Perceptual sensor for filter screen blockage detection

Abstract

The utility model provides a perceptual sensor for filter screen blockage detection, which is used for detecting whether a filter screen is blocked or not based on a photoelectric reflection principle and realizing pollution isolation of a light emitter and a light receiver through a slidable light-transmitting protection plate. A locking structure and an unlocking assembly are arranged between the protection plate and the sensor body, the unlocking assembly is composed of a reset spring, a connecting rod and an extrusion head, and rapid unlocking can be achieved through pressing. The inner and outer sliding rails are guided and matched with the limiting blocks and the pins, the drawing stroke is accurate, positioning is reliable, and the whole machine is convenient to fix, reform and install through the installation holes. When the structure is maintained, the window can be cleaned or replaced synchronously without disassembling, the downtime is shortened, the maintenance cost is reduced, the long-term stability and the detection accuracy are improved, and the structure is suitable for online monitoring of the filter screen state of an air duct system such as a ventilation air conditioner.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter screen block perception technical field especially relates to a kind of for filter screen block detection perception sensor. BACKGROUND

[0002] In the air duct system of ventilation air conditioning etc., filter screen will intercept a large amount of dust after long-term use, cause filter screen blockage, and then make air duct resistance rise, affect ventilation effect and system energy consumption. In order to ensure the normal operation and efficiency of system, filter screen needs to be cleaned or replaced regularly. In order to accurately judge the blockage state of filter screen, filter screen state detection device is usually used on site. Among them, photoelectric reflection type detection device is widely used due to its advantages such as no need to press difference tube, small installation transformation, etc.

[0003] However, the existing photoelectric detection device has some problems in actual application. The photoelectric device usually arranges the light emitter and the light receiver on one side of the filter screen, and judges the filter screen blockage by detecting the change of the reflected light on the filter surface. However, in the environment with dust, moisture or oil mist in the air duct, dust, water film or oil film is easy to accumulate in the opening and optical cavity at the front end of the sensor, which causes the change of echo intensity and angle distribution, resulting in measurement drift, false alarm or late report, and seriously affects the accuracy and reliability of detection.

[0004] In addition, filter screen itself needs to be maintained periodically, but the window cleaning and replacement operation of the existing device is often out of sync with filter screen maintenance. Once dust enters and affects the light emitter, the whole device needs to be disassembled and cleaned, which is very inconvenient to operate. After disassembling and cleaning the filter screen, the on-site personnel also need to disassemble and assemble the sensor window, which causes the process to be fragmented and reduces the maintenance efficiency. Although some products provide replaceable window pieces, they lack reliable quick locking and limiting structure, and loose plug-in or positioning drift will also affect the measurement stability. In view of the above problems, the existing technology needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of perception sensors for filter screen block detection, to solve the technical problems that the existing photoelectric detection device is easy to be contaminated in dust, humid or with oil mist environment, resulting in measurement drift, false alarm or late report, and maintenance operation is not convenient, window cleaning and replacement operation are out of sync with filter screen maintenance.

[0006] The technical scheme of the utility model is as follows: a kind of perception sensor for filter screen block detection, comprising: sensor body, the sensor body is equipped with light emitter and light receiver;

[0007] Light-transmitting protection plate, the light-transmitting protection plate is equipped with the buckle that cooperates with the card slot;

[0008] A sliding assembly is connected to the sensor body and the light-transmitting protection plate to enable the light-transmitting protection plate to slide relative to the sensor body to shield the light-emitting device and the light-receiving device.

[0009] An unlocking assembly is arranged on the sensor body.

[0010] When the light-transmitting protection plate slides to a preset working position, the buckle is engaged with the clamping groove to lock the light-transmitting protection plate.

[0011] The unlocking assembly is used to release the engagement between the buckle and the clamping groove.

[0012] By the technical solution, the sliding and locking of the light-transmitting protection plate can be realized, and the sensor opening can be effectively protected from pollution.

[0013] Further, according to the sensing sensor for filter screen blockage detection, the unlocking assembly includes a reset spring, a connecting rod, and a pressing head; the pressing head is in abutment with the buckle, the connecting rod is connected to the pressing head, and the reset spring is used to drive the connecting rod to reset.

