Air flow sensor with self-cleaning dust removal

Abstract

The utility model discloses a self -cleaning dust removal's airflow sensor, including mounting seat and monitoring subassembly, monitoring subassembly installs on mounting seat, the inside installation of mounting seat has airflow sensor self -cleaning device, the bottom of mounting seat one side is provided with the discharge slot, install foreign matter collection subassembly in the discharge slot. The utility model discloses through installing airflow sensor self -cleaning device, when the airflow flows and drives the impeller rotation, makes the scraper of all around and mounting seat inner wall rotation contact, can scrape the dust foreign matter on the mounting seat inner wall with the adhesion, falls in the mounting seat bottom due to gravity foreign matter, and the outlet pipe and nozzle of the inclination setting blow the foreign matter into the collection frame, and the outlet pipe and nozzle of setting in the circumferential direction further carry out the cleaning to the dust foreign matter of mounting seat inner wall adhesion, improve the detection accuracy of sensor, and the connecting frame and collection frame of setting adopt the detachable installation mode, and further convenient to pour the dust foreign matter of collection.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, specifically to a self-cleaning and dust-removing airflow sensor. Background Technology

[0002] An airflow sensor is a device used to detect and measure the speed and volume of airflow. It can monitor and measure the velocity and flow rate of gas (usually air) in equipment such as pipes, ventilation systems, and engines, and convert it into electrical signals for analysis and control. Existing airflow sensors are prone to dust accumulation in polluted environments, leading to a decrease in measurement accuracy. Traditional cleaning methods require downtime for manual maintenance, affecting the continuity of equipment operation.

[0003] The prior art, disclosed in patent document CN216297360U, presents the following technical solution: a self-cleaning device for a contact-type photoelectric sensor, comprising a sleeve fixed to the photoelectric sensor, the sleeve protruding outward from the side of the lens of the photoelectric sensor, an annular cavity inside the sleeve, the annular cavity being sealed at both ends, a plurality of cleaning nozzles being annularly distributed on the inner side of the sleeve, one end of the cleaning nozzles being connected to the annular cavity, and the other end being located on the front side of the lens for blowing air onto the lens, and an air pipe interface being provided on the outer side of the sleeve, one end of the air pipe interface being connected to the annular cavity, and the other end being connected to an air pipe connector for inputting compressed air.

[0004] The above-mentioned technical solution blows off the dust and foreign objects adsorbed on the photoelectric sensor through the cleaning nozzle, but it can only clean a certain position on the inner wall of the sensor, which limits the cleaning process. Utility Model Content

[0005] The purpose of this invention is to provide a self-cleaning and dust-removing airflow sensor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning and dust-removing airflow sensor, comprising a mounting base and a monitoring component, wherein the monitoring component is mounted on the mounting base, the mounting base is provided with connecting flanges at both ends, the mounting base is provided with an airflow sensor self-cleaning device, and a discharge trough is provided at the bottom of one side of the mounting base, wherein a foreign matter collection component is installed in the discharge trough.

[0007] The airflow sensor self-cleaning device includes rotating rings symmetrically arranged at both ends of the mounting base. A connecting bracket is fixedly connected between the two rotating rings. An impeller is installed on one side of the connecting bracket. A scraper is fixedly connected in the circumferential direction between the two rotating rings. The scraper is in contact with the inner wall of the mounting base on the side closest to the inner wall. An annular air collection chamber is installed around one end of the outer side of the mounting base. Air outlet pipes are arranged at the bottom of the annular air collection chamber, and each air outlet pipe has a nozzle at its water outlet end.

[0008] In the above technical solution, when the airflow passes through, it drives the impeller to rotate, causing the scrapers around the perimeter to rotate and contact the inner wall of the mounting base, which can scrape off the dust and foreign objects adhering to the inner wall of the mounting base. Due to gravity, the foreign objects fall to the bottom of the mounting base, and the inclined air outlet pipe and nozzle blow the foreign objects into the collection frame.

