Building air conditioner ventilation pipeline inner wall self-cleaning scale removal device

Abstract

The utility model relates to pipeline cleaning technical field, and disclose a kind of building air conditioning ventilation pipeline inner wall self-cleaning scale removal device, including drive assembly, drive assembly is by drive equipment and multiple pulley component, the side fixedly connected with casing of drive assembly, fixedly connected with locating shaft in casing;Through the telescopic movement of telescopic part, cooperate the slope transmission of oblique trapezoidal block and clamping body, can drive shell plate and scraper synchronous expansion or shrink, can flexibly adapt to the pipeline of different inner diameter;Meanwhile, the telescopic end of telescopic part drives the reciprocating movement of adaptation ring along locating shaft, when the pipeline inner diameter is larger, increase the inner cavity volume of auxiliary shell, ensure that outer expansion hole has sufficient water storage to satisfy the softening demand of large-area pipeline inner wall;When the pipeline inner diameter is smaller, the overlapping degree of adaptation ring and auxiliary shell increases, reduce the inner cavity volume, avoid water resource waste, make water spraying dose and pipeline inner wall area match, ensure that in a variety of specifications pipeline can all stable operation.

Description

Technical Field

[0001] This utility model relates to the field of pipeline cleaning technology, specifically a self-cleaning and descaling device for the inner wall of building air conditioning ventilation ducts. Background Technology

[0002] During the long-term operation of building air conditioning and ventilation systems, dust, oil, mold and other dirt can easily accumulate on the inner walls of the ducts. This not only affects ventilation efficiency but may also breed bacteria and harm indoor air quality. Therefore, cleaning and maintenance of the inner walls of the ducts is crucial.

[0003] However, existing cleaning and descaling devices for the inner walls of air conditioning ventilation ducts have several shortcomings: First, they lack adaptability. Most devices are only suitable for ducts of fixed specifications, making it difficult to flexibly adjust for ducts with different inner diameters or those with diameter changes or irregular shapes. If the duct diameter varies, different sizes of cleaning components need to be replaced, making operation cumbersome and limiting applicability. Second, the cleaning effect is unsatisfactory. Traditional devices often use a single scraping structure, lacking a pre-treatment mechanism for stubborn dirt. For hardened oil stains or deep-seated dirt accumulated over a long period, direct scraping not only presents high resistance and easily damages the inner wall of the duct, but also fails to completely remove the dirt. Furthermore, the debris generated during scraping can easily remain inside the duct, causing secondary pollution. Third, the supply of cleaning media is mismatched with the duct specifications. Existing water spray or air jet devices have fixed flow rates and ranges. In large-diameter ducts, insufficient cleaning media can lead to softening or inadequate purging, while in small-diameter ducts, it results in resource waste and an inability to dynamically adjust according to the inner diameter of the duct. These defects make existing devices inefficient and have limited cleaning effects in practical applications, making it difficult to meet the comprehensive cleaning needs of air conditioning ventilation ducts in different building scenarios.

[0004] Therefore, we propose a self-cleaning and descaling device for the inner wall of building air conditioning ventilation ducts to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a self-cleaning and descaling device for the inner wall of building air conditioning ventilation ducts, thereby solving the problems mentioned in the background art.

[0007] Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct, comprising a drive assembly, the drive assembly consisting of a drive device and multiple pulleys, a housing fixedly connected to one side of the drive assembly, a positioning shaft fixedly connected inside the housing, and a telescopic component slidably connected to the outer ring of the end of the positioning shaft away from the housing.

[0009] Preferably, the outer ring of the telescopic component is fixedly connected with an inclined trapezoidal block. The side of the inclined trapezoidal block away from the telescopic component is inclined towards the shell. The inclined surface of the inclined trapezoidal block is set as an I-shaped groove. Three inclined trapezoidal blocks are equidistantly arranged in the axial direction of the telescopic component. The three inclined trapezoidal blocks are arranged in three groups around the center of the telescopic component.