[0014] By the technical solution, reliable unlocking of the buckle can be realized, and the light-transmitting protection plate can be smoothly slid to facilitate operation.

[0015] Further, according to the sensing sensor for filter screen blockage detection, the sliding assembly includes an inner sliding rail and an outer sliding rail; the inner sliding rail is connected to the light-transmitting protection plate, the outer sliding rail is connected to the sensor body, and the inner sliding rail is slidably arranged in the outer sliding rail.

[0016] By the technical solution, a stable sliding mechanism can be provided to ensure smooth sliding and accurate positioning of the light-transmitting protection plate.

[0017] More specifically, in some embodiments, according to the sensing sensor for filter screen blockage detection, the sliding assembly further includes a limiting block arranged on the inner sliding rail and a pin arranged on the outer sliding rail; when the inner sliding rail slides, the limiting block is in abutment with the pin to limit the sliding stroke of the inner sliding rail.

[0018] By the technical solution, the sliding range of the light-transmitting protection plate can be accurately controlled to prevent excessive sliding or falling off and ensure its accuracy at the preset working position.

[0019] Preferably, according to the sensing sensor for filter screen blockage detection, the buckle is an elastic hook; and the pressing head is used to press the elastic hook to make it disengage from the clamping groove.

[0020] By the technical solution, a simple and effective locking and unlocking mechanism can be provided, and the design of the elastic hook makes the operation more convenient.

[0021] Preferably, according to the sensing sensor for filter screen blockage detection, the reset spring is sleeved on the connecting rod.

[0022] Through the technical scheme, the installation of the reset spring is more compact and stable, and the reliability of the unlocking assembly is improved.

[0023] Preferably, according to the sensing sensor for filter screen blockage detection, the outer sliding rail is provided with a mounting hole for fixing the outer sliding rail to the sensor body.

[0024] Through the technical scheme, the sliding assembly can be conveniently fixed to the sensor body, and the installation process is simplified.

[0025] Preferably, according to the sensing sensor for filter screen blockage detection, the unlocking assembly is arranged at the top of the sensor body.

[0026] Through the technical scheme, it is convenient for maintenance personnel to operate.

[0027] Preferably, according to the sensing sensor for filter screen blockage detection, the sliding assembly is arranged at the bottom of the sensor body.

[0028] Through the technical scheme, the installation position of the sliding assembly is more reasonable, and other functional components of the sensor body are not affected.

[0029] The utility model discloses a sensing sensor for filter screen blockage detection, through setting up sliding assembly connection sensor body and light -transmitting protection board, make light -transmitting protection board can slide relative to sensor body, when light -transmitting protection board slides to the preset working position, buckle and card slot are engaged to lock light -transmitting protection board, and unlocking assembly is used for relieving the engagement state of buckle and card slot. The technical scheme effectively solves the problems that the front end opening of the sensor and the optical cavity of the existing photoelectric detection device are easy to accumulate dust, form water film or oil film in the dust-containing, humid or oil mist environment of the air duct, resulting in measurement drift, false alarm or late report. Through the sliding and locking of the light-transmitting protection plate, the optical elements of the sensor can be effectively protected in the non-working state, avoiding environmental pollution, thereby significantly improving the accuracy and reliability of detection. Maintenance personnel do not need to disassemble the whole device, but only need to unlock the assembly to unlock the state, slide the light-transmitting protection plate to clean or replace the sensor opening, greatly simplify the maintenance process, improve the maintenance efficiency, avoid the process fragmentation, so that the on-site personnel can conveniently maintain the sensor window after disassembling and washing the filter screen, thereby ensuring the normal operation and efficiency of the system. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a kind of sensing sensor for filter screen blockage detection overall structure schematic view.

[0031] Figure 2 It is a schematic diagram of a sensing sensor sliding assembly structure for filter screen blockage detection.

[0032] Figure 3 It is Figure 2 It is a schematic diagram of a sensing sensor in area A for filter screen blockage detection.

[0033] Figure 4 It is a schematic diagram of a sensing sensor top section structure for filter screen blockage detection.

[0034] Figure 5 It is a schematic diagram of a sensing sensor in a light-transmitting protective plate locked state for filter screen blockage detection.

