A packing cleaning device

Abstract

This utility model relates to the field of packing cleaning technology, and provides a packing cleaning device applied to a packing cavity. A rotating structure is installed within the packing cavity, and sealing packing is present between the inner peripheral wall of the packing cavity and the outer peripheral wall of the rotating structure. The device includes a support unit and a crushing unit. The support unit has a first arc-shaped surface and a second arc-shaped surface arranged radially along the rotating structure. The first arc-shaped surface is used to conform to the outer peripheral wall of the rotating structure, and the support unit is used to rotate around the rotating structure. The crushing unit has a first end and a second end arranged sequentially along the axial direction of the rotating structure towards the bottom of the packing cavity. The crushing unit is located at the first end and is used to crush the sealing packing. This utility model solves the technical problems of low cleaning efficiency, poor cleanliness, and damage to the inner wall of the packing cavity and the outer peripheral wall of the sootblowing gun in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of packing cleaning technology, specifically to a packing cleaning device. Background Technology

[0002] Steam soot blowers are an indispensable auxiliary system for equipment such as coal-fired, biomass, or waste incineration boilers. Their core function is to remove the ash and scale accumulated on the boiler's heating surfaces (such as water-cooled walls, superheaters, and reheaters) to ensure the boiler's heat exchange efficiency and safe and stable operation.

[0003] Taking a long telescopic steam sootblower as an example, it can be structurally divided into two main parts: the fixed part and the moving part. The fixed part mainly refers to the wall box. The wall box is a box structure firmly installed on the boiler wall, providing support and guidance for the moving part of the steam sootblower. Inside the wall box is a key sub-component for achieving dynamic sealing—the packing chamber. Therefore, the packing chamber is a core component of the wall box, its function being to form a seal between the moving sootblowing tube and the fixed wall box. The moving part can be collectively referred to as the traveling box or the sootblower body. This is a complex assembly integrating drive, transmission, and steam control. Its main components include: the sootblowing tube: the core component performing the cleaning task, a high-temperature resistant steel pipe with a nozzle at the front end; the drive mechanism: including a motor and gearbox, driving the entire moving part forward and backward along the guide rail, and rotating the sootblowing tube; and the steam valve: this valve is installed at the rear end of the moving part (traveling box) and connected to the steam inlet of the sootblowing tube. Its function is to open and allow high-pressure steam to enter the sootblowing lance only after the lance has reached a predetermined position in the furnace. Therefore, the valve moves together with the traveling box. The working principle is as follows: After startup, the drive mechanism drives the entire moving part (traveling box, sootblowing lance, valve, etc.) forward; the sootblowing lance passes through the wall box fixed to the furnace wall and its internal packing cavity, extending into the high-temperature furnace; when the lance reaches the predetermined working area, the valve at the rear end automatically opens, and high-pressure steam rushes into the lance and is ejected at high speed from the front nozzle to purge the boiler heating surface. During this process, the lance usually rotates continuously; after purging is completed, the valve closes, cutting off the steam, and at the same time, the drive mechanism drives the moving part to run in the opposite direction, completely retracting the sootblowing lance outside the furnace.

[0004] In existing technologies, to prevent the leakage of high-temperature flue gas and high-pressure steam, the packing cavity must be filled with sealing material, i.e., packing. Given the working environment of steam sootblowers, high-temperature resistant, self-lubricating graphite rings are typically used as packing. However, with the frequent reciprocating and rotating motion of the steam sootblower, the graphite packing rings will wear down due to continuous friction. Simultaneously, under the long-term effects of high temperature and gland pressure, the graphite will become brittle and age, eventually fracturing into irregular small pieces or powder. These broken packings lose their original integrity and elasticity, and can no longer tightly adhere to the surface of the sootblowing nozzle, thus forming leakage channels. Once high-temperature, high-pressure steam leaks, it will pose a serious safety threat to on-site equipment and personnel. Therefore, regularly cleaning and replacing the failed graphite packing in the packing cavity is a necessary maintenance task to ensure the safe operation of the steam sootblower.

[0005] The traditional cleaning method uses a flathead screwdriver and a wire (or hook). Maintenance personnel use a screwdriver to reach into the narrow packing cavity, then pry and break up the hardened and broken old packing bit by bit, and finally use a wire hook to remove the fragments.