[0009] The foreign object collection assembly includes a connecting frame and a collection frame. The connecting frame is disposed on the inner wall of the feeding trough and extends downward to below the mounting base. Both ends of the connecting frame are provided with T-shaped grooves, and both ends of the collection frame are provided with T-shaped grooves. I-shaped plates are inserted between the T-shaped grooves.

[0010] In the above technical solution, the connecting frame and the collection frame are installed in a detachable manner, which makes it easy to disassemble the collection frame and thus convenient to empty the collected dust and foreign objects.

[0011] As a further preferred embodiment of this technical solution, both ends of the inner wall of the mounting base are provided with annular limiting grooves, and the outer wall of the rotating ring is rotatably connected to the inner wall of the annular limiting groove.

[0012] As a further preferred embodiment of this technical solution, a mounting groove is provided at one edge of the mounting base, and a filter screen is installed in the mounting groove by screws. The filter screen is located at the air inlet end of the airflow sensor.

[0013] In the above technical solution, the filter screen can reduce the entry of foreign objects into the mounting base, thereby reducing the adhesion of foreign objects to the inner wall of the mounting base.

[0014] As a further preferred embodiment of this technical solution, an air inlet is provided at the upper end of the annular gas collecting chamber, and the air inlet is connected to an external air source through a connector.

[0015] As a further preferred embodiment of this technical solution, the air outlet pipe and the nozzle are inclined, and the axis of the nozzle hole forms a 45° angle with the inner wall of the mounting base, so that the airflow is sprayed toward the inner wall of the mounting base.

[0016] As a further preferred embodiment of this technical solution, a sealing sleeve is provided on the outer side of each I-shaped plate, and the sealing sleeve contacts the inner wall of T-groove 1 and T-groove 2. A sealing gasket is provided in the grooves at both ends of the collection frame, and the sealing gasket contacts both ends of the bottom side of the connecting frame.

[0017] In the above technical solution, the sealing sleeve and sealing gasket ensure a seal between the connecting frame and the collecting frame, reducing gas leakage.

[0018] As a further preferred embodiment of this technical solution, both the sealing sleeve and the sealing gasket are made of silicone rubber.

[0019] This invention provides a self-cleaning and dust-removing airflow sensor, which has the following beneficial effects:

[0020] (1) This utility model uses a self-cleaning device for an airflow sensor. When the airflow passes through, it drives the impeller to rotate, causing the scrapers around the perimeter to rotate and contact the inner wall of the mounting base. This scrapes off the dust and foreign objects adhering to the inner wall of the mounting base. Due to gravity, the foreign objects fall to the bottom of the mounting base. The inclined air outlet pipe and nozzle blow the foreign objects into the collection frame. Furthermore, the air outlet pipe and nozzle arranged in the circumferential direction further clean the dust and foreign objects adhering to the inner wall of the mounting base, thereby improving the detection accuracy of the sensor.

[0021] (2) The connecting frame and the collection frame of this utility model are installed in a detachable manner, which makes it easy to disassemble the collection frame and thus easy to pour out the collected dust and foreign objects. The sealing sleeve and sealing gasket make the connecting frame and the collection frame airtight, reducing the leakage of gas flowing through. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the self-cleaning device for the airflow sensor of this utility model;

[0025] Figure 4 This is an enlarged view of Figure A of this utility model;

[0026] In the diagram: 1. Mounting base; 2. Monitoring component; 3. Connecting flange; 4. Airflow sensor self-cleaning device; 41. Rotating ring; 42. Connecting bracket; 43. Impeller; 44. Scraper; 45. Annular air collection chamber; 451. Air inlet; 46. Air outlet pipe; 47. Nozzle; 5. Foreign matter collection component; 51. Connecting frame; 511. T-slot one; 52. Collection frame; 521. T-slot two; 522. Sealing gasket; 53. I-shaped plate; 531. Sealing sleeve; 11. Annular limiting groove; 12. Mounting groove; 13. Filter screen; 14. Discharge chute. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] This utility model provides a technical solution as follows: Figure 1As shown in this embodiment, a self-cleaning and dust-removing airflow sensor includes a mounting base 1 and a monitoring component 2. The monitoring component 2 is mounted on the mounting base 1. The mounting base 1 has connecting flanges 3 at both ends. An airflow sensor self-cleaning device 4 is installed inside the mounting base 1. A discharge trough 14 is opened at the bottom of one side of the mounting base 1. A foreign matter collection component 5 is installed in the discharge trough 14. An installation groove 12 is opened at one edge of the mounting base 1. A filter screen 13 is installed in the installation groove 12 by screws. The filter screen 13 is located at the air inlet end of the airflow sensor. The filter screen 13 can reduce the entry of foreign matter into the mounting base 1, thereby reducing the adhesion of foreign matter to the inner wall of the mounting base 1.

