A duct polishing device and a ventilation duct

Abstract

The utility model relates to the field of ventilation pipeline discloses a pipeline polishing device and ventilation pipeline. Its include base plate, right angle board, reinforcing component and drive assembly, rectangular ventilation pipeline is suitable for positioning and is placed in the top of base plate, right angle board and the right angle of inside rectangular ventilation pipeline match, right angle board is suitable for inserting and is slipped in rectangular ventilation pipeline, the outer wall of right angle board is wrapped with polishing part, right angle board interval is equipped with four, every right angle board all is equipped with polishing part, drive assembly is connected with four right angle boards to drive four right angle boards reciprocating movement, reinforcing component is connected with four right angle boards to reinforce four right angle boards. The utility model right angle board and the polishing part of setting on right angle board are the board body that adapts to the right angle edge of inside rectangular ventilation pipeline, and the structure that drive assembly drives right angle board to drive the reciprocating movement of polishing part forms special polishing inner edge, reduces the generation of polishing dead angle, can improve the service life of subsequent anticorrosive effect and pipeline.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, and more specifically, to a duct grinding device and a ventilation duct. Background Technology

[0002] Ventilation ducts are typically assembled from multiple rectangular duct sections, which are formed from stainless steel plates through bending and welding. After each duct section is formed, its inner and outer surfaces are ground using a grinding device to remove oxide layers and welding residue, facilitating better adhesion of the anti-corrosion coating during subsequent application. However, existing grinding devices use circular grinding heads, which cannot evenly and effectively grind the right-angled edges inside the ventilation duct, easily leaving un-ground dead corners. This can prevent the anti-corrosion material from bonding properly to these areas, leading to rust and corrosion over time and affecting the overall lifespan of the ventilation duct. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model first provides a pipe grinding device, including a base plate, right-angle plates, a reinforcing component, and a driving component mounted on a frame. A rectangular ventilation duct is adapted to be positioned on the top of the base plate. The right-angle plates match the right angles inside the rectangular ventilation duct and are adapted to be inserted into and slide within the rectangular ventilation duct. The outer wall of each right-angle plate is covered with a grinding element. Four right-angle plates are spaced apart, and each right-angle plate is provided with the grinding element. The driving component is connected to the four right-angle plates to drive them to reciprocate. The reinforcing component is connected to the four right-angle plates to reinforce them.

[0004] Optionally, the base plate is provided with a positioning fixture on the top, and both ends of the rectangular ventilation duct are bent outward with flanges, each flange having bolt holes; the positioning fixture includes a support plate and a positioning component, the support plate being located between the two flanges to support the rectangular ventilation duct, and the positioning component being located on the side of the rectangular ventilation duct away from the drive assembly, and being detachably connected to the flanges by bolts.

[0005] Optionally, the positioning member has a through hole for driving the right-angle plate to be inserted, and the diameter of the through hole is larger than the inner diameter of the rectangular ventilation duct.

[0006] Optionally, the polishing element is sandpaper or abrasive disc.

[0007] Optionally, a pressure plate may be detachably provided on the right-angle plate, the pressure plate being adapted to press and fix the grinding part onto the right-angle plate.

[0008] Optionally, the driving assembly includes a linear module and a sliding plate mounted on the top of the base plate. The linear module is connected to the sliding plate to drive the sliding plate to reciprocate. The right-angle plate is connected to the sliding plate and moves synchronously.

[0009] Optionally, a bolt post is fixedly installed on the side of the right-angle plate near the sliding plate. The sliding plate has a cross-shaped adjustment groove for the bolt post to be inserted and moved in a horizontal or vertical direction. The bolt post is connected to the sliding plate by a nut.

[0010] Optionally, the reinforcement assembly includes two sets of vertical connecting components and a connecting plate. Each set of vertical connecting components connects and supports two right-angled plates arranged vertically. The connecting plate is connected to the two sets of vertical connecting components.