[0035] Reference Signs:

[0036] 1, sensor; 11, light emitter; 12, light receiver; 2, light-transmitting protective plate; 21, buckle;

[0037] 3, sliding assembly; 31, inner slide rail; 32, outer slide rail; 33, pin; 34, limit block; 35, mounting hole; 4, unlocking device; 41, return spring; 42, connecting rod; 43, extrusion head. DETAILED DESCRIPTION

[0038] The technical solutions in the application will be described in detail below with reference to the accompanying drawings in the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. The components of the application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0039] Referring to Figure 1 The embodiment discloses a sensing sensor for filter screen blockage detection, which aims to solve the problems of existing filter screen state detection devices in dusty, humid or oily environments, such as easy dust accumulation, water film or oil film on the front opening and optical cavity, resulting in changes in echo intensity and angle distribution, drift, false alarm or late report, and inconvenient window cleaning and replacement, fragmented process and affected efficiency.

[0040] The filter screen in the existing air duct system of traditional ventilation and air conditioning, etc. will cause the resistance to rise due to long-term interception of dust, and needs to be cleaned or replaced regularly. In order to reduce errors, the filter screen state detection device is often used in the field, and the photoelectric reflection type structure is widely used because it does not need to press the difference tube and the installation is small. However, this photoelectric device usually arranges the light emitter and the light receiver on one side of the filter screen, and works by judging the change of the reflection of the filter surface. But in the environment of dust, moisture or oil mist in the air duct, the front opening and the optical cavity are easy to accumulate dust, hang water film or oil film, which changes the intensity and angle distribution of the echo, resulting in drift, false alarm or late report. In addition, the filter screen itself needs to be maintained periodically, but the window cleaning and replacement of the existing device are often not in the same rhythm. Once the dust affects the light, the whole device needs to be disassembled for cleaning, which is very inconvenient. The field personnel have disassembled and washed the filter screen, but they still need to disassemble and assemble the sensor window again, which is fragmented and affects the efficiency. Although some products can replace the window piece, they lack reliable and quick locking and limiting structures, and the plug-in is loose or the positioning drift will also affect the measurement stability.

[0041] To this end, the application provides a sensing sensor for filter screen clogging detection, which comprises a sensor body 1, a light-transmitting protection plate 2, a sliding assembly 3 and an unlocking assembly 4. The sensor body 1 is provided with a transmitting opening, a receiving opening and a clamping groove. The light-transmitting protection plate 2 is provided with a clasp 21 matched with the clamping groove. The sliding assembly 3 connects the sensor body 1 and the light-transmitting protection plate 2, so that the light-transmitting protection plate 2 can slide relative to the sensor body 1, thereby shielding the light emitter 11 and the light receiver 12. The unlocking assembly 4 is arranged on the sensor body 1. When the light-transmitting protection plate 2 slides to a preset working position, the clasp 21 is clamped with the clamping groove to lock the light-transmitting protection plate 2. The unlocking assembly 4 is used to release the clamping state of the clasp 21 and the clamping groove. Through this structure, the sensing sensor of the application can realize the quick pulling and locking of the light-transmitting protection plate 2, thereby quickly restoring the window cleaning state without changing the optical path geometry, improving the anti-interference, maintainability and long-term reliability, and making the filter screen clogging detection more accurate and easier to use.

[0042] The sensing sensor in this embodiment is mainly used to detect the blockage of the filter, and its core lies in utilizing the photoelectric reflection principle. The sensor body 1 is the main structure of the entire device, integrating optical elements such as the emitter 11 and the receiver 12 for emitting and receiving light signals. The emission opening and the reception opening are the channels for light signals to enter and exit, and their positions and sizes are precisely designed to ensure the stability of the light path. The slot is a structure on the sensor body 1 that engages with the latch 21 on the light-transmitting protective plate 2 to lock the light-transmitting protective plate 2. The light-transmitting protective plate 2 is usually made of transparent material, such as glass or high-transmittance plastic, and its function is to isolate dust, moisture or oil film in the external environment, protect the internal optical elements from contamination, and allow light signals to pass through. The latch 21 is an elastic structure on the light-transmitting protective plate 2, used to engage with the slot to position and lock the light-transmitting protective plate 2. The sliding component 3 is a mechanical structure connecting the sensor body 1 and the light-transmitting protective plate 2, and its function is to provide linear guidance so that the light-transmitting protective plate 2 can slide smoothly relative to the sensor body 1. The unlocking component 4 is an operating mechanism located on the sensor body 1. It is used to release the latch 21 from the slot when the light-transmitting protective plate 2 needs to be cleaned or replaced, thereby allowing the light-transmitting protective plate 2 to slide.

