Kiln head waste heat boiler ash removal device

Abstract

A kiln head waste heat boiler ash removal device is installed in a flue of a preheating boiler and comprises a sliding supporting frame, the sliding supporting frame can stretch out and draw back in the length direction of the sliding supporting frame, the sliding supporting frame is connected to the upper portion of a lower pipe bundle in the flue in a sliding mode, the sliding connection direction is perpendicular to the length direction of the pipe bundle, and a sliding base is connected to the sliding supporting frame in a sliding mode in the length direction of the sliding supporting frame. A universal joint is arranged on the sliding seat and comprises a cross shaft, a driving fork and a driven fork, the driving fork and the driven fork are hinged to the cross shaft, the driven fork is connected with the sliding seat, a spraying pipe is detachably connected to the driving fork, and the spraying pipe is communicated with external dry ice spraying equipment through a pipeline. The sliding support frame moves above the lower tube bundle in the flue, so that the spray pipe is convenient to move, the tube bundle is convenient to clean in all directions, the pipeline and the spray pipe are supported by the sliding support frame, and dust cleaning workers can clean attachments such as coal ash on the outer wall of the tube bundle only by adjusting the inclination angle of the spray pipe. And the labor intensity of dust cleaning workers can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste heat boiler ash removal technology, specifically a kiln head waste heat boiler ash removal device. Background Technology

[0002] Kiln head waste heat boilers are key equipment in industries such as cement and metallurgy, used to recover waste heat from high-temperature flue gas at the kiln head. They generate steam or hot water through heat exchange, improving energy efficiency. In these boilers, the tube bundles are the core heat transfer components, transferring the waste heat from the high-temperature flue gas to water or steam. The flue gas contains a large amount of cement raw material powder and fly ash. This fly ash adheres to the surface of the tube bundles in the flue, significantly reducing energy efficiency and posing safety hazards. Therefore, regular ash removal from the kiln head waste heat boiler is necessary.

[0003] Existing ash removal technologies include mechanical vibration, sonic ash removal, or dry ice ash removal. When using dry ice ash removal, the operator usually holds a spray gun and sprays dry ice particles onto the ash surface using compressed air. During operation, the operator needs to hold the spray gun and drag the pipe connected to the spray gun, moving it frequently up, down, left, and right along the parallel tube bundles. Since there are a large number of tube bundles in the waste heat boiler at the kiln head, and the spray gun and the pipe connected to it have a certain weight, this ash removal method is labor-intensive and inconvenient. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a kiln head waste heat boiler ash removal device.

[0005] The technical solution of this utility model is as follows:

[0006] A waste heat boiler ash removal device for kiln heads is installed in the flue of a preheating boiler. It includes a sliding support frame that is telescopic along its length. The sliding support frame slides above the lower tube bundle in the flue, with the sliding direction perpendicular to the length of the tube bundle. A slide seat slides along the length of the sliding support frame, and a universal joint is provided on the slide seat. The universal joint includes a cross shaft and an active fork and a driven fork that are respectively hinged to it. The driven fork is connected to the slide seat, and a spray pipe is detachably connected to the active fork. The spray pipe is connected to an external dry ice spraying device through a pipe.

[0007] The specific structure of the aforementioned sliding support frame is as follows: the sliding support frame includes a first rectangular sleeve and a second rectangular sleeve fitted inside it. The first rectangular sleeve and the second rectangular sleeve are provided with first roller sets at opposite ends. The first rectangular sleeve and the second rectangular sleeve are connected by an adjusting member.

[0008] Regarding the specific structure of the sliding support frame that is telescopic along its length, a circular sleeve with internal threads is connected to one side of the first rectangular sleeve. The circular sleeve is located on the side of the first rectangular sleeve through which the second rectangular sleeve passes. The adjusting component is threadedly connected to the circular sleeve, and one end of it passes through the top of the first rectangular sleeve to the outer wall of the second rectangular sleeve.