[0011] Optionally, the vertical connection assembly includes a threaded sleeve and two connectors. The two connectors are threadedly inserted into both ends of the threaded sleeve and connected to the corresponding upper and lower right-angle plates. When the threaded sleeve is rotated, the two connectors extend or retract synchronously.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] 1. The right-angle plate and the grinding parts set on the right-angle plate are plates that are adapted to the right-angle edges inside the rectangular ventilation duct. The drive component drives the right-angle plate to move back and forth to form a structure for grinding the inner edges. Then, the inner wall surface can be ground by conventional grinding equipment, which reduces the generation of grinding dead corners and can improve the subsequent anti-corrosion effect and the service life of the pipeline.

[0014] 2. Since the rectangular ventilation duct itself has a certain length, the corresponding right-angle plate will also have a certain length. During the sanding process, the overhanging end of the right-angle plate is prone to vibration due to friction, which affects the sanding effect. However, the reinforcement component can reinforce and support the four right-angle plates, reduce the vibration of the right-angle plates, and improve the sanding effect.

[0015] 3. Due to the errors that may occur during the processing of rectangular ventilation ducts, the cross adjustment groove on the sliding plate allows the position of each right-angle plate to be adjusted for adaptation, making the grinding part fit better with the inner edges of the ventilation duct and improving the grinding effect. In addition, it is also suitable for ventilation ducts of various sizes, only requiring the replacement of the appropriate positioning part.

[0016] 4. For ventilation ducts of different heights, the extension length of the two connectors can be adjusted by rotating the threaded sleeve, so that the reinforcement components can be adjusted according to the position of the right angle plate.

[0017] In addition, this utility model provides a ventilation duct, which is processed by the duct grinding device described above.

[0018] Compared with the prior art, the ventilation duct described in this utility model has the same advantages as the above-mentioned duct grinding device, which will not be repeated here. Attached Figure Description

[0019] Figure 1 This is a structural diagram showing the working state of the pipe grinding device in this embodiment of the present invention;

[0020] Figure 2 This is a structural diagram of the pipe grinding device in an embodiment of the present invention;

[0021] Figure 3 This is a structural diagram of the right-angle plate, the reinforcing component, and the sliding plate in an embodiment of this utility model;

[0022] Figure 4 This is an exploded view of the right-angle plate and the reinforcing components in the embodiment of this utility model;

[0023] Figure 5 This is a structural diagram of the right-angle plate, the reinforcing component, and the driving component in an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Base plate; 11. Positioning fixture; 12. Support plate; 13. Positioning component; 14. Through hole; 2. Right-angle plate; 21. Grinding component; 22. Pressure plate; 23. Bolt post; 24. Threaded connection post; 3. Reinforcing assembly; 31. Vertical connection assembly; 32. Connecting plate; 33. Threaded sleeve; 34. Connector; 4. Drive assembly; 41. Linear module; 42. Sliding plate; 43. Cross adjustment groove. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-5 This application will be described in further detail.

[0026] In a first aspect, this utility model embodiment provides a pipe grinding device, referring to... Figures 1 to 3The pipe grinding device includes a base plate 1, right-angle plates 2, a reinforcing assembly 3, and a drive assembly 4 mounted on a frame. A positioning fixture 11 is provided on the top of the base plate 1, allowing the rectangular ventilation duct to be positioned and installed on top of the base plate 1. The right-angle plates 2 match the right angles inside the rectangular ventilation duct. The outer wall of the right-angle plates 2 is covered with grinding elements 21. The right-angle plates 2 and grinding elements 21 are suitable for insertion into the rectangular ventilation duct and sliding within it for grinding. Four right-angle plates 2 are spaced apart, each with a grinding element 21. The drive assembly 4 is connected to the four right-angle plates 2, driving them to reciprocate at a set frequency to form a structure specifically for grinding the inner corners. The inner wall surface can then be ground using a conventional grinding device, reducing the generation of grinding dead angles. The reinforcing assembly 3 is connected to the four right-angle plates 2 to reinforce them, reducing vibration during grinding and improving the grinding effect.