[0043] Specifically, the sensor body 1 can be made of various materials and structures, such as metal, engineering plastics, or composite materials, to meet different environmental requirements and strength needs. The transmitting and receiving openings can be designed as circular, square, or other geometric shapes, and optical lenses or collimators can be installed inside to optimize the emission and reception of the light beam. The slot can be designed as a groove, hole, or protrusion structure, as long as it can reliably engage with the latch 21. As a preferred embodiment, the light-transmitting protective plate 2 can be made of high-strength, high-transmittance quartz glass or polycarbonate material to ensure long-term stability and optical performance. The latch 21 can be designed as a flexible hook, flexible pin, or flexible sheet, and its material should have good elasticity and fatigue resistance to ensure reliability after multiple operations. The sliding component 3 can be in various forms such as linear guides, grooves, or ball bearing slides, and its design should ensure smooth sliding of the light-transmitting protective plate 2 with low resistance, and sufficient accuracy and stability. The unlocking component 4 can be designed with various operating methods such as pressing, rotating, or lever-type, and its structure should be simple, reliable, and easy to operate. For example, the unlocking component 4 can be a simple press button. When the button is pressed, the internal mechanism pushes the latch 21 out of the slot, thereby unlocking the device.

[0044] In practical applications, the working process of the sensing sensor in this embodiment is as follows: When the sensor body 1 is installed near the filter and begins to work, the internal light emitter 11 emits light signals to the filter surface through the emission opening, and the light receiver 12 receives the light signals reflected back from the filter surface through the receiving opening. Under normal working conditions, the light-transmitting protective plate 2 slides to a preset working position. At this time, the latch 21 engages with the slot, firmly locking the light-transmitting protective plate 2 onto the sensor body 1, thereby effectively isolating dust, moisture, or oil films from the external environment, protecting the internal optical components from contamination, ensuring optical path stability, and maintaining measurement accuracy over a long period. When it is necessary to clean or replace the light-transmitting protective plate 2, the operator only needs to operate the unlocking component 4 to release the latch 21 from the slot. Once unlocked, the light-transmitting protective plate 2 can slide relative to the sensor body 1 via the sliding component 3, thereby exposing the emission and receiving openings for easy wiping or replacement. After maintenance is completed, push the light-transmitting protective plate 2 back to the preset working position. The buckle 21 will automatically engage with the slot, locking the light-transmitting protective plate 2 again and restoring normal working status.

[0045] This application achieves rapid pulling and locking of the light-transmitting protective plate 2 through the cooperation of the sliding component 3 and the unlocking component 4, making maintenance operations simple and intuitive, requiring no tools, greatly reducing downtime and improving maintenance efficiency. Combining window maintenance and filter maintenance into a single step reduces one disassembly / reassembly and one downtime, significantly lowering maintenance costs.

[0046] In some embodiments of this application, in order to further optimize the functionality and performance of the unlocking component 4, this application proposes a specific implementation method for the unlocking component 4, aiming to provide an unlocking scheme that is simple in structure, reliable in operation, and easy to integrate.

[0047] Specifically, the unlocking assembly 4 includes a reset spring 41, a connecting rod 42, and a pressing head 43. The pressing head 43 is configured to abut against the latch 21, the connecting rod 42 is connected to the pressing head 43, and the reset spring 41 is used to drive the connecting rod 42 to reset.

[0048] The return spring 41 is typically a helical spring. Its function is to restore the connecting rod 42 and the pressing head 43 to their initial positions after the external force is released, ensuring that the unlocking component 4 will not accidentally touch or interfere with the locking of the latch 21 when not in operation. The connecting rod 42, as a force transmission component, transmits the external operating force to the pressing head 43, and simultaneously achieves reset under the action of the return spring 41. The pressing head 43 is the component that directly contacts the latch 21. Its shape and material can be optimized according to the structure of the latch 21 to ensure effective and smooth release of the latch during pressing.