[0009] The slide block has the following structure: the slide block includes a channel steel with an opening facing downwards, the channel steel is fastened to the first rectangular sleeve, and multiple sets of second rollers are provided inside the channel steel. The second rollers slide in contact with the sliding support frame, and the sliding direction is the length direction of the sliding support frame.

[0010] Preferably, the lower end face of the channel steel is lower than the upper end face of the second rectangular sleeve.

[0011] Furthermore, a first elongated hole is formed on the upper end face of the first rectangular sleeve along its length direction, and a second elongated hole corresponding to the first elongated hole is formed on the upper end face of the second rectangular sleeve along its length direction. Guide rods that slide in contact with the first elongated hole and the second elongated hole are provided inside the channel steel.

[0012] To prevent excessive force from causing the guide rod and slide to detach from the sliding support frame when cleaning the tube bundle with the nozzle, the lower end of the guide rod is located inside the second rectangular sleeve, and a stop block is provided at the lower end, with the diameter of the stop block being larger than the width of the long hole.

[0013] Furthermore, one end of the active fork is provided with a slot, and the nozzle engages with the slot.

[0014] Preferably, the upper part of the end of the first rectangular sleeve through which the second rectangular sleeve passes has a chamfer.

[0015] The beneficial effects of this utility model are as follows:

[0016] By placing the sliding support frame inside the flue of the kiln head preheating boiler, and by adjusting the lengths of the first rectangular sleeve and the second rectangular sleeve, the two ends of the first pulley group of the first rectangular sleeve and the second rectangular sleeve are slidably connected to the opposite sides of the flue, and can move above the lower tube bundle inside the flue, so that the nozzle that can spray dry ice can move along the vertical length of the tube bundle, which facilitates all-round cleaning of the tube bundle. The pipes and nozzles are supported by the sliding support frame, and the cleaning staff only need to adjust the tilt angle of the nozzle to clean the coal ash and other attachments on the outer wall of the tube bundle, which can greatly reduce the labor intensity of the cleaning staff.

[0017] A sliding support frame is slidably connected to a sliding base, and a universal joint is provided on the sliding base. With the cooperation of the sliding base and the universal joint, the nozzle at one end of the nozzle can move up, down, left, and right in the tube bundle, resulting in a better cleaning effect. Attached Figure Description

[0018] In the attached diagram:

[0019] Figure 1 This is a structural diagram;

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a top view;

[0022] Figure 4 for Figure 3 A schematic diagram of the AA-direction cross-section structure;

[0023] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0024] Figure 6 This is a schematic diagram of the sliding support frame and slide block structure;

[0025] The components represented by the various reference numerals in the diagram are:

[0026] 1. Flue; 2. Tube bundle; 3. Sliding support frame; 301. First rectangular sleeve; 3011. First elongated hole; 3012. Chamfer; 302. Second rectangular sleeve; 3021. Second elongated hole; 303. First roller; 4. Slide; 401. Channel steel; 402. Second roller; 403. Guide rod; 404. Stop block; 5. Universal joint; 501. Cross shaft; 502. Driving fork; 503. Driven fork; 6. Slot; 7. Nozzle; 8. Pipe; 9. Adjusting component. Detailed Implementation

[0027] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, a waste heat boiler cleaning device for kiln head is installed in the flue 1 of the preheating boiler. It includes a sliding support frame 3, which is telescopic along its length. The sliding support frame 3 is slidably connected above the lower tube bundle 2 in the flue 1, and the sliding direction is perpendicular to the length direction of the tube bundle 2. A sliding seat 4 is slidably connected to the sliding support frame 3 along its length.

[0028] The slide 4 is equipped with a universal joint 5, which is existing technology. The universal joint 5 includes a cross shaft 501 and an active fork 502 and a driven fork 503 that are respectively hinged to it. The driven fork 503 is connected to the slide 4. One end of the active fork 502 is provided with a groove 6, and a nozzle 7 is engaged in the groove 6. The nozzle 7 is connected to an external dry ice spraying device through a pipe 8. The dry ice spraying device is existing technology and can deliver dry ice particles with a certain pressure to the nozzle 7, spraying the dry ice particles at high speed onto the surface of the tube bundle 2 to achieve the function of dust removal.

