body, the bottom end of the pulverized coal boiler body is fixedly connected to a step-down motor (2), and the output end of the step-down motor (2) is fixedly connected to the top end of the support frame (1); A movable rod (3) is installed on one side of the support frame (1), a brush plate (4) is symmetrically provided on the outer wall of the movable rod (3), and a high-speed nozzle (5) is equidistantly provided on the outer wall of the movable rod (3) away from the brush plate (4); A connecting seat (6) is provided. One end of the moving rod (3) is rotatably connected to the connecting seat (6). The interior of the connecting seat (6) is hollow, and the outer wall of the connecting seat (6) is connected to an air pump (7).

2. The anti-slagging device for a pulverized coal boiler according to claim 1, characterized in that: The middle part of the moving rod (3) is rotatably connected to a threaded rod (8), one end of the threaded rod (8) is threadedly connected to a threaded slider (9), the end of the moving rod (3) and the outer wall of the threaded slider (9) are symmetrically rotatably connected to a support rod (10), two groups of the support rods (10) are hinged to one side of the corresponding brush plate (4), the bottom end of the moving rod (3) is fixedly connected to a telescopic motor (11), the output end of the telescopic motor (11) is fixedly connected to one end of the threaded rod (8), and air passages are symmetrically opened inside the moving rod (3), and the air passages are connected to the hollow part of the connecting seat (6) and a plurality of symmetrical high-speed nozzles (5).

3. The anti-slagging device for a pulverized coal boiler according to claim 1, characterized in that: The support frame (1) is internally rotatably connected to a reciprocating screw rod (12), the support frame (1) is internally rotatably connected to a transmission rod (13), the connecting seat (6) is mounted in conjunction with the reciprocating screw rod (12), the transmission rod (13) passes through the connecting seat (6), one end of the moving rod (3) is rotatably connected to a cross bar (14), one end of the cross bar (14) is sleeved on one end of the transmission rod (13), one end of the cross bar (14) is rotatably connected to a driven pulley (15), the other end of the cross bar (14) is rotatably connected to a driving pulley (16), the driving pulley (16) is slidably connected to the transmission rod (13), and the driving pulley (16) and the driven pulley (15) are connected through a belt transmission.

4. The anti-slagging device for a pulverized coal boiler according to claim 3, characterized in that: The bottom end of the support frame (1) is fixedly connected to a lifting motor (17), the output end of the lifting motor (17) is fixedly connected to the bottom end of the reciprocating screw rod (12), the bottom end of the reciprocating screw rod (12) is fixedly connected to a driving gear (18), the bottom end of the transmission rod (13) is fixedly connected to a driven gear (19), and the driving gear (18) and the driven gear (19) are meshed and connected.

5. The anti-slagging device for a pulverized coal boiler according to claim 1, characterized in that: An ash receiving tray (20) is fixedly connected to the top of the connecting seat (6).

6. The anti-slagging device for a pulverized coal boiler according to claim 4, characterized in that: The driving pulley (16) and the driven pulley (15) have the same diameter, and the gear ratio of the driving gear (18) and the driven gear (19) is 2:

1.

7. The anti-slagging device for a pulverized coal boiler according to claim 1, characterized in that: The single rotation of the motor (2) is 180 degrees.

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