[0027] The rectangular ventilation duct has outward-bent flanges at both ends, with multiple bolt holes spaced apart on the flanges. During installation, bolts are inserted into these holes, and nuts are used to secure adjacent sections of the rectangular ventilation duct together. The positioning fixture 11 includes a support plate 12 and a positioning element 13. The support plate 12 is bolted to the top of the base plate 1 and positioned between the two flanges to support the rectangular ventilation duct. The flanges are spaced apart from the base plate 1, ensuring the rectangular ventilation duct is horizontal. The positioning element 13 is located on the side of the rectangular ventilation duct away from the drive assembly 4. It is bolted into the bolt holes and connected to the flanges with nuts, thus positioning the rectangular ventilation duct. After grinding, the nuts are unscrewed, and the rectangular ventilation duct can be removed.

[0028] Reference Figure 2 and Figure 3 The positioning component 13 is an L-shaped plate, comprising a welded horizontal plate and a vertical plate. Two elongated holes are spaced apart on the horizontal plate, their length direction aligned with the sliding direction of the right-angle plate 2. Bolts are inserted into these holes and threadedly connected to the base plate 1 to fix the positioning component 13 to the base plate 1. The elongated holes allow the position of the positioning component 13 to be adjusted. A through hole 14, communicating with the interior of a rectangular ventilation duct, is provided on the vertical plate. The diameter of the through hole 14 is larger than that of the rectangular ventilation duct, allowing the right-angle plate 2 and the grinding component 21 to be inserted into the through hole 14 without contacting the positioning component 13 during movement. Multiple mounting holes are spaced apart on the vertical plate of the positioning component 13, into which bolts fixing the positioning component 13 and the flange are inserted. Due to potential errors in the bolt holes on the flange during drilling, the diameter of the mounting holes is larger than the threaded holes on the flange, allowing for bolt adjustment.

[0029] The grinding element 21 wraps around and adheres to the two right-angled surfaces of the outer wall of the right-angle plate 2, so that the grinding element 21 has a right-angled surface that fits into the right angle of the inner rectangular ventilation duct. The grinding element 21 can be sandpaper or a hard abrasive disc; since the grinding element 21 needs to be long and narrow and is a non-standard part, sandpaper is preferred in this embodiment because it is less expensive. In another embodiment, the grinding element 21 is an abrasive disc.

[0030] Reference Figures 2 to 4 Multiple bolts are welded and fixed to both inner walls of the right-angle plate 2, and these bolts are spaced apart along the length of the right-angle plate 2. Each inner wall of the right-angle plate 2 has a pressure plate 22, which is fitted onto the bolts on the same inner wall and then detachably fixed to the right-angle plate 2 via nuts. The grinding part 21 extends to the area of ​​the two pressure plates 22 on both sides. The pressure plates 22, secured with nuts, press the grinding part 21 tightly onto the right-angle plate 2, thus fixing the grinding part 21 to the right-angle plate 2. To replace the grinding part 21, simply remove the two pressure plates 22. The pressure plates 22 are made of rubber, so the clamping force between the pressure plates 22 and the right-angle plate 2 generates sufficient friction to prevent the grinding part 21 from shifting.

[0031] Reference Figures 2 to 5 The drive assembly 4 includes a linear module 41 (existing technology, with a sliding part) and a sliding plate 42. The linear module 41 is fixedly mounted to the top of the base plate 1 by bolts. The sliding plate 42 is L-shaped and is fixedly connected to the sliding part of the linear module 41 by bolts, so that the linear module 41 can drive the sliding plate 42 to reciprocate. Four right-angle plates 2 are all connected to the sliding plate 42 and move synchronously. The speed at which the linear module 41 drives the sliding plate 42 and the four right-angle plates 2 can be changed by the control program, so as to achieve the grinding effect desired by the customer. In this embodiment, two linear modules 41 are preferably provided, and the two linear modules 41 are arranged at intervals. The sliding plate 42 is connected to the sliding part of the two linear modules 41 by bolts, so that the sliding plate 42 is more stable when moving and less prone to tilting or swaying. Among them, the linear module 41 drives the sliding plate 42 to slide by a length greater than the length of the rectangular ventilation duct. Therefore, when the rectangular ventilation duct is installed on the positioning member 13, the right-angle plate 2 can be moved to the end position without interference.