[0029] See Figure 2 and Figure 6 As shown, the specific structure of the sliding support frame 3 is as follows: the sliding support frame 3 includes a first rectangular sleeve 301 and a second rectangular sleeve 302 sleeved inside it. The two opposite ends of the first rectangular sleeve 301 and the second rectangular sleeve 302 are provided with a first roller group. The first roller group includes at least two first rollers 303, so that the sliding support frame 3 can be supported by at least four first rollers 303 at the lower part of the flue 1, which facilitates the stable movement of the nozzle 7 that can spray dry ice when cleaning the outer wall of the tube bundle 2. The first rectangular sleeve 301 and the second rectangular sleeve 302 are connected by an adjusting member 9, which is a fastening bolt.

[0030] Regarding the specific structure of the sliding support frame 3, which is telescopic along its length, a circular sleeve with internal threads is connected to one side of the first rectangular sleeve 301. The circular sleeve is located on the side of the first rectangular sleeve 301 through which the second rectangular sleeve 302 passes. The adjusting member 9 is threadedly connected to the circular sleeve, and one end of it passes through the circular sleeve and the first rectangular sleeve 301 in sequence, reaching the outer wall of the second rectangular sleeve 302. By tightening the adjusting member 9, the total length of the first rectangular sleeve 301 and the second rectangular sleeve 302 is fixed. The total length of the first rectangular sleeve 301 and the second rectangular sleeve 302 is adapted to the width of the flue 1, so as to avoid large displacement of the sliding support frame 3 when it moves, and enable the sliding support frame 3 to move stably along the length direction of the vertical tube bundle 2.

[0031] See Figure 2 and Figure 5 As shown, the slide 4 has the following structure: the slide 4 includes a channel steel 401 with the opening facing downwards. The channel steel 401 is fastened to the first rectangular sleeve 301. Multiple sets of second rollers 402 are provided inside the channel steel 401. In this embodiment, at least four sets of matrix-arranged second rollers 402 are provided. The second rollers 402 slide in contact with the upper end face of the sliding support frame 3. That is, the second rollers 402 can slide in contact with the upper ends of the first rectangular sleeve 301 and the second rectangular sleeve 302 respectively. The sliding direction is the length direction of the sliding support frame 3, so that the slide 4 can drive the nozzle 7 to move along the length direction of the tube bundle 2, which facilitates the nozzle 7 to clean the outer wall of the tube bundle 2 with dry ice.

[0032] To facilitate the movement of the channel steel 401 along the length of the sliding support frame 3 under the drive of the second roller 402, and to prevent it from detaching from the sliding support frame 3, the lower end face of the channel steel 401 is set lower than the upper end face of the second rectangular sleeve 302, so that the two sides of the channel steel 401 play a guiding role.

[0033] See Figure 2As shown, when adjusting the position of the nozzle 7, the nozzle 7 drives the slide 4 to move on the upper surfaces of the first rectangular sleeve 301 and the second rectangular sleeve 302. Since the size of the first rectangular sleeve 301 is larger than that of the second rectangular sleeve 302, it is not convenient for the second roller 402 to move from the upper surface of the second rectangular sleeve 302 to the upper surface of the first rectangular sleeve 301. Therefore, a chamfer 3012 is provided on the upper part of the end of the first rectangular sleeve 301 through the second rectangular sleeve 302, so that the second roller 402 can move smoothly to the upper surface of the first rectangular sleeve 301 through the chamfer 3012, ensuring that the second roller 402 can move smoothly.

