Sampling pipe network cleaning device of air sampling early warning system

Abstract

The invention relates to the technical field of fire fighting equipment, in particular to a sampling pipe network cleaning device of an air sampling early warning system, which comprises a user side, a cloud platform side, an industrial suction and discharge device, a controller, a dust quantity analyzer and an air sampling assembly, and is characterized in that the controller is in signal connection with the dust quantity analyzer and the industrial suction and discharge device; the controller is in network connection with the cloud platform end through network data transmission, the cloud platform end is in communication connection with the user end, the industrial suction and discharge device is connected with the dust quantity analyzer through a dust suction hose, and the dust quantity analyzer is connected with the air sampling assembly through a purging valve interface. According to the invention, efficient and professional detection pipe network cleaning can be realized; the device can greatly reduce the inhalation dosage of poisonous and harmful dust by personnel in poisonous and harmful places, prevents the personnel from entering the poisonous and harmful environment in daily life, and can perform online comparison on historical data and current data to timely adjust the cleaning period of the detection pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of fire-fighting equipment, and in particular to a sampling pipe network cleaning device for an air sampling early warning system. Background Art

[0002] The air sampling early warning system is an advanced fire detection technology. It is based on the principle of laser scattering detection and microprocessor control technology. It collects air samples through the sampling pipe network distributed in the protected area to measure smoke particles, thereby giving accurate smoke concentration values ​​and issuing multi-level fire alarms according to the smoke alarm thresholds set in advance by the system. Compared with traditional passive fire detection methods, such as cable-type heat detectors, this system has higher sensitivity and earlier warning capabilities, and can better ensure the normal operation of places such as subways and large buildings and the safety of people's lives.

[0003] However, during the use of the sampling pipe network of the air sampling early warning system, dust, dirt and other impurities will inevitably accumulate, which will affect the sampling efficiency and accuracy of the sampling pipe network, and further affect the fire detection capability of the system. Therefore, the cleaning device of the sampling pipe network is particularly important.

[0004] The traditional method of cleaning the sampling pipe network is often manual cleaning, which is not only time-consuming and labor-intensive, but also difficult to ensure the cleaning effect. At the same time, the manual cleaning process may also cause damage to the sampling pipe network, increasing the maintenance cost of the system. Therefore, the development of an efficient, automatic and reliable sampling pipe network cleaning device is of great significance to improving the stability and reliability of the air sampling early warning system.

[0005] Taking into account the particularity of the installation environment being not clean enough, an external filter is installed at the entrance of the sampling network of the very early aspirating smoke detector. The sampling network of the aspirating detector needs to be purged regularly. Installing a purging interface on the sampling network can conveniently open and close the purging port of the sampling network to avoid the situation where the sampling pipe is pulled out of the detector with improper force at the moment, causing damage to the sampling network. The setting principles and installation requirements of the external filter and purging valve interface equipment are as follows: (1) The aspirating detector system needs to be equipped with an external filter and purging valve interface. (2) The external filter is installed at the pipeline inlet close to the aspirating detector, and one is configured for each pipeline. (3) The purging valve interface is installed above the external filter, and one is configured for each pipeline.

[0006] When performing regular purges in general environmental areas, civilian vacuum cleaners are used, which have problems such as mismatched interfaces, direct dust discharge, serious environmental pollution in the cleaning room, and the inability to quantitatively detect the purge effect. When performing regular purges for air sampling in toxic and hazardous environmental areas, civilian vacuum cleaners are also used, which have problems such as mismatched interfaces, inability to effectively collect dust, serious environmental pollution in the cleaning room, which can easily cause personnel to be harmed by toxic and hazardous substances, and the inability to quantitatively detect the purge effect. Especially during the shutdown and overhaul of large equipment, if the purge effect of the air sampling network is not good, it will greatly affect the sampling quality of the air sampling host. When the network fails during daily operation in the later stage, personnel will need to re-enter the toxic and hazardous environment for processing; in addition, when personnel cannot stay in the toxic and hazardous environment for a long time, the dust cleaning result data cannot be observed and monitored in real time.