[0029] like Figure 2 and Figure 3 As shown, the airflow sensor self-cleaning device 4 includes a rotating ring 41. Both ends of the inner wall of the mounting base 1 are provided with annular limiting grooves 11. The outer wall of the rotating ring 41 is rotatably connected to the inner wall of the annular limiting grooves 11. The rotating rings 41 are symmetrically arranged at both ends of the mounting base 1. A connecting bracket 42 is fixedly connected between the two rotating rings 41. An impeller 43 is installed on one side of the connecting bracket 42. A scraper 44 is fixedly connected in the circumferential direction between the two rotating rings 41. The side of the scraper 44 closest to the inner wall of the mounting base 1 contacts the inner wall of the mounting base 1. An annular air collecting chamber 45 is installed around one end of the outer side of the mounting base 1. An air inlet 451 is provided at the upper end of the annular air collecting chamber 45. The air inlet 451 is connected to an external air source through a connector. The bottom of the annular air collecting chamber 45 is located at the circumference of the bottom. An air outlet pipe 46 is arranged, and each of the water outlet ends of the air outlet pipe 46 is equipped with a nozzle 47. The air outlet pipe 46 and the nozzle 47 are inclined, and the axis of the nozzle is at a 45° angle to the inner wall of the mounting base 1, so that the airflow is sprayed toward the inner wall of the mounting base 1. By installing the airflow sensor self-cleaning device 4, when the airflow flows through, it drives the impeller 43 to rotate, so that the scrapers 44 around the perimeter come into contact with the inner wall of the mounting base 1, which can scrape off the dust and foreign objects adhering to the inner wall of the mounting base 1. Due to gravity, the foreign objects fall to the bottom of the mounting base 1, and the inclined air outlet pipe 46 and the nozzle 47 blow the foreign objects into the collection frame 52. Furthermore, the air outlet pipe 46 and the nozzle 47 arranged in the circumferential direction further clean the dust and foreign objects adhering to the inner wall of the mounting base 1, thereby improving the detection accuracy of the sensor.

[0030] like Figure 3 and Figure 4As shown, the foreign object collection assembly 5 includes a connecting frame 51 and a collection frame 52. The connecting frame 51 is disposed on the inner wall of the discharge trough 14 and extends downward to below the mounting base 1. T-shaped grooves 511 are provided at both ends of the connecting frame 51, and T-shaped grooves 521 are provided at both ends of the collection frame 52. I-shaped plates 53 are inserted between the T-shaped grooves 511 and 521. Sealing sleeves 531 are fitted onto the outer sides of the I-shaped plates 53, and the sealing sleeves 531 contact the inner walls of the T-shaped grooves 511 and 521, collecting the foreign object. Sealing gaskets 522 are provided in the grooves at both ends of the frame 52. The sealing gaskets 522 are in contact with the front and rear ends of the bottom side of the connecting frame 51. Both the sealing sleeve 531 and the sealing gasket 522 are made of silicone rubber. The connecting frame 51 and the collection frame 52 are installed in a detachable manner, which makes it easy to disassemble the collection frame 52 and thus easy to pour out the collected dust and foreign objects. The sealing sleeve 531 and the sealing gasket 522 make the connecting frame 51 and the collection frame 52 airtight, reducing the leakage of flowing gas.