[0010] Preferably, a groove is fixedly connected to the side of the housing away from the drive assembly. Three grooves are equidistantly arranged around the center of the housing. The grooves are vertically arranged, and a slot is opened on the side of the groove away from the housing. A groove block is slidably connected inside the groove.

[0011] Preferably, a shell plate is fixedly connected to the side of the groove block away from the groove body, and a snap-fit ​​body is fixedly connected to the inner wall of the shell plate. The snap-fit ​​body is slidably connected to the inclined surface of the inclined trapezoidal block. The side of the snap-fit ​​body near the inclined trapezoidal block is inclined away from the shell. The snap-fit ​​body is slidably adapted to the inclined trapezoidal block. A scraper is fixedly connected to the side of the shell plate away from the snap-fit ​​body. The scraper is wavy and has multiple scrapers fixed at equal intervals on the shell plate. The shell plate has three sets of scrapers equidistantly arranged around the center of the positioning shaft.

[0012] Preferably, the end of the telescopic member away from the positioning shaft is fixedly connected to an adapter ring, the adapter ring is slidably sleeved on the outer ring of the positioning shaft, and the outer ring of the end of the adapter ring away from the positioning shaft is slidably sleeved with an auxiliary shell, the auxiliary shell is annular, and the inner ring of the auxiliary shell is fixedly connected to an annular drive, the annular drive is annular and sleeved and fixed on the outer ring of the positioning shaft.

[0013] Preferably, a water inlet valve is fixedly connected to the inner cavity of the auxiliary shell, and the water inlet valve is connected to an external water inlet pipe. A water passage groove is formed on the outer ring of the auxiliary shell, and three water passage grooves are formed at equal intervals around the center of the auxiliary shell. Three fan blades are fixedly connected around the outer ring of the auxiliary shell, and the fan blades are positioned corresponding to the water passage grooves. Multiple outward expansion channels are formed on the inner ring of the fan blades, and the outward expansion channels are in an outward expansion arc shape with the auxiliary shell as the center, and the outward expansion channels are connected to the inner cavity of the auxiliary shell.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a self-cleaning and descaling device for the inner wall of building air conditioning ventilation ducts, which has the following beneficial effects:

[0016] Through the telescopic movement of the telescopic component, combined with the inclined trapezoidal block and the inclined surface transmission of the snap-fit ​​body, the shell plate and scraper can be driven to expand or contract synchronously, which can flexibly adapt to pipes with different inner diameters. At the same time, the telescopic end of the telescopic component drives the adapter ring to move back and forth along the positioning axis. When the inner diameter of the pipe is large, the inner cavity volume of the auxiliary shell is increased to ensure that the expanded channel has sufficient water to meet the softening requirements of the large-area pipe inner wall. When the inner diameter of the pipe is small, the overlap between the adapter ring and the auxiliary shell is increased, the inner cavity volume is reduced, water resources are avoided, and the water spray dosage is matched with the inner wall area of ​​the pipe, ensuring stable operation in pipes of various specifications.

[0017] The wavy nitrile rubber scraper can closely conform to the inner wall of the pipe, scraping the softened dirt throughout the entire process of the device's movement. Its own deformation further adapts to the slight curvature differences of the inner wall of the pipe, ensuring a tight fit even in irregularly shaped or slightly deformed pipes. The airflow generated by the rotating fan blades can not only blow away suspended dust in advance, but also promptly carry away debris generated during scraping, preventing such impurities from re-adhering to the inner wall or mixing with dirt during the cleaning process, thus affecting the subsequent scraping effect. Because the outward-expanding channel is an outward-expanding arc centered on the auxiliary shell, under the centrifugal force of the rotating fan blades, the water flow is sprayed radially along the channel to the inner wall of the pipe, forming a water film. For stubborn stains such as long-term accumulated oil and dirt, the water can penetrate and soften them, significantly reducing the adhesion between the dirt and the inner wall. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural diagram of the present invention;

[0020] Figure 3 This is a partial disassembly diagram of the present invention;

[0021] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0022] Figure 5 This is a partial cross-sectional view of the present invention;

[0023] Figure 6 This is a partial disassembly diagram of the present invention.