[0007] There are currently no dedicated air sampling purge tools on the market for air sampling early warning systems. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a sampling pipe network cleaning device for an air sampling early warning system to solve the problems raised in the above background technology.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: providing a sampling pipe network cleaning device for an air sampling early warning system, including a user end, a cloud platform end, an industrial suction and exhaust device, a controller, a dust analyzer, and an air sampling component, wherein the controller is connected to the dust analyzer and the industrial suction and exhaust device by signal, the controller is connected to the cloud platform network through network data transmission, the cloud platform end is connected to the user end by communication, the industrial suction and exhaust device is connected to the dust analyzer through a dust suction hose, and the dust analyzer is connected to the air sampling component through a purge valve interface;

[0010] The cloud platform is used to receive and store data information on airflow pressure, airflow flow, dust particle size, dust quantity and dust collection weight, and to organize and analyze the collected data information;

[0011] The user terminal is used to display the data information received by the cloud platform terminal in real time and issue corresponding instructions;

[0012] The controller is used to receive instructions sent by the user end, and control the dust quantity analyzer and the industrial suction and exhaust device to complete relevant instructions.

[0013] Furthermore, the cloud platform includes a data recording module and a data analysis and statistics module;

[0014] The data recording module is used to collect data information on airflow pressure, airflow flow, dust particle size, dust quantity and dust collection weight and store the collected data information in real time;

[0015] The data analysis and statistics module is used to organize and analyze the information collected by the data recording module, predict possible events by analyzing the information, and send out early warning signals to staff.

[0016] Furthermore, the air sampling component includes a sampling pipe, an air sampling detector and a filter. The air sampling detector is fixed on a wall. The sampling pipe is connected with the purge valve interface, the filter and the air sampling detector in sequence from top to bottom.

[0017] Furthermore, the industrial suction and exhaust device includes a water collection bag, a dust collection bag and a blower, wherein the blower is used to provide an air pressure power source for blowing or dust collection on the air sampling tube, and the dust collection bag is used to store the sucked dust for later centralized processing.

[0018] Furthermore, the material used for the water collecting bag and the dust collecting bag is any one of polyester, acrylic, PPS, P84, PTFE, and glass fiber.

[0019] Furthermore, the water collecting bag and dust collecting bag are made of any one of P84 needle felt dust collecting bag, Metas needle felt dust collecting bag, PPS needle felt dust collecting bag, expanded glass fiber, and ultrafine glass fiber, wherein the monofilament diameter of the ultrafine glass fiber is between 3.5 and 4 μm.

[0020] Furthermore, the dust content analyzer includes a dust particle laser detector, which is used to measure the dust content of granular products and powders and determine the dust index.

[0021] Furthermore, the purge valve interface is a detachable interface, and the connection between the dust analyzer and different air sampling components can be achieved by disassembling and replacing purge valve interfaces of different specifications.

[0022] Furthermore, the industrial suction and exhaust device is driven by fuel or electricity.

[0023] Furthermore, the detachable manner of the purge valve interface is a plug-in connection or a threaded connection.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. The air sampling early warning system sampling pipe network cleaning device has the functions of dust blowing and cleaning integration, dust quantity statistics and analysis. Therefore, the system can achieve efficient and professional pipe network cleaning; reduce the personnel dose during overhaul and avoid personnel entering toxic and harmful environments during daily periods.

[0026] 2. The present invention can directly read the mass concentration of particulate matter (mg / m3) and quickly obtain the result, or set the sampling time according to the user's needs or according to the on-site sampling pipe network parameters and dust parameters. The measurement is fast, accurate and has high detection sensitivity.

[0027] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered to be part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0028] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are not drawn to scale according to actual reference objects. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the present invention will be described by way of example and with reference to the accompanying drawings, in which:

[0030] Figure 1 It is a schematic diagram of the overall structure of the sampling pipe network cleaning device of the air sampling early warning system of the present invention.