[0031] This utility model provides a self-cleaning dust removal airflow sensor. The specific working principle is as follows: The airflow sensor is connected to the pipeline through the connecting flanges 3 on both sides. The airflow first passes through the filter screen 13 to reduce the entry of foreign objects into the mounting base 1. The flow of air causes the impeller 43 to rotate, which drives the rotating ring 41 and the connecting bracket 42 to rotate. This causes the scraper 44 to rotate along the inner wall of the mounting base 1, scraping off the adhering dust. Some of the dust falls to the bottom of the mounting base 1 due to gravity. The air inlet 451 is connected to an external air source (air compressor or air pump), so that the gas is sprayed from the inclined nozzle 47 onto the inner wall of the mounting base 1, further blowing off the adhering dust. The dust accumulated at the bottom is blown into the collection frame 52. The connecting frame 51 and the collection frame 52 can be disassembled to empty the collected dust and foreign objects.

[0032] 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 dust removal airflow sensor, comprising a mounting base (1) and a monitoring component (2), characterized in that: The monitoring component (2) is installed on the mounting base (1). The mounting base (1) has connecting flanges (3) at both ends. The mounting base (1) is equipped with an airflow sensor self-cleaning device (4). The mounting base (1) has a discharge trough (14) at the bottom of one side. The discharge trough (14) is equipped with a foreign object collection component (5). The airflow sensor self-cleaning device (4) includes a rotating ring (41), which is symmetrically arranged at both ends of the mounting base (1). A connecting bracket (42) is fixedly connected between the two rotating rings (41). An impeller (43) is installed on one side of the connecting bracket (42). A scraper (44) is fixedly connected in the circumferential direction between the two rotating rings (41). The scraper (44) is in contact with the inner wall of the mounting base (1) on the side close to the inner wall. An annular air collection chamber (45) is installed around one end of the outer side of the mounting base (1). An air outlet pipe (46) is arranged at the bottom of the annular air collection chamber (45). A nozzle (47) is provided at the water outlet end of each air outlet pipe (46). The foreign object collection component (5) includes a connecting frame (51) and a collection frame (52). The connecting frame (51) is set on the inner wall of the feeding trough (14) and extends downward to the bottom of the mounting base (1). T-shaped grooves (511) are provided at both ends of the connecting frame (51), and T-shaped grooves (521) are provided at both ends of the collection frame (52). I-shaped plates (53) are inserted between T-shaped grooves (511) and T-shaped grooves (521).

2. The self-cleaning dust removal airflow sensor according to claim 1, characterized in that: Both ends of the inner wall of the mounting base (1) are provided with annular limiting grooves (11), and the outer wall of the rotating ring (41) is rotatably connected to the inner wall of the annular limiting groove (11).

3. The self-cleaning dust removal airflow sensor according to claim 1, characterized in that: The mounting base (1) has a mounting groove (12) at one edge, and a filter screen (13) is installed in the mounting groove (12) by screws. The filter screen (13) is located at the air inlet end of the airflow sensor.

4. The self-cleaning dust removal airflow sensor according to claim 1, characterized in that: The annular gas collecting chamber (45) has an air inlet (451) at its upper end, and the air inlet (451) is connected to an external air source through a connector.

5. The self-cleaning dust removal airflow sensor according to claim 1, characterized in that: The air outlet pipe (46) and the nozzle (47) are inclined, and the axis of the nozzle is at a 45° angle with the inner wall of the mounting base (1), so that the airflow is sprayed toward the inner wall of the mounting base (1).

6. The self-cleaning dust removal airflow sensor according to claim 1, characterized in that: The outer side of the I-shaped plate (53) is fitted with a sealing sleeve (531), which contacts the inner wall of T-shaped groove one (511) and T-shaped groove two (521). The front and rear ends of the collection frame (52) are provided with sealing gaskets (522), which contact the front and rear ends of the bottom side of the connecting frame (51).

7. The self-cleaning dust removal airflow sensor according to claim 6, characterized in that: Both the sealing sleeve (531) and the sealing gasket (522) are made of silicone rubber.

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