[0049] This application's solution, by introducing a combination of a return spring 41, a connecting rod 42, and a pressing head 43, enables the unlocking assembly 4 to release the locking state of the light-transmitting protective plate 2 in a controlled and reliable manner. When unlocking is required, external force is transmitted to the pressing head 43 via the connecting rod 42, which then applies force to the latch 21, disengaging it from the slot. Once the external force is released, the return spring 41 drives the connecting rod 42 and the pressing head 43 back to their initial positions, thus avoiding potential problems caused by the unlocking assembly 4 failing to reset in time, such as obstruction or damage when the light-transmitting protective plate 2 slides again. This design ensures smooth unlocking operation and system stability.

[0050] The introduction of the reset spring 41 ensures that the unlocking component 4 automatically resets after operation, avoiding omissions or inconveniences that may be caused by manual reset. In addition, this modular design also makes the integration and maintenance of the unlocking component 4 easier.

[0051] In some embodiments, this application further proposes a sliding component 3, which includes an inner slide rail 31 and an outer slide rail 32, wherein the inner slide rail 31 is connected to the light-transmitting protective plate 2, the outer slide rail 32 is connected to the sensor body 1, and the inner slide rail 31 is slidably disposed on the outer slide rail 32.

[0052] The sliding component 3 is a key structure for achieving smooth sliding of the light-transmitting protective plate 2 relative to the sensor body 1. The inner slide rail 31 is typically designed as an integral or firmly connected component to the light-transmitting protective plate 2, and its surface is precision-machined to ensure low friction and high wear resistance. The outer slide rail 32 is fixed to the sensor body 1, providing support and guidance for the inner slide rail 31. The inner slide rail 31 is slidably mounted on the outer slide rail 32, meaning that a sliding fit relationship is formed between the two, achieved, for example, through ball bearings, roller bearings, or sliding bearings, to minimize frictional resistance during sliding.

[0053] When the light-transmitting protective plate 2 needs to slide, the inner slide rail 31 moves smoothly under the guidance of the outer slide rail 32, thereby ensuring that the light-transmitting protective plate 2 can smoothly cover or expose the emission opening and the receiving opening, improving the convenience of operation and the reliability of the equipment.

[0054] Based on the sliding component 3, this application further adds a limiting block 34 and a pin 33. Through the cooperation of the limiting block 34 and the pin 33, the sliding stroke of the inner slide rail 31 can be precisely limited, thereby ensuring the positioning accuracy of the light-transmitting protective plate 2.

[0055] The limiting block 34 is a protruding structure made of elastic materials such as rubber or plastic, and it is fixed to the surface of the inner slide rail 31. The pin 33 is a columnar structure made of metal or other rigid materials, and it is fixed to the outer slide rail 32, with the position of the pin 33 corresponding to the sliding path of the limiting block 34. When the inner slide rail 31 slides on the outer slide rail 32, the limiting block 34 moves accordingly until it abuts against the pin 33. By adjusting the size and position of the limiting block 34 and the pin 33, the sliding stroke of the inner slide rail 31 can be precisely controlled, thereby ensuring the positioning accuracy of the light-transmitting protective plate 2.

[0056] In some embodiments of this application, the elastic hook is a structure that utilizes the elastic deformation of a material to achieve engagement and disengagement. It can deform under external force and return to its original shape after the force is removed. The pressing head 43 is designed to apply pressure precisely to overcome the engaging force of the elastic hook, allowing it to smoothly disengage from the slot. Specifically, the elastic hook can be made of various materials and structures; for example, it can be made of metal or plastic with good elasticity and fatigue resistance, and designed with a slightly angled curved shape to facilitate pressure application by the pressing head 43. The shape and size of the pressing head 43 can be optimized according to the structure of the elastic hook to ensure effective compression of the elastic hook, causing it to disengage from the slot.

[0057] The solution of this application uses the extrusion head 43 to directly act on the elastic hook, causing the elastic hook to deform and thus release the engagement with the slot.