[0031] Figure 2 This is a principle block diagram of the sampling pipe network cleaning device of the air sampling early warning system of the present invention.

[0032] Figure 3 The present invention is a schematic diagram of the working process of the sampling pipe network cleaning device of the air sampling early warning system.

[0033] Reference numerals:

[0034] 1-User end; 2-Cloud platform end; 3-Industrial suction and exhaust device; 4-Controller; 5-Dust quantity analyzer; 6-Purge valve interface; 7-Filter; 8-Sampling pipeline; 9-Air sampling detector. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meaning understood by people with general skills in the field to which the present invention belongs.

[0036] The words "include" or "comprises" and the like used in the patent application specification and claims of the present invention mean that the elements or objects appearing before "include" or "comprises" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprises", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 3 As shown:

[0039] The embodiment of the present invention provides a sampling pipe network cleaning device for an air sampling early warning system, comprising a user end 1, a cloud platform end 2, an industrial suction and exhaust device 3, a controller 4, a dust quantity analyzer 5, and an air sampling component, wherein the controller 4 is signal-connected to the dust quantity analyzer 5 and the industrial suction and exhaust device 3, the controller 4 is network-connected to the cloud platform end 2 through network data transmission, the cloud platform end 2 is communication-connected to the user end 1, the industrial suction and exhaust device 3 is connected to the dust quantity analyzer 5 through a dust suction hose, and the dust quantity analyzer 5 is connected to the air sampling component through a purge valve interface 6;

[0040] The cloud platform terminal 2 is used to receive and store data information on airflow pressure, airflow flow, dust particle size, dust quantity and dust collection weight, and to organize and analyze the collected data information;

[0041] The user terminal 1 is used to display the data information received by the cloud platform terminal 2 in real time and issue corresponding instructions;

[0042] The controller 4 is used to receive instructions sent by the user terminal 1, and control the dust analyzer 5 and the industrial suction and exhaust device 3 to complete relevant instructions.

[0043] In some embodiments of the present invention, the cloud platform terminal 2 includes a data recording module and a data analysis and statistics module;

[0044] The data recording module is used to collect data information on airflow pressure, airflow flow, dust particle size, dust quantity and dust collection weight and store the collected data information in real time;

[0045] The data analysis and statistics module is used to organize and analyze the information collected by the data recording module, predict possible events by analyzing the information, and send out early warning signals to staff.

[0046] The data recording module and the data analysis and statistics module store the data in real time in the cloud platform end 2 through the data transmission channel of the field controller 4, collect, organize, analyze, evaluate and scenario-based digital twins of various information and data, predict possible events, and promptly send early warning signals to relevant departments or managers so that corresponding response measures can be taken.

[0047] Early warning analysis and judgment usually includes the following steps:

[0048] Step 1: Information collection: Collect various relevant information and data, including historical data, real-time data, etc.

[0049] Step 2: Information organization: Classify, filter, and remove duplicates of the collected information for subsequent analysis.

[0050] Step 3: Data analysis: Use statistics, data mining and other methods to analyze the organized information and discover the patterns and trends.

[0051] Step 4: Risk assessment: Based on the analysis results, assess the risk level and impact scope of possible emergencies or crisis events.

[0052] Step 5: Warning release: Based on the risk assessment results, timely issue warning signals to relevant departments or personnel to remind them to take appropriate response measures.

[0053] Early warning analysis and judgment is one of the important links in management, which can help relevant departments or personnel to prepare for response in advance and reduce losses and casualties. At the same time, early warning analysis and judgment can also provide important decision-making support for enterprises and help them formulate more scientific and reasonable development strategies and risk management strategies.

[0054] By analyzing historical data, environmental factors, etc., the possibility of occurrence can be predicted and preventive measures can be taken in advance.

[0055] In some embodiments of the present invention, the user terminal 1 may be a mobile phone app terminal of the user.