[0006] However, the lack of dedicated cleaning equipment leads to a mismatch between tools and work objects, which not only affects cleaning efficiency and cleanliness, but also easily scratches the smooth surfaces of the inner peripheral wall of the packing chamber and the outer peripheral wall of the sootblowing gun barrel. These scratches can become new permanent leakage channels. Utility Model Content

[0007] This invention provides a packing cleaning device to solve the technical problems of low cleaning efficiency, poor cleanliness, and damage to the inner wall of the packing cavity and the outer peripheral wall of the sootblowing gun tube in the prior art.

[0008] The above-mentioned objectives of this utility model can be achieved by the following technical solutions:

[0009] This utility model provides a packing cleaning device applied to a packing cavity. A rotating structure is disposed within the packing cavity, and a sealing packing is provided between the inner peripheral wall of the packing cavity and the outer peripheral wall of the rotating structure. The device includes a support unit and a crushing unit. The support unit has a first arc-shaped surface and a second arc-shaped surface arranged radially along the rotating structure. The first arc-shaped surface is used to conform to the outer peripheral wall of the rotating structure, and the support unit is used to rotate around the rotating structure. The crushing unit has a first end and a second end arranged axially along the rotating structure. The first end faces the bottom of the packing cavity, and the crushing unit is disposed at the first end for crushing the sealing packing.

[0010] According to one embodiment of the present invention, the support unit is configured as a plate-like structure.

[0011] According to one embodiment of the present invention, an annular cavity is formed between the inner peripheral wall of the packing cavity and the outer peripheral wall of the rotating structure; the arc length of the support unit is one-third to one-half of the circumference of the annular cavity.

[0012] According to one embodiment of the present invention, the crushing unit is configured with a toothed structure.

[0013] According to one embodiment of the present invention, the projection of the crushing unit on the bottom of the packing cavity is located within the projection of the support unit on the bottom of the packing cavity.

[0014] According to one embodiment of the present invention, along the axial direction of the rotating structure, the length of the support unit is greater than the length of the packing cavity.

[0015] According to one embodiment of the present invention, along the axial direction of the rotating structure, the total length of the support unit and the crushing unit is L0, the length of the filling cavity is L1, and the difference between L0 and L1 is between 15 cm and 20 cm.

[0016] According to one embodiment of the present invention, it further includes at least one grip disposed at the second end.

[0017] According to one embodiment of the present invention, there are multiple grips, and the multiple grips are arranged at intervals along the circumference of the rotating structure.

[0018] According to one embodiment of the present invention, there are two grips, and the two grips are arranged symmetrically along the radial direction of the rotating structure.

[0019] The features and advantages of this utility model's filler cleaning device are:

[0020] In use, the first arc-shaped surface of the support unit is attached to the outer peripheral wall of the rotating structure. The entire device is then rotated around the rotating structure manually or by power. The crushing unit can uniformly crush the sealing packing in the packing cavity in a 360-degree circumferential manner, significantly improving cleaning efficiency and cleanliness compared to traditional cleaning methods. Simultaneously, the first and second arc-shaped surfaces are less likely to damage the inner wall of the packing cavity and the outer peripheral wall of the sootblowing gun. This solves the technical problems of low cleaning efficiency, poor cleanliness, and damage to the inner wall of the packing cavity and the outer peripheral wall of the sootblowing gun in existing technologies. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the filler cleaning device of this utility model in use;

[0023] Figure 2 This is a perspective view of the filler cleaning device of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Packing chamber; 200. Rotating structure; 1. Packing cleaning device; 11. Support unit; 111. First end; 112. Second end; 12. Crushing unit; 13. Handle. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figures 1 to 2 As shown, this utility model provides a packing cleaning device 1, applied to a packing cavity 100. A rotating structure 200 is disposed in the packing cavity 100. A sealing packing is provided between the inner peripheral wall of the packing cavity 100 and the outer peripheral wall of the rotating structure 200. The device includes a support unit 11 and a crushing unit 12. The support unit 11 has a first arcuate surface and a second arcuate surface arranged radially along the rotating structure 200. The first arcuate surface is used to fit against the outer peripheral wall of the rotating structure 200. The support unit 11 is used to rotate around the rotating structure 200. The crushing unit 12 has a first end 111 and a second end 112 arranged axially along the rotating structure 200. The first end faces the bottom of the packing cavity 100. The crushing unit 12 is disposed at the first end 111 and is used to crush the sealing packing.