[0024] In the picture:

[0025] 1. Drive assembly; 2. Housing; 3. Positioning shaft; 4. Telescopic component; 5. Groove; 6. Groove block; 7. Inclined trapezoidal block; 8. Snap-fit ​​body; 9. Shell plate; 10. Scraper; 11. Adaptor ring; 12. Ring drive; 13. Auxiliary shell; 14. Water inlet valve; 15. Water passage groove; 16. Fan blade; 17. Outward expansion channel. Detailed Implementation

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

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0028] Example

[0029] Please refer to Figures 1 to 6 As shown:

[0030] To address the problems mentioned in the technical solutions, this application provides a self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct, including a drive assembly 1. The drive assembly 1 consists of a drive device and multiple pulleys. A housing 2 is fixedly connected to one side of the drive assembly 1. A positioning shaft 3 is fixedly connected inside the housing 2. A telescopic member 4 is slidably connected to the outer ring of the positioning shaft 3 away from the housing 2. The telescopic member 4 consists of a positioning shaft and an extension shaft. The positioning shaft end of the telescopic member 4 is fixedly connected to the outer ring of the positioning shaft 3, and the extension shaft end is slidably sleeved on the outer ring of the positioning shaft 3. During the contraction of the telescopic member 4, the inclined trapezoidal block 7 on its outer ring moves towards the positioning shaft 3. Its inclined surface abuts against the snap-fit ​​body 8. Under the restriction of the shell plate 9 by the groove 5 through the groove block 6, when the inclined trapezoidal block 7 moves towards the positioning shaft 3, it pushes the snap-fit ​​body 8 to move towards the outer ring of the telescopic member 4, thereby driving the shell plate 9 and the groove block 6 to expand horizontally towards the outer ring of the telescopic member 4.

[0031] The outer ring of the telescopic component 4 is fixedly connected with an inclined trapezoidal block 7. The side of the inclined trapezoidal block 7 away from the telescopic component 4 is inclined towards the housing 2. The inclined surface of the inclined trapezoidal block 7 is set as an I-shaped groove. Three inclined trapezoidal blocks 7 are equidistantly arranged in the axial direction of the telescopic component 4. The three inclined trapezoidal blocks 7 are arranged in three sets around the center of the telescopic component 4.

[0032] A groove 5 is fixedly connected to the side of the housing 2 away from the drive component 1. Three grooves 5 are equidistantly arranged around the center of the housing 2. The grooves 5 are vertically arranged. A groove is opened on the side of the groove 5 away from the housing 2. A groove block 6 is slidably connected inside the groove 5. The grooves 5 and groove blocks 6 cooperate to limit the outward expansion and stable movement of the shell plate 9.

[0033] A shell plate 9 is fixedly connected to the side of the trough block 6 away from the trough body 5. A snap-fit ​​body 8 is fixedly connected to the inner wall of the shell plate 9. The snap-fit ​​body 8 is slidably connected to the inclined surface of the inclined trapezoidal block 7. The side of the snap-fit ​​body 8 near the inclined trapezoidal block 7 is inclined away from the shell 2. The snap-fit ​​body 8 and the inclined trapezoidal block 7 are slidably adapted to each other. The inclined trapezoidal block 7 and the snap-fit ​​body 8 cooperate to assist the expansion and contraction of the shell plate 9 and the scraper 10 to adapt to pipes of different diameters. A scraper 10 is fixedly connected to the side of the shell plate 9 away from the snap-fit ​​body 8. The scraper 10 is made of nitrile rubber. The scraper 10 is used to clean the inner wall of the pipe. The scraper 10 is wavy and has multiple scrapers 10 that are fixed at equal intervals on the shell plate 9. The shell plate 9 has three sets of scrapers that are equidistant from the center of the positioning shaft 3.