[0032] Each right-angle plate 2 has a bolt post 23 welded and fixed to the side near the sliding plate 42. The sliding plate 42 has the same number of cross-shaped adjustment slots 43 at corresponding positions. The bolt posts 23 are inserted and pass through the cross-shaped adjustment slots 43, and then fixed to the sliding plate 42 by washers and nuts. The cross-shaped adjustment slots 43 allow the bolt posts 23 and the right-angle plates 2 to move and adjust horizontally or vertically. On the one hand, this allows the position of the right-angle plates 2 to be adjusted according to errors generated during the processing of rectangular ventilation ducts, making the grinding part 21 fit more closely to the inner edges of the ventilation duct and improving the grinding effect; on the other hand, it is also compatible with various sizes of ventilation ducts within the adjustment range of the cross-shaped adjustment slots 43, requiring only the replacement of the corresponding positioning part 13.

[0033] Reference Figures 2 to 5 The reinforcing component 3 is spaced apart from the sliding plate 42 and connects and reinforces the four right-angle plates 2. This prevents the overhanging ends of the right-angle plates 2 from vibrating due to friction during grinding, thus improving the stability of the four right-angle plates 2 during movement. The reinforcing component 3 includes two sets of vertical connecting components 31 and a connecting plate 32. Each set of vertical connecting components 31 connects and supports two vertically arranged right-angle plates 2, and the connecting plate 32 is connected to the two sets of vertical connecting components 31 by bolts. The two sets of vertical connecting components 31 have the same structure; the following description uses one set of vertical connecting components 31 as an example.

[0034] The vertical connecting assembly 31 includes a threaded sleeve 33 and two connectors 34. The two connectors 34 are located at both ends of the threaded sleeve 33, and both connectors 34 are inserted into and threadedly connected to the threaded sleeve 33. A threaded connecting post 24, which is a stepped post, is welded and fixed to the inner wall of each right-angle plate 2. The connector 34 is fitted onto the threaded connecting post 24 and fixedly connected to it by a nut. When the threaded sleeve 33 is rotated, the two connectors 34 extend or retract synchronously. When the bolt post 23 is adjusted vertically within the cross-shaped adjustment groove 43, the overall length of the vertical connecting assembly 31 can be adjusted by rotating the threaded sleeve 33.

[0035] Reference Figures 2 to 5 The outer circumferential wall of the threaded sleeve 33 is provided with multiple threaded grooves spaced apart. The connecting plate 32 is provided with multiple through holes spaced apart along its length. Bolts are inserted into these through holes, and the bolts are threaded into the threaded grooves, thus connecting the two threaded sleeves 33 to the connecting plate 32. When the bolt post 23 is adjusted vertically within the cross-shaped adjustment groove 43, the corresponding through holes on the connecting plate 32 align with the corresponding threaded grooves, making the reinforcing component 3 applicable to a wide range of applications.

[0036] The implementation principle of the pipe grinding device in this application embodiment is as follows: the right-angle plate 2 and the grinding component 21 set on the right-angle plate 2 are plates adapted to the right-angle edges inside the rectangular ventilation duct. The driving component 4 drives the right-angle plate 2 to move the grinding component 21 back and forth to form a structure specifically for grinding the inner edges. Then, the inner wall surface can be ground by conventional grinding equipment, reducing the generation of grinding dead corners. Since the rectangular ventilation duct itself has a certain length, the corresponding right-angle plate 2 will also have a certain length. During the grinding process, the overhanging end of the right-angle plate 2 is prone to vibration due to friction, affecting the grinding effect. However, the reinforcing component 3 can reinforce and support the four right-angle plates 2, reducing the vibration of the right-angle plates 2 and improving the grinding effect.