[0034] To prevent excessive force from causing the guide rod 403 and slide block 4 to detach from the sliding support frame 3 when cleaning the tube bundle 2 with the nozzle 7, a first elongated hole 3011 is provided on the upper end face of the first rectangular sleeve 301 along its length direction. A second elongated hole 3021 corresponding to the first elongated hole 3011 is provided on the upper end face of the second rectangular sleeve 302 along its length direction. The channel steel 401 is provided with a guide rod 403 that slides with the first elongated hole 3011 and the second elongated hole 3021 respectively. The lower end of the guide rod 403 is located inside the second rectangular sleeve 302, and a stop block 404 is provided at the lower end. The diameter of the stop block 404 is larger than the width of the elongated hole. The guide rod 403 can guide the channel steel 401 and prevent it from detaching from the sliding support frame 3 when it moves.

Claims

1. A ash removal device for a kiln head waste heat boiler, installed in the flue (1) of a preheating boiler, characterized in that, The system includes a sliding support frame (3), which is telescopic along its length. The sliding support frame (3) is slidably connected above the lower tube bundle (2) inside the flue (1), with the sliding direction perpendicular to the length direction of the tube bundle (2). A slide seat (4) is slidably connected to the sliding support frame (3) along its length. A universal joint (5) is provided on the slide seat (4). The universal joint (5) includes a cross shaft (501) and an active fork (502) and a driven fork (503) respectively hinged to it. The driven fork (503) is connected to the slide seat (4). A nozzle (7) is detachably connected to the active fork (502). The nozzle (7) is connected to an external dry ice spraying device through a pipe (8).

2. The ash removal device for a kiln head waste heat boiler according to claim 1, characterized in that, The sliding support frame (3) includes a first rectangular sleeve (301) and a second rectangular sleeve (302) fitted inside it. The first rectangular sleeve (301) and the second rectangular sleeve (302) are provided with first roller sets at opposite ends. The first rectangular sleeve (301) and the second rectangular sleeve (302) are connected by an adjusting member (9).

3. The ash removal device for a kiln head waste heat boiler according to claim 2, characterized in that, The first rectangular sleeve (301) is connected to a circular sleeve with internal threads on one side. The circular sleeve is located on the side where the first rectangular sleeve (301) passes through the second rectangular sleeve (302). The adjusting member (9) is threadedly connected to the circular sleeve, and one end of it passes through the first rectangular sleeve (301) and reaches the outer wall of the second rectangular sleeve (302).

4. The ash removal device for a kiln head waste heat boiler according to claim 1, characterized in that, The slide block (4) includes a channel steel (401) with the opening facing downward. The channel steel (401) is fastened to the first rectangular sleeve (301). Multiple sets of second rollers (402) are provided inside the channel steel (401). The second rollers (402) slide in contact with the sliding support frame (3) in the direction of the length of the sliding support frame (3).

5. The ash removal device for a kiln head waste heat boiler according to claim 4, characterized in that, The lower end face of the channel steel (401) is lower than the upper end face of the second rectangular sleeve (302).

6. The ash removal device for a kiln head waste heat boiler according to claim 4, characterized in that, The first rectangular sleeve (301) has a first elongated hole (3011) on its upper end face along its length direction, and the second rectangular sleeve (302) has a second elongated hole (3021) corresponding to the first elongated hole (3011) on its upper end face along its length direction. The channel steel (401) is provided with guide rods (403) that slide with the first elongated hole (3011) and the second elongated hole (3021) respectively.

7. The ash removal device for a kiln head waste heat boiler according to claim 6, characterized in that, The lower end of the guide rod (403) is located inside the second rectangular sleeve (302), and a stop block (404) is provided at the lower end. The diameter of the stop block (404) is greater than the width of the long hole.

8. The ash removal device for a kiln head waste heat boiler according to claim 1, characterized in that, The active fork (502) has a slot (6) at one end, and the nozzle (7) is engaged with the slot (6).

9. The ash removal device for a kiln head waste heat boiler according to claim 3, characterized in that, The upper part of the first rectangular sleeve (301) through which the second rectangular sleeve (302) passes is chamfered (3012).

Images