[0034] An adapter ring 11 is fixedly connected to the end of the telescopic component 4 away from the positioning shaft 3. The adapter ring 11 moves with the telescopic component 4 toward the positioning shaft 3 and away from the auxiliary shell 13, thereby increasing the volume of the inner cavity of the auxiliary shell 13. The adapter ring 11 is slidably sleeved on the outer ring of the positioning shaft 3. The outer ring of the adapter ring 11 away from the positioning shaft 3 is slidably sleeved on the auxiliary shell 13. The auxiliary shell 13 is annular. An annular drive 12 is fixedly connected to the inner ring of the auxiliary shell 13. The annular drive 12 drives the auxiliary shell 13 and the fan blade 16 to rotate. The annular drive 12 is annular and sleeved and fixed on the outer ring of the positioning shaft 3.

[0035] A water inlet valve 14 is fixedly connected to the inner cavity of the auxiliary shell 13. The water inlet valve 14 is connected to an external water inlet pipe. A water passage groove 15 is opened on the outer ring of the auxiliary shell 13. Three water passage grooves 15 are equidistantly arranged around the center of the auxiliary shell 13. Three fan blades 16 are fixedly connected around the outer ring of the auxiliary shell 13. The fan blades 16 are used to rotate and blow away dust in the pipe. The fan blades 16 are positioned corresponding to the water passage grooves 15. Multiple outward expansion channels 17 are opened on the inner ring of the fan blades 16. The outward expansion channels 17 are used to connect the water source. Under the centrifugal force of the rotating fan blades 16, the water adheres to the inner wall of the pipe to soften the dirt. The outward expansion channels 17 are in an outward expansion arc shape with the auxiliary shell 13 as the center. The outward expansion channels 17 are connected to the inner cavity of the auxiliary shell 13.

[0036] Working principle:

[0037] When performing self-cleaning and descaling operations on the inner wall of building air conditioning ventilation ducts, the entire device enters the duct through the power provided by the drive component 1. Its multiple pulleys can assist the device in moving stably along the inner wall of the duct, ensuring that the position does not shift throughout the cleaning operation.

[0038] After the drive assembly 1 is started, it controls the telescopic component 4 to extend and retract according to the inner diameter of the pipe. During the expansion movement, since the positioning shaft end of the telescopic component 4 is fixed to the outer ring of the positioning shaft 3, and the extension shaft end is slidably sleeved on the outer ring of the positioning shaft 3, the contraction process will pull the inclined trapezoidal block 7 of its outer ring to move towards the positioning shaft 3. At this time, the inclined surface of the inclined trapezoidal block 7, which is in the shape of an I-shaped groove, abuts against the snap-fit ​​body 8 fixed to the inner wall of the shell plate 9. The groove body 5 and the groove block 6 that are slidably connected inside will restrict the horizontal movement of the shell plate 9. Under this restriction, the continuous movement of the inclined trapezoidal block 7 will push the snap-fit ​​body 8 to move towards the outer ring of the telescopic component 4, and finally drive the three sets of shell plates 9 and groove blocks 6 arranged around the center of the positioning shaft 3 to expand horizontally in sync until the scraper 10 fixed on the outer side of the shell plate 9 is tightly attached to the inner wall of the pipe. Among them, the scraper 10 is made of nitrile rubber and is wavy, which can adapt to the inner wall curvature of pipes of different diameters, ensuring the fit and cleaning effect during scraping; conversely, it drives the output end of the telescopic component 4 to move away from the positioning shaft 3, thereby reducing the diameter of the shell plate 9.

