Cleaning device
By designing an automated cleaning device to clean the sample inlet pipe of the particulate matter monitor, the problem of impurities affecting data accuracy was solved, achieving efficient cleaning and equipment stability, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DUHUAN TESTING WUHAN CO LTD
- Filing Date
- 2025-02-20
- Publication Date
- 2026-06-02
AI Technical Summary
Impurities adhering to and detaching from the sample inlet pipe of a particulate matter monitor can affect the accuracy of data monitoring. Manual cleaning can also cause pollution and harm to health.
Design a cleaning device including a housing, a rotating shaft, a brush, a telescopic component, and a motor. The motor drives the brush to rotate and clean the sample inlet pipe, and a negative pressure generator is used to remove particles. Combined with a camera to monitor the cleaning effect, automated cleaning is achieved.
It improves the accuracy of data monitoring, reduces the risk of pollution, extends equipment life, lowers maintenance costs, and avoids damage to sensitive electronic components.
Smart Images

Figure CN224309206U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a cleaning device. Background Technology
[0002] Particulate matter monitors are installed in environments such as manufacturing production sites and construction sites to detect the surrounding environment. During the process of the particulate matter monitor absorbing external gas, impurities mixed in with the gas can accumulate and adhere to the sample inlet pipe. Particles attached to the sample inlet pipe may detach during gas absorption and detection, which can affect the accuracy of the monitoring data.
[0003] Currently, during manual cleaning, a large number of particles are shed, causing pollution and potentially affecting human respiration. Utility Model Content
[0004] The main objective of this invention is to provide a cleaning device that can automatically clean the sample inlet pipe of a particulate matter monitor.
[0005] To achieve the above objectives, the cleaning device proposed in this utility model includes: a housing, a rotating shaft, a brush, a telescopic component, and a motor; the housing has a cavity with an opening at one end; the rotating shaft extends in the same direction as the opening and is installed in the cavity, having a connecting portion extending outside the cavity; the brush is disposed around the connecting portion and connected to the connecting portion; the telescopic component is disposed between the brush and the connecting portion, having two ends that are relatively close to or far away from the connecting portion radially, the two ends being fixedly connected to the connecting portion and the brush, respectively; the motor is installed in the cavity and is drivenly connected to the rotating shaft.
[0006] In one embodiment, the telescopic member includes an electric push rod; or,
[0007] The telescopic component includes:
[0008] The first rod extends radially along the connecting part, with one end fixedly connected to the connecting part and the other end provided with a threaded hole;
[0009] The second rod extends radially along the connecting part, with one end inserted into the threaded hole and threadedly connected to the first rod, and the other end fixedly connected to the brush.
[0010] In one embodiment, multiple brushes are arranged at intervals along the circumference of the connecting portion.
[0011] In one embodiment, the cleaning device includes a camera mounted on the connecting portion, located between two adjacent brushes, and oriented away from the connecting portion.
[0012] In one embodiment, the brush extends circumferentially along the axis of rotation.
[0013] In one embodiment, the cleaning device further includes a partition fixedly disposed in the cavity to divide the cavity into a sealed area and an open area adjacent to each other along the opening direction. The open area communicates with the opening. The motor is disposed in the sealed area, and the rotating shaft passes through the partition and is driven by the motor.
[0014] In one embodiment, the housing sidewall is provided with a through hole, and the cleaning device further includes a negative pressure generator, which is disposed on the outside of the housing, corresponding to the through hole, and communicating with the open area.
[0015] In one embodiment, the cleaning device further includes a magnet fixedly disposed on the outer periphery of the housing and located at one end near the opening.
[0016] In one embodiment, the cleaning device further includes a sealing gasket, and the magnet is provided with a mounting groove that opens in the same direction as the cavity, and the sealing gasket is fixedly installed in the mounting groove.
[0017] The technical solution of this utility model achieves the effect of automatically cleaning particles by adjusting the position of the brush with a telescopic component so that the brush abuts against the pipe wall and then starting the motor. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0019] Figure 1 A schematic diagram of the structure of an embodiment of the cleaning device provided by this utility model;
[0020] Figure 2 for Figure 1 A partial structural diagram of the cleaning device.
[0021] Explanation of icon numbers:
[0022] 100. Cleaning device; 1. Housing; 11. Cavity; 111. Sealed area; 112. Open area; 12. Through hole; 2. Rotating shaft; 21. Connecting part; 3. Brush; 4. Telescopic component; 5. Motor; 6. Camera; 8. Partition; 9. Negative pressure generator; 10. Magnet; 20. Sealing gasket.