[0056] In some embodiments of the present invention, the air sampling assembly includes a sampling pipe 8, an air sampling detector 9 and a filter 7. The air sampling detector 9 is fixed on a wall. The sampling pipe 8 is connected to the purge valve interface 6, the filter 7 and the air sampling detector 9 in sequence from top to bottom.

[0057] In some embodiments of the present invention, the industrial suction and exhaust device 3 includes a water collection bag, a dust collection bag and a blower. The blower is used to provide an air pressure power source for blowing or dusting the air sampling tube. The dust collection bag is used to store the sucked dust for later centralized processing. . Compared with the conventional industrial suction and exhaust device 3, the industrial suction and exhaust device 3 used in the present invention is equipped with a blower. The blower uses positive pressure to blow and negative pressure to absorb dust. The blower converts electrical energy into air kinetic energy through the rotating impeller, providing the industrial suction and exhaust device 3 with the necessary suction and exhaust capacity, and the blower can accurately deliver a certain amount of air, ensuring that the industrial suction and exhaust device 3 can effectively absorb and discharge air, dust and other waste during operation. The blower can also increase the fluid pressure, exert force on the fluid and push it to the outlet, thereby increasing the pressure and flow of the fluid and improving the cleaning efficiency of the industrial suction and exhaust device 3. The present invention connects the industrial suction and exhaust device 3 and the dust analyzer 5 through a dust suction hose. When the blower increases the fluid flow rate, the gas flow sample analyzed by the dust analyzer 5 is correspondingly larger, and the related parameters obtained are more accurate.

[0058] The dust analyzer 5 is installed in the sampling pipe network cleaning device of the air sampling early warning system, and is an instrument used to analyze the number and size of dust particles in the unit volume of air. The dust analyzer 5 has the characteristics of multiple functions, high measurement accuracy, fast speed, easy to carry and simple operation, and can directly display the particle concentration and particle size distribution diagram. It is widely used for dust detection in the air sampling pipe 8 in places such as electronics, optics, chemistry, food, cosmetics, medicine and health, biological products, aviation and aerospace, and can directly output or print out the results of the detection and analysis.

[0059] In some embodiments of the present invention, the water collection bag and the dust collection bag are made of any one of polyester, acrylic, PPS, P84, PTFE, and glass fiber. When the air sampling assembly is applied to general scenarios, the water collection bag and the dust collection bag are made of any one of the above materials.

[0060] In some embodiments of the present invention, the water collection bag and dust collection bag are made of any one of P84 needle felt dust collection bag, Metas needle felt dust collection bag, PPS needle felt dust collection bag, expanded glass fiber, and ultrafine glass fiber, wherein the monofilament diameter of the ultrafine glass fiber is between 3.5 and 4 μm. When the air sampling assembly is applied to a place with toxic and harmful dust, the material used for the water collection bag and the dust collection bag is any one of the above materials. Toxic and harmful dust refers to dust with nuclear contamination. Among them, the material P84 needle felt dust collection bag has excellent high temperature resistance and is suitable for dust removal under various high temperature flue gas conditions, and is particularly suitable for handling nuclear contaminated dust. The material of Fluoromes needle felt dust collection bag also has good high temperature resistance and is suitable for dust collectors in various complex working conditions, including the treatment of nuclear contaminated dust. Metas needle felt dust collection bag: It is also suitable for high temperature environments and is suitable for the collection and treatment of nuclear contaminated dust. PPS needle felt dust bag is waterproof, oil-proof and corrosion-resistant, and is suitable for harsh working conditions, including the treatment of nuclear contaminated dust. Expanded glass fiber has excellent thermal stability and is suitable for the treatment of nuclear contaminated dust in high temperature environments. Ultrafine glass fiber is processed by weaving and non-woven processes, and has the characteristics of high filtration efficiency and long service life, and is suitable for the treatment of nuclear contaminated dust.