[0039] Furthermore, the annular drive 12 begins operation. It is fixedly sleeved on the outer ring of the positioning shaft 3, causing the auxiliary housing 13 and the three fan blades 16 fixed around it to rotate synchronously. During the rotation of the fan blades 16, suspended dust inside the pipe is quickly blown away, reducing secondary dust adhesion during cleaning. Simultaneously, external water enters the auxiliary housing 13 through the water inlet valve 14 fixed within its inner cavity, and then flows through the water channel 15 on the outer ring of the auxiliary housing 13 into the multiple outward-expanding channels 17 opened on the inner ring of the fan blades 16. Since the outward-expanding channels 17 are arc-shaped with the auxiliary housing 13 as the center, under the centrifugal force generated by the rotation of the fan blades 16, the water flow is evenly sprayed along the outward-expanding channels 17 and adheres to the inner wall of the pipe, softening stubborn dirt and reducing resistance for subsequent cleaning operations.

[0040] When the telescopic end of the telescopic component 4 drives the adapter ring 11 to reciprocate on the positioning shaft 3, the adapter ring 11 adjusts the depth inside the auxiliary shell 13 during the movement, thereby changing the size of the internal space of the auxiliary shell 13. When the telescopic component 4 moves towards the positioning shaft 3, it drives the adapter ring 11 to move away from the auxiliary shell 13. When the internal volume of the auxiliary shell 13 is increased, the inner diameter of the pipe is too large. By expanding the internal volume of the auxiliary shell 13, it matches the inner diameter of the pipe, avoiding insufficient water storage in the outer expansion channel 17. Conversely, when the pipe diameter decreases, the adapter ring 11 increases the overlap with the auxiliary shell 13, reduces the water storage volume, and matches and adjusts to the inner diameter of the pipe.

[0041] Finally, the drive assembly 1 moves the entire device slowly along the inner wall of the pipe. The scraper 10, which is in contact with the inner wall, scrapes the softened dirt throughout the entire process as the device moves. The dirt debris generated during scraping is carried out of the pipe by the airflow generated by the rotation of the fan blade 16, completing a complete self-cleaning and descaling operation of the inner wall of the pipe. If it is necessary to adjust the cleaning range or adapt to different pipe sections, the expansion range of the shell plate 9 and the scraper 10 can be adjusted by controlling the extension and retraction state of the telescopic component 4 to ensure that the entire pipe is cleaned without any dead corners.

[0042] Through the telescopic movement of the telescopic component 4, combined with the inclined surface transmission of the inclined trapezoidal block 7 and the snap-fit ​​body 8, the shell plate 9 and the scraper 10 can be driven to expand or contract synchronously, which can flexibly adapt to pipes with different inner diameters. At the same time, the telescopic end of the telescopic component 4 drives the adapter ring 11 to move back and forth along the positioning shaft 3. When the inner diameter of the pipe is large, the inner cavity volume of the auxiliary shell 13 is increased to ensure that the outer expansion channel 17 has sufficient water to meet the softening requirements of the inner wall of the large-area pipe. When the inner diameter of the pipe is small, the overlap between the adapter ring 11 and the auxiliary shell 13 increases, the inner cavity volume is reduced, water resources are avoided, the water spray dosage is matched with the inner wall area of ​​the pipe, and stable operation is ensured in pipes of various specifications.

[0043] The wavy nitrile rubber scraper 10 can closely fit the inner wall of the pipe, and scrape the softened dirt throughout the process of the device moving. Its own deformation further adapts to the slight curvature difference of the inner wall of the pipe, ensuring that it can still fit tightly in irregularly shaped or slightly deformed pipes. The airflow generated by the rotation of the fan blade 16 can not only blow away the suspended dust in advance, but also carry away the debris generated by scraping in time, so as to avoid such impurities from being re-adhered to the inner wall or mixed into the dirt during the cleaning process, which would affect the subsequent scraping effect. Since the outward expansion channel 17 is an outward expansion arc centered on the auxiliary shell 13, under the centrifugal force of the rotation of the fan blade 16, the water flow is sprayed radially along the channel to the inner wall of the pipe, forming a water film coverage. For stubborn stains such as oil and dirt that have accumulated over a long period of time, the water can penetrate and soften them, greatly reducing the adhesion between the dirt and the inner wall.