[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0024] 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 scope of protection of the present utility model.
[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0027] During the process of particulate matter monitors absorbing external gases, impurities mixed in with the gas can accumulate and adhere to the sample inlet pipe. These particles may detach during gas absorption and detection, affecting the accuracy of the monitoring data. Currently, manual cleaning results in a large number of particles detaching, causing pollution and potentially impacting human respiration.
[0028] This utility model proposes a cleaning device.
[0029] Please see Figure 1 and Figure 2In one embodiment of this utility model, the cleaning device 100 includes: a housing 1, a rotating shaft 2, a brush 3, a telescopic member 4, and a motor 5; the housing 1 has a cavity 11 with an opening at one end; the rotating shaft 2 extends in the same direction as the opening and is installed in the cavity 11, and has a connecting portion 21 extending outside the cavity 11; the brush 3 is disposed around the connecting portion 21 and connected to the connecting portion 21; the telescopic member 4 is disposed between the brush 3 and the connecting portion 21, and has two ends that are relatively close to or far away from the connecting portion 21 in the radial direction, the two ends being fixedly connected to the connecting portion 21 and the brush 3 respectively; the motor 5 is installed in the cavity 11 and is drivenly connected to the rotating shaft 2.
[0030] In this invention, a motor 5 is installed in the cavity 11 of the housing 1. The motor 5 is driven by a rotating shaft 2. The part of the rotating shaft 2 located outside the cavity 11 is a connecting part 21. The connecting part 21 is connected to a brush 3 via a telescopic component 4. The rotation radius of the brush 3 can be adjusted through the connecting part 21 to fit the sample inlet pipe of the particulate matter monitor. One side of the housing 1 abuts against one side of the particulate matter monitor. The brush 3 extends into the sample inlet pipe, so that when the motor 5 drives the brush 3 to rotate, it can clean the inner wall of the sample inlet pipe. Because one side of the housing 1 abuts against one side of the particulate matter monitor, the cleaned particles are prevented from drifting outwards, and the side wall of the sample inlet pipe can be cleaned 360 degrees, so that particles no longer adhere to the pipe wall. Its cleaning effect is better than manual cleaning.
[0031] To adjust the position of the brush 3, the telescopic component 4 can be configured as an electric push rod for electric adjustment; or, the telescopic component 4 includes: a first rod and a second rod. The first rod extends radially along the connecting portion 21, with one end fixedly connected to the connecting portion 21 and the other end having a threaded hole. The second rod extends radially along the connecting portion 21, with one end inserted into the threaded hole and threadedly connected to the first rod, and the other end fixedly connected to the brush 3. Manual adjustment is achieved by rotating the second rod.
[0032] To improve cleaning efficiency, multiple brushes 3 are provided at intervals along the circumference of the connecting portion 21.
[0033] To assess the cleanliness of the sample inlet tubing, the cleaning device 100 includes a camera 6 mounted on the connection portion 21, positioned between two adjacent brushes 3, and oriented away from the connection portion 21. This allows the camera to observe the cleanliness of the sample inlet tubing through the gap between the two brushes 3, determining whether to stop cleaning and switch cleaning modes.
[0034] To ensure a closer fit between the brush 3 and the sample inlet pipe, the brush 3 extends circumferentially along the pivot 2. Although the curvature of the brush 3 and the sample inlet pipe may differ, the soft material of the brush 3 allows it to adhere to the inner wall of the sample inlet pipe for cleaning.
[0035] To prevent particles from falling into the cavity 11 and contaminating the working environment of the motor 5, thus extending their service life, the cleaning device 100 also includes a partition 8. The partition 8 is fixedly disposed in the cavity 11 to divide the cavity 11 into a sealed area 111 and an open area 112 adjacent to each other along the opening direction. The open area 112 communicates with the opening. The motor 5 is disposed in the sealed area 111, and the rotating shaft 2 passes through the partition 8 and is driven by the motor 5.
[0036] In the above-described cleaning modes, particles can only be detached from the tube wall, but remain inside the sample inlet pipe. To remove the detached particles, in one embodiment, a through hole 12 is provided on the side wall of the housing 1. The cleaning device 100 also includes a negative pressure generator 9, which is located on the outside of the housing 1, corresponding to the through hole 12, and communicating with the open area 112. The negative pressure generator 9 draws particles into the open area 112 and ultimately into the negative pressure generator 9. A removable filter is provided inside the negative pressure generator 9 to prevent particles from clogging the pipes of the negative pressure generator 9 and to facilitate cleaning of the negative pressure generator 9.