[0061] In some embodiments of the present invention, the dust quantity analyzer 5 includes a dust particle laser detector. The working principle of the dust particle laser detector is mainly based on the principle of laser scattering: the detector emits a laser beam, and when the laser beam passes through the air containing dust particles, the dust particles will scatter the laser beam. The receiver in the detector measures the intensity of this scattered light. The intensity of the scattered light is directly related to the concentration of dust particles in the air: the higher the concentration of dust particles, the stronger the intensity of the scattered light; the lower the concentration of dust particles, the lower the intensity of the scattered light. Based on the intensity of the scattered light, the detector can determine the concentration of dust in the air. This principle enables the dust particle laser detector to efficiently and accurately measure the dust concentration in the air.

[0062] The dust particle laser detector has a built-in filter membrane online sampler. While continuously monitoring the dust concentration, it can collect particles for analysis of their composition. It can directly read the dust mass concentration (mg / m3) and has PM10, PM5, PM2.5 and TSP cutters to choose from. The instrument uses a powerful vacuum pump, making it more suitable for the detection of inhalable particle concentrations that require a longer sampling tube. TSP is the abbreviation for total suspended particulate matter in the atmosphere.

[0063] The dust particle laser detector can reliably measure the dust content of granular products and powders and determine the dust index. The user-friendly interface with integrated display allows easy measurement settings and complete data control when using the software. It can accurately and reproducibly quantify the dust content of the sample and can be used to objectively evaluate the effect of dust reduction measures such as agglomeration, granulation, liquid adsorption or the addition of dust suppressants.

[0064] In some embodiments of the present invention, the purge valve interface 6 is a detachable interface, and the connection between the dust analyzer 5 and different air sampling components is achieved by disassembling and replacing the purge valve interface 6 with different specifications.

[0065] In some embodiments of the present invention, the detachable manner of the purge valve interface 6 is a plug-in connection or a threaded connection.

[0066] In some embodiments of the present invention, the industrial suction and exhaust device 3 is driven by fuel or electricity, has a strong driving force, and the high wind pressure and large flow generated by the blower greatly improve the cleanliness of the sampling pipeline 8.

[0067] The sampling pipe network cleaning device of the air sampling early warning system has the functions of integrated dust blowing and cleaning, dust quantity statistics and analysis. Therefore, the system can realize efficient and professional pipe network cleaning; reduce the personnel dose during overhaul and avoid personnel entering toxic and harmful environments during daily periods; can directly read the mass concentration of particulate matter (mg / m3), and get the result in 1 minute, or set the sampling time according to user needs or according to the on-site sampling pipe network parameters and dust parameters; the measurement is fast, accurate, and the detection sensitivity is high; the self-calibration system is designed, and the instrument performance is stable and reliable; it has air curtain shielding and clean air self-cleaning functions to ensure that the optical system is not contaminated; it has a two-way communication function with a computer, and can process data through a PC, print curves and tables on site, and can also print in the background through a cloud platform. It has multiple functions such as continuous monitoring of particulate matter concentration, timed sampling, and alarm for excessive dust concentration.

[0068] In summary, the present invention uses the one-to-many interface of the cleaning kit to connect the dust analyzer 5, which analyzes the parameters such as the particle size and concentration of the dust, and collects and analyzes the data information through the cloud platform 2. The dust analyzer 5 is then connected to the industrial suction and exhaust device 3. According to the analysis results of the dust analyzer 5, the controller 4 promptly conveys the corresponding instructions to the industrial suction and exhaust device 3 to complete the vigorous cleaning of the pipeline. The industrial suction and exhaust device 3 stores the cleaned dust and centrally processes the dust in toxic and toxic places to prevent people from entering toxic and harmful environments during daily periods.

[0069] The sampling pipe network of the air sampling early warning system in the embodiment of the present invention can be cleaned in time, which improves the sensitivity of the air sampling early warning system. Timely cleaning of the sampling pipe network can prevent the accumulation of impurities such as dust and dirt, thereby ensuring the sensitivity of the system and enabling the system to accurately and timely detect potential fire hazards. Cleaning the sampling pipe network can remove factors that affect the accuracy of sampling, ensure that the air samples collected by the system are true and reliable, and thus ensure that the fire warning data output by the system is accurate. Regular cleaning of the sampling pipe network can reduce the wear and corrosion of impurities on the internal components of the system, extend the service life of the system, and reduce maintenance costs. For industrial production environments, timely cleaning of the sampling pipe network can ensure that the air sampling early warning system is always in good working condition, timely detect and warn of fire hazards, thereby ensuring production safety.