[0058] In the embodiments described above, the emitter 11 refers to a device capable of emitting light of a specific wavelength, such as an infrared light-emitting diode or a laser diode. The function of the emitter 11 is to emit light towards the area to be detected, which is reflected or scattered upon encountering the filter. The receiver 12 refers to a device capable of receiving optical signals and converting them into electrical signals, such as a photoresistor or a photodiode. The receiver 12 is used to receive the light reflected or scattered by the filter and to determine the degree of filter blockage based on changes in the received light intensity.

[0059] In one specific implementation, the emitter 11 can be an infrared light-emitting diode (LED), and the receiver 12 can be a photoresistor. Infrared light has strong penetrating power and can effectively penetrate the filter. The photoresistor is sensitive to infrared light and can accurately detect changes in light intensity. In practical applications, the appropriate type of emitter 11 and receiver 12 can be selected according to the specific filter material and the characteristics of the blockage to achieve the best detection effect.

[0060] In addition, this application provides mounting holes 35 on the outer slide rail 32, which can more firmly fix the outer slide rail 32 to the sensor body 1, thereby improving the stability of the overall structure.

[0061] The mounting hole 35 refers to a pre-set hole on the outer slide rail 32 for accommodating screws or other fasteners. Specifically, the mounting hole 35 can be a through hole or a threaded hole to facilitate different fastening methods. As a preferred embodiment, the number of mounting holes 35 can be adjusted according to actual needs. For example, mounting holes 35 can be provided at multiple locations on the outer slide rail 32 to increase the reliability of the fixation.

[0062] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sensing sensor for detecting filter clogging, characterized in that, include: The sensor body (1) is provided with a light emitter (11), a light receiver (12), and a card slot; A light-transmitting protective plate (2) is provided with a buckle (21) that cooperates with the slot; A sliding component (3) is provided, which connects the sensor body (1) and the light-transmitting protective plate (2) so that the light-transmitting protective plate (2) can slide relative to the sensor body (1) to shield the light emitter (11) and the light receiver (12). The unlocking component (4) is located on the sensor body (1); When the light-transmitting protective plate (2) slides to the preset working position, the buckle (21) engages with the slot to lock the light-transmitting protective plate (2); The unlocking component (4) is used to release the latch (21) from the engagement state of the slot.

2. The sensing sensor for detecting filter clogging according to claim 1, characterized in that, The unlocking component (4) includes a reset spring (41), a connecting rod (42), and a pressing head (43); the pressing head (43) abuts against the buckle (21), the connecting rod (42) is connected to the pressing head (43), and the reset spring (41) is used to drive the connecting rod (42) to reset.

3. The sensing sensor for detecting filter clogging according to claim 1, characterized in that, The sliding assembly (3) includes an inner slide rail (31) and an outer slide rail (32); the inner slide rail (31) is connected to the light-transmitting protective plate (2), and the outer slide rail (32) is connected to the sensor body (1). The inner slide rail (31) is slidably disposed on the outer slide rail (32).

4. The sensing sensor for detecting filter clogging according to claim 3, characterized in that, The sliding assembly (3) further includes a limiting block (34) disposed on the inner slide rail (31) and a pin (33) disposed on the outer slide rail (32); when the inner slide rail (31) slides, the limiting block (34) abuts against the pin (33) to limit the sliding stroke of the inner slide rail (31).

5. The sensing sensor for detecting filter clogging according to claim 2, characterized in that, The buckle (21) is an elastic hook; the pressing head (43) is used to press the elastic hook to disengage it from the slot.

6. The sensing sensor for detecting filter clogging according to claim 2, characterized in that, The reset spring (41) is sleeved on the connecting rod (42).

7. The sensing sensor for detecting filter clogging according to claim 3, characterized in that, The outer slide rail (32) is provided with mounting holes (35) for fixing the outer slide rail (32) to the sensor body (1).

8. The sensing sensor for detecting filter clogging according to claim 1, characterized in that, The unlocking component (4) is located on the top of the sensor body (1).

9. The sensing sensor for detecting filter clogging according to claim 1, characterized in that, The sliding component (3) is located at the bottom of the sensor body (1).

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