[0030] In practical implementation, the first arc-shaped surface of the support unit 11 is attached to the outer peripheral wall of the rotating structure 200. The entire device is rotated around the rotating structure 200 by manual or power drive. The crushing unit 12 can uniformly crush the sealing packing in the packing cavity 100 in a 360-degree circumferential manner. Compared with traditional cleaning methods, this greatly improves cleaning efficiency and cleanliness. At the same time, the first and second arc-shaped surfaces are less likely to damage the inner wall of the packing cavity 100 and the outer peripheral wall of the sootblowing gun. This solves the technical problems of low cleaning efficiency, poor cleanliness, and damage to the inner wall of the packing cavity 100 and the outer peripheral wall of the sootblowing gun in the prior art.

[0031] In this embodiment, the rotating structure 200 can be a soot blowing gun barrel.

[0032] According to one embodiment of the present invention, the support unit 11 is configured as a plate-like structure.

[0033] In practical implementation, the support unit 11 is designed as a plate structure, which makes the support unit 11 simple in structure and easy to manufacture, thereby reducing the production cost of the entire packing cleaning device 1. During use, this thinner plate structure can more easily extend into the narrow space of the packing cavity 100 for operation, thus broadening its applicability. While ensuring sufficient support strength for the crushing unit 12, it effectively reduces the overall weight of the device, greatly improving the convenience of carrying and operating by on-site maintenance personnel.

[0034] In this embodiment, the support unit 11 is an arc-shaped plate.

[0035] According to one embodiment of the present invention, an annular cavity is formed between the inner peripheral wall of the packing cavity 100 and the outer peripheral wall of the rotating structure 200; the arc length of the support unit 11 is one-third to one-half of the circumference of the annular cavity.

[0036] In specific implementation, the arc length of the support unit 11 is limited to one-third to one-half of the circumference of the annular cavity. On the one hand, when the arc length is not less than one-third, it can ensure that the support unit 11 has a sufficiently large contact area with the outer peripheral wall of the rotating structure 200, thereby providing stable and reliable rotational guidance support during use, avoiding shaking or deflection of the crushing unit 12 when crushing the packing, ensuring the smoothness of the cleaning process and the protection effect on the cavity wall; on the other hand, when the arc length is not greater than one-half, it also reserves sufficient operating space for the insertion and removal of the device and the cleaning of the crushed packing, which is convenient for maintenance personnel to operate.

[0037] In this embodiment, the thickness of the arc plate can be one-third to one-half of the radial length of the annular cavity along the rotating structure 200.

[0038] According to one embodiment of the present invention, the crushing unit 12 is configured with a toothed structure.

[0039] According to one embodiment of the present invention, the tooth-like structure includes a plurality of teeth.

[0040] In specific implementation, the crushing unit 12 is configured as a toothed structure, so that when the packing cleaning device 1 rotates around the rotating structure 200 during use, the multiple teeth of the toothed structure can concentrate the operating force on a point or line, thereby producing an efficient scraping and crushing effect on the hardened and brittle sealing packing.

[0041] In this embodiment, the teeth can be four or five, that is, there are four or five teeth, and the tooth height can be two centimeters.

[0042] According to one embodiment of the present invention, the projection of the crushing unit 12 on the bottom of the packing cavity 100 is located within the projection of the support unit 11 on the bottom of the packing cavity 100.

[0043] In practical implementation, the projection of the crushing unit 12 on the bottom of the packing cavity 100 is set within the projection of the support unit 11 on the bottom of the packing cavity 100. This means that, radially (or circumferentially), the crushing unit 12, which plays a crushing role, will not exceed the contour range of the support unit 11, which plays a supporting and guiding role. This effectively avoids the relatively sharp crushing unit 12 from directly scraping or colliding with the inner wall of the packing cavity 100, and also makes the structure of the entire device more compact and integrated.

[0044] According to one embodiment of the present invention, along the axial direction of the rotating structure 200, the length of the support unit 11 is greater than the length of the packing cavity 100.

[0045] In practice, the axial length of the support unit 11 is set to be greater than the length of the packing cavity 100, so that even when the crushing unit 12 has penetrated to the deepest part (bottom) of the packing cavity 100, a portion of the support unit 11 will still be exposed outside the packing cavity 100. This exposed portion provides the operator with a direct and convenient point of grip and force application, or prevents the subsequent handle 13 from interfering with the cavity wall of the packing cavity 100.