[0044] Please refer to the above work process. Figures 1 to 6 .

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct, comprising a drive assembly (1), characterized in that: The drive assembly (1) consists of a drive device and multiple pulleys. A housing (2) is fixedly connected to one side of the drive assembly (1). A positioning shaft (3) is fixedly connected inside the housing (2). A telescopic component (4) is slidably connected to the outer ring of the positioning shaft (3) away from the housing (2).

2. The self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct according to claim 1, characterized in that: The outer ring of the telescopic component (4) is fixedly connected with an inclined trapezoidal block (7). The side of the inclined trapezoidal block (7) away from the telescopic component (4) is inclined towards the shell (2). The inclined surface of the inclined trapezoidal block (7) is set as an I-shaped groove. Three inclined trapezoidal blocks (7) are equidistantly arranged on the axial direction of the telescopic component (4). The three inclined trapezoidal blocks (7) are arranged in three groups around the center of the telescopic component (4).

3. The self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct according to claim 1, characterized in that: The housing (2) is fixedly connected to a groove (5) on the side away from the drive assembly (1). Three grooves (5) are arranged equidistantly around the center of the housing (2). The grooves (5) are arranged vertically. A groove is opened on the side of the groove (5) away from the housing (2). A groove block (6) is slidably connected inside the groove (5).

4. The self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct according to claim 3, characterized in that: The side of the groove block (6) away from the groove body (5) is fixedly connected to a shell plate (9). The inner wall of the shell plate (9) is fixedly connected to a snap-fit ​​body (8). The snap-fit ​​body (8) is slidably connected to the inclined surface of the inclined trapezoidal block (7). The side of the snap-fit ​​body (8) near the inclined trapezoidal block (7) is inclined away from the shell (2). The snap-fit ​​body (8) is slidably adapted to the inclined trapezoidal block (7). The side of the shell plate (9) away from the snap-fit ​​body (8) is fixedly connected to a scraper (10). The scraper (10) is wavy. The scraper (10) is provided with multiple scrapers fixed at equal intervals on the shell plate (9). The shell plate (9) is provided with three sets of scrapers at equal intervals with the center of the positioning shaft (3) as the axis.

5. A self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct according to claim 4, characterized in that: The telescopic component (4) is fixedly connected to an adapter ring (11) at one end away from the positioning shaft (3). The adapter ring (11) is slidably sleeved on the outer ring of the positioning shaft (3). An auxiliary shell (13) is slidably sleeved on the outer ring of the adapter ring (11) away from the positioning shaft (3). The auxiliary shell (13) is annular. An annular drive (12) is fixedly connected to the inner ring of the auxiliary shell (13). The annular drive (12) is annular and sleeved and fixed on the outer ring of the positioning shaft (3).

6. A self-cleaning and descaling device for the inner wall of a building air conditioning ventilation duct according to claim 5, characterized in that: The auxiliary shell (13) is fixedly connected to a water inlet valve (14), which is connected to an external water inlet pipe. The auxiliary shell (13) has a water channel (15) on its outer ring. The water channel (15) has three channels equidistantly arranged around the center of the auxiliary shell (13). The auxiliary shell (13) has three fan blades (16) fixedly connected around its outer ring. The fan blades (16) are positioned corresponding to the water channel (15). The fan blades (16) have multiple outward expansion channels (17) on their inner ring. The outward expansion channels (17) are arc-shaped with the auxiliary shell (13) as the center. The outward expansion channels (17) are connected to the inner ring of the auxiliary shell (13).

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