[0037] To facilitate the installation of the cleaning device 100, the cleaning device 100 further includes a magnet 10, which is fixedly disposed on the outer periphery of the housing 1 and located at one end near the opening. The magnet 10 allows for easy attachment and disassembly of the device to the particulate matter monitor.
[0038] Furthermore, to prevent the cleaned particles from escaping through the gap between the cleaning device 100 and the particulate matter monitor, the cleaning device 100 also includes a sealing gasket 20. The magnet 10 is provided with a mounting groove that opens in the same direction as the cavity 11, and the sealing gasket 20 is fixedly installed in the mounting groove. The sealing gasket 20 also ensures the sealing between the negative pressure generator 9 and the sample inlet pipe.
[0039] The cleaning device 100 reduces the risk of malfunctions caused by contamination, extends equipment lifespan, and ensures overall stability. Through an effective dust removal mechanism, it avoids damage to sensitive electronic components, reduces maintenance costs, keeps equipment in good condition, decreases the probability of malfunctions, and consequently reduces the frequency and cost of repairs.
[0040] The cleaning device 100 of this application may further include: a mounting frame, a cylinder, and a controller. The mounting frame is used to connect to the housing of the particulate matter monitor. The cylinder is fixedly mounted on the mounting frame and coaxially arranged with the sample inlet pipe of the particulate matter monitor. The end of the cylinder is connected to the housing. When the cylinder extends, the brush 3 is inserted into the sample inlet pipe of the particulate matter monitor (the magnet attracts the housing of the particulate matter monitor, playing an auxiliary fixing role). At this time, the sample inlet pipe can be cleaned. In addition, when the cylinder is retracted, the particulate matter monitor can work normally. Therefore, the controller can control the cylinder to extend at regular intervals and then drive the brush 3 to clean, realizing timed cleaning, and can be completely independent of manual operation. Regarding the cleaning effect, the brush 3 can be driven to rotate to sweep off the particles in the sample inlet pipe. After rotation and cleaning, the camera 6 scans to judge the cleanliness of the sample inlet pipe. If the standard is met, further cleaning stops and the cylinder is retracted; if the standard is not met, the steps of rotating the brush 3 to clean and detect are repeated. Among them, the negative pressure generator 9 is always in the open state during the cleaning process, which can promptly clean up the detached particles and prevent the detached particles from adhering to the sample inlet pipe again.
[0041] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A cleaning device, characterized in that, include: The housing has a cavity with an opening at one end; A rotating shaft extends in the same direction as the opening, is installed in the cavity, and has a connecting portion extending outside the cavity; A brush is disposed around the connecting part and connected to the connecting part; An extension member is disposed between the brush and the connecting part, having two ends that are relatively close to or far away from each other along the radial direction of the connecting part, and the two ends are respectively fixedly connected to the connecting part and the brush; The motor is installed in the cavity and is driven by the rotating shaft.
2. The cleaning device as claimed in claim 1, characterized in that, The telescopic component includes an electric push rod; or, The telescopic component includes: The first rod extends radially along the connecting part, with one end fixedly connected to the connecting part and the other end provided with a threaded hole; The second rod extends radially along the connecting part, with one end inserted into the threaded hole and threadedly connected to the first rod, and the other end fixedly connected to the brush.
3. The cleaning device as described in claim 1, characterized in that, The brushes are arranged in multiple circumferentially along the connecting portion.
4. The cleaning device as described in claim 3, characterized in that, The cleaning device includes a camera, which is mounted on the connecting part, located between two adjacent brushes, and oriented away from the connecting part.
5. The cleaning device as described in claim 3, characterized in that, The brush extends circumferentially along the axis of rotation.
6. The cleaning device as claimed in claim 2, characterized in that, The cleaning device further includes a partition plate, which is fixedly disposed in the cavity to divide the cavity into a sealed area and an open area adjacent to each other along the opening direction. The open area communicates with the opening. The motor is disposed in the sealed area, and the rotating shaft passes through the partition plate and is driven by the motor.
7. The cleaning device as claimed in claim 6, characterized in that, The housing sidewall is provided with a through hole, and the cleaning device also includes a negative pressure generator, which is located on the outside of the housing, corresponding to the through hole, and communicating with the open area.
8. The cleaning device as claimed in claim 1, characterized in that, The cleaning device also includes a magnet, which is fixedly disposed on the outer periphery of the housing and located at one end near the opening.
9. The cleaning device as claimed in claim 8, characterized in that, The cleaning device also includes a sealing gasket, and the magnet is provided with a mounting groove that opens in the same direction as the cavity, and the sealing gasket is fixedly installed in the mounting groove.