[0037] Secondly, another embodiment of the present invention provides a ventilation duct, which is processed by the duct grinding device described in the first aspect.

[0038] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0039] In the description of this disclosure, 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," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0042] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A pipe polishing device, characterized by: The assembly includes a base plate (1), right-angle plates (2), a reinforcing component (3), and a drive component (4) mounted on a frame. A rectangular ventilation duct is positioned on the top of the base plate (1). The right-angle plate (2) matches the right angle inside the rectangular ventilation duct. The right-angle plate (2) is suitable for insertion and sliding within the rectangular ventilation duct. The outer wall of the right-angle plate (2) is covered with a grinding element (21). Four right-angle plates (2) are spaced apart, and each right-angle plate (2) is provided with the grinding element (21). The drive component (4) is connected to the four right-angle plates (2) to drive the four right-angle plates (2) to reciprocate. The reinforcing component (3) is connected to the four right-angle plates (2) to reinforce the four right-angle plates (2).

2. The pipe sander device of claim 1, wherein: The base plate (1) is provided with a positioning fixture (11) on the top. Both ends of the rectangular ventilation duct are bent outward with flanges, and each flange is provided with bolt holes. The positioning fixture (11) includes a support plate (12) and a positioning component (13). The support plate (12) is located between the two flanges to support the rectangular ventilation duct. The positioning component (13) is located on the side of the rectangular ventilation duct away from the drive assembly (4) and is detachably connected to the flange by bolts.

3. The pipe grinding device according to claim 2, characterized in that: The positioning member (13) has a through hole (14) for driving the right-angle plate (2) to be inserted. The diameter of the through hole (14) is larger than the inner diameter of the rectangular ventilation duct.

4. The pipe grinding device according to claim 1, characterized in that: The polishing component (21) is sandpaper or abrasive sheet.

5. The pipe grinding device according to claim 1, characterized in that: A pressure plate (22) is detachably mounted on the right-angle plate (2), and the pressure plate (22) is adapted to press and fix the grinding part (21) onto the right-angle plate (2).

6. The pipe grinding apparatus according to any one of claims 1-5, characterized in that: The drive assembly (4) includes a linear module (41) and a sliding plate (42) mounted on the top of the base plate (1). The linear module (41) is connected to the sliding plate (42) to drive the sliding plate (42) to reciprocate. The right-angle plate (2) is connected to the sliding plate (42) and moves synchronously.

7. The pipe grinding device according to claim 6, characterized in that: A bolt post (23) is fixedly installed on the side of the right-angle plate (2) near the sliding plate (42). The sliding plate (42) has a cross adjustment groove (43) for inserting the bolt post (23) and moving it in the horizontal or vertical direction. The bolt post (23) is connected to the sliding plate (42) by a nut.

8. The pipe grinding device according to claim 6, characterized in that: The reinforcement component (3) includes two sets of vertical connecting components (31) and a connecting plate (32). Each set of vertical connecting components (31) connects and supports two right-angled plates (2) arranged vertically. The connecting plate (32) is connected to the two sets of vertical connecting components (31).

9. The pipe grinding device according to claim 8, characterized in that: The vertical connection assembly (31) includes a threaded sleeve (33) and two connectors (34). The two connectors (34) are threadedly inserted into the two ends of the threaded sleeve (33) and connected to the corresponding upper and lower right angle plates (2). When the threaded sleeve (33) is rotated, the two connectors (34) extend or retract synchronously.

10. A ventilation duct, characterized in that, Includes the pipe polishing apparatus as described in any one of claims 1-9.

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