[0046] In this embodiment, along the axial direction of the rotating structure 200, the total length of the support unit 11 and the crushing unit 12 is L0, and the length of the filling cavity 100 is L1. L0 is greater than L1, and the difference between L0 and L1 is between 15 cm and 20 cm.

[0047] According to one embodiment of the present invention, it further includes at least one grip 13 disposed at the second end 112.

[0048] In practical implementation, at least one grip 13 is added to the second end 112, providing the operator with a specially designed, ergonomic point of force application. During use, the operator can directly grip the grip 13 to push, pull, and rotate the entire device. Compared to directly gripping the edge of the support unit 11, the grip 13 provides a more comfortable and secure grip, allowing the operator to apply rotational torque more effortlessly and effectively to break the packing material, while also enhancing the stability and precision of the device operation.

[0049] In this embodiment, the grip 13 is made of a hollow steel tube with an outer diameter of 15 mm to 20 mm, which is welded to the second end 112.

[0050] In this embodiment, there are multiple grips 13, and the multiple grips 13 are arranged at intervals along the circumference of the rotating structure 200.

[0051] In practice, multiple handles 13 are arranged at intervals along the circumference of the rotating structure 200, allowing operators to use both hands simultaneously. For example, by pushing or pulling the oppositely arranged handles 13, a balanced rotational torque is applied. This balanced force application method greatly eliminates the lateral force that a single handle 13 may generate, preventing the device from tilting or swaying during rotation. This ensures that the support unit 11 always operates stably under the guidance of the rotating structure 200, providing stronger protection for the inner wall of the packing cavity 100 and the outer peripheral wall of the rotating structure 200. At the same time, two-handed operation can apply a larger and more continuous torque, making it easier to break up stubborn caking packing and significantly improving cleaning efficiency.

[0052] According to one embodiment of the present invention, there are two grips 13, and the two grips 13 are arranged symmetrically along the radial direction of the rotating structure 200.

[0053] In practice, the above-mentioned structural design allows the operator to apply a balanced force of pushing and pulling on the two handles 13, forming a pure rotational torque. This minimizes the lateral force component and makes the device more stable during use.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A packing cleaning device applied to a packing cavity (100), a rotating structure (200) is arranged in the packing cavity (100), and a sealing packing is arranged between the inner circumferential wall of the packing cavity (100) and the outer circumferential wall of the rotating structure (200), characterized in that, include: Support unit (11) and crushing unit (12); The support unit (11) has a first arcuate surface and a second arcuate surface arranged radially along the rotating structure (200). The first arcuate surface is used to fit against the outer peripheral wall of the rotating structure (200), and the support unit (11) is used to rotate around the rotating structure (200). The crushing unit (12) has a first end (111) and a second end (112) arranged along the axial direction of the rotating structure (200), the first end facing the bottom of the packing cavity (100), and the crushing unit (12) is arranged at the first end (111) for crushing the sealing packing.

2. The filler cleaning device of claim 1, wherein The support unit (11) is configured as a plate structure.

3. The packing cleaning device according to claim 2, characterized in that, There is an annular cavity between the inner peripheral wall of the packing cavity (100) and the outer peripheral wall of the rotating structure (200); The arc length of the support unit (11) is one-third to one-half of the circumference of the annular cavity.

4. The packing cleaning device according to claim 1, characterized in that, The crushing unit (12) is configured with a toothed structure.

5. The packing cleaning device according to any one of claims 1 to 4, characterized in that, The projection of the crushing unit (12) on the bottom of the packing cavity (100) is located within the projection of the support unit (11) on the bottom of the packing cavity (100).

6. The packing cleaning device according to any one of claims 1 to 4, characterized in that, Along the axial direction of the rotating structure (200), the length of the support unit (11) is greater than the length of the packing cavity (100).

7. The packing cleaning device according to claim 6, characterized in that, Along the axial direction of the rotating structure (200), the total length of the support unit (11) and the crushing unit (12) is L0, the length of the packing cavity (100) is L1, and the difference between L0 and L1 is between 15 cm and 20 cm.

8. The packing cleaning device according to any one of claims 1 to 4, characterized in that, It also includes at least one grip (13) disposed at the second end (112).

9. The packing cleaning device according to claim 8, characterized in that, There are multiple grips (13), and the multiple grips (13) are arranged at intervals along the circumference of the rotating structure (200).

10. The packing cleaning device according to claim 8, characterized in that, There are two grips (13), and the two grips (13) are arranged radially symmetrically along the rotating structure (200).

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