[0070] Therefore, in order to ensure the normal operation and effectiveness of the air sampling early warning system, it is crucial to clean the sampling pipe network in time.

[0071] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

[0072] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling pipe network cleaning device for an air sampling early warning system, characterized in that: It includes a user end, a cloud platform end, an industrial suction and exhaust device, a controller, a dust analyzer, and an air sampling component. The controller is connected to the dust analyzer and the industrial suction and exhaust device by signal. The controller is connected to the cloud platform network through network data transmission. The cloud platform end is connected to the user end by communication. The industrial suction and exhaust device is connected to the dust analyzer through a dust suction hose. The dust analyzer is connected to the air sampling component through a purge valve interface. The cloud platform is used to receive and store data information on airflow pressure, airflow flow, dust particle size, dust quantity and dust collection weight, and to organize and analyze the collected data information; The user terminal is used to display the data information received by the cloud platform terminal in real time and issue corresponding instructions; The controller is used to receive instructions sent by the user end, and control the dust quantity analyzer and the industrial suction and exhaust device to complete relevant instructions.

2. The air sampling early warning system sampling pipe network cleaning device according to claim 1 is characterized in that: The cloud platform end includes a data recording module and a data analysis and statistics module; The data recording module is used to collect data information on airflow pressure, airflow flow, dust particle size, dust quantity and dust collection weight and store the collected data information in real time; The data analysis and statistics module is used to organize and analyze the information collected by the data recording module, predict possible events by analyzing the information, and send out early warning signals to staff.

3. The air sampling early warning system sampling pipe network cleaning device according to claim 1 is characterized in that: The air sampling component includes a sampling pipeline, an air sampling detector and a filter. The air sampling detector is fixed on a wall. The sampling pipeline is connected with the purge valve interface, the filter and the air sampling detector in sequence from top to bottom.

4. The air sampling early warning system sampling pipe network cleaning device according to claim 1 is characterized in that: The industrial suction and exhaust device includes a water collection bag, a dust collection bag and a blower. The blower is used to provide an air pressure power source for blowing or dusting the air sampling tube, and the dust collection bag is used to store the sucked dust for later centralized processing.

5. The air sampling early warning system sampling pipe network cleaning device according to claim 1, characterized in that: The material used for the water collecting bag and the dust collecting bag is any one of polyester, acrylic, PPS, P84, PTFE and glass fiber.

6. The air sampling early warning system sampling pipe network cleaning device according to claim 1 is characterized in that: The water collecting bag and dust collecting bag are made of any one of P84 needle felt dust collecting bag, Metas needle felt dust collecting bag, PPS needle felt dust collecting bag, expanded glass fiber and ultrafine glass fiber, wherein the monofilament diameter of the ultrafine glass fiber is between 3.5 and 4 μm.

7. The air sampling early warning system sampling pipe network cleaning device according to claim 1, characterized in that: The dust content analyzer includes a dust particle laser detector, which is used to measure the dust content of granular products and powders and determine the dust index.

8. The air sampling early warning system sampling pipe network cleaning device according to claim 1, characterized in that: The purge valve interface is a detachable interface, and the connection between the dust analyzer and different air sampling components can be achieved by disassembling and replacing purge valve interfaces of different specifications.

9. The air sampling early warning system sampling pipe network cleaning device according to claim 8, characterized in that: The detachable mode of the purge valve interface is a plug-in connection or a threaded connection.

10. The air sampling early warning system sampling pipe network cleaning device according to claim 1, characterized in that: The industrial suction and exhaust device is driven by fuel or electricity.

Images