Automatic monitoring system of bag-type dust collector

Abstract

The utility model provides an automatic monitoring system for a bag-type dust collector, which comprises a middle box body and a blowing system, an air duct is arranged in the middle of the middle box body, a dust collection box chamber and an air purification chamber are arranged on two sides of the air duct, the air duct is divided into an air inlet duct and an air outlet duct by an air duct inclined plate, an air inlet is arranged on the air inlet duct, and an air outlet is arranged on the air outlet duct; the blowing system is mounted on the air purification chamber and comprises a plurality of blowing pipes which are aligned to the opening parts of the filter bags and blow air inwards, and sensors for monitoring pressure and temperature are arranged on the blowing pipes, so that the filtering efficiency of dusty gas is improved by adopting the symmetrical dust removal box chambers, the dust removal effect of the cloth bags is improved, and the dust removal efficiency of the cloth bags is improved. Meanwhile, parameter monitoring is carried out on each tube bundle by adopting a pressure sensor and a temperature sensor, and related threshold values are set so as to give an alarm in time and monitor the sealing performance of the pulse valve, so that leakage can be found in time, and the working reliability of the bag-type dust collector is improved.

Description

Technical Field

[0001] This utility model relates to dust collectors, and more particularly to an automatic monitoring system for baghouse dust collectors. Background Technology

[0002] Baghouse dust collectors are a common type of dust removal equipment that can effectively remove solid particles from gases, thereby significantly reducing the emission of air pollutants. The pulse-jet cleaning system is the core component of a baghouse dust collector, responsible for removing dust from the filter bags to ensure the dust removal effect.

[0003] Existing baghouse dust collectors suffer from low dust removal efficiency and are prone to air leaks in their pulse-jet cleaning systems, resulting in low dust removal efficiency. Furthermore, leaks are difficult to detect manually, requiring frequent starts of the air compressor to maintain operating pressure. Additionally, the numerous leak points in the pipelines make troubleshooting difficult and maintenance challenging for operators. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the problems of low dust removal efficiency and difficulty in troubleshooting of existing bag dust collectors, this utility model provides an automatic monitoring system for bag dust collectors to solve the above problems.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an automatic monitoring system for a bag filter dust collector, including a middle box and a pulse-jet system. The middle box has an air duct in its center, and a dust collection chamber and a clean air chamber are arranged on both sides of the air duct. The air duct is divided into an inlet duct and an outlet duct by an inclined plate. An inlet is provided on the inlet duct, and an outlet is provided on the outlet duct. The dust collection chamber is connected to the inlet duct through a dust inlet, and the clean air chamber is connected to the outlet duct through a clean air outlet. Filter bags are installed between the clean air chamber and the dust collection chamber. The pulse-jet system is installed on the clean air chamber and includes several pulse-jet pipes aimed at the openings of the filter bags to blow air inwards, and sensors monitoring the pressure and temperature inside the pulse-jet pipes.

[0006] Furthermore, the jetting system also includes an air collection box and a pulse valve. The jetting pipe is connected to the air collection box through the pulse valve. There is a jetting pipe bundle between the pulse valve and the jetting pipe. The pulse valve controls the on / off of compressed air in the jetting pipe bundle.

[0007] Furthermore: the middle box body is provided with 8 dust removal chambers, the 8 dust removal chambers are symmetrically arranged on both sides of the air duct, each dust removal chamber is provided with an air collection box, each blow pipe bundle is provided with a temperature sensor, and each air collection box is provided with a pressure sensor.

[0008] Furthermore, a baffle plate is provided at the dust inlet of the dust removal chamber.

[0009] The beneficial effects of this utility model are that the automatic monitoring system for baghouse dust collectors improves the filtration efficiency of dust-laden gas by adopting a symmetrical dust collection chamber, thereby enhancing the dust collection effect of the baghouse. At the same time, pressure and temperature sensors are used to monitor the parameters of each tube bundle and relevant thresholds are set for timely alarms. The sealing performance of the pulse valve is monitored to detect leaks in a timely manner, thus improving the operational reliability of the baghouse dust collector. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a front view of the structure of a bag filter dust collector with monitoring function according to this utility model;

[0012] Figure 2 yes Figure 1 Top view;

[0013] Figure 3 This is a schematic diagram of the jet injection system;

[0014] Figure 4 This is a cross-sectional view of the air duct;

[0015] Figure 5 This is a schematic diagram of the structural shape of the middle box;

[0016] Figure 6 This is a partial structural diagram of the dust removal chamber and the clean air chamber.

[0017] In the diagram: 1. Middle box; 2. Pulse jet system; 3. Air duct; 4. Dust collection chamber; 5. Clean air chamber; 6. Air duct inclined plate; 7. Air inlet; 8. Air outlet; 9. Air inlet; 10. Air outlet; 11. Dust inlet; 12. Clean air outlet; 13. Filter bag; 14. Pulse jet pipe; 15. Air collection box; 16. Pulse valve; 17. Pulse jet pipe bundle; 18. Temperature sensor; 19. Pressure sensor; 20. Baffle plate. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0020] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of the present invention pertain.

[0022] like Figures 1 to 6 As shown, this utility model provides an automatic monitoring system for a baghouse dust collector, including a middle housing 1 and a pulse-jet system 2. The middle housing 1 has an air duct 3 in the middle, and a dust collection chamber 4 and a clean air chamber 5 are arranged on both sides of the air duct 3. The air duct 3 is divided into an inlet duct 7 and an outlet duct 8 by an inclined plate 6. An inlet 9 is provided on the inlet duct 7, and an outlet 10 is provided on the outlet duct 8. The dust collection chamber 4 communicates with the inlet duct 7 through a dust inlet 11, and the clean air chamber 5 communicates with the outlet duct 8 through a clean air outlet 12. A filter bag 13 is installed between the clean air chamber 5 and the dust collection chamber 4. The pulse-jet system 2 is installed on the clean air chamber 5, and the pulse-jet system 2 includes several pulse-jet pipes 14 that blow air inwards towards the openings of the filter bags 13.

[0023] The bag filter of this application separates the air inlet duct 7 and the air outlet duct 8 in the air duct 3, so that the dusty air is uniformly introduced and the clean air is concentratedly discharged. The dust collection chamber 4 and the clean air chamber 5 are arranged on both sides of the air duct 3, which can shorten the gas flow distance of the air inlet and exhaust, optimize the air flow path, and improve the dust removal efficiency.

[0024] The raw gas containing a large amount of dust enters the air inlet 7 through the air inlet 9 and flows into the dust collection box through the dust gas inlet 11. Because the pressure at the outlet of the bag filter is lower than the pressure at the inlet, the gas will pass through the filter bag 13 in the dust collection box 4. The dust and other solid particles contained in the gas will be filtered by the filter bag 13, remain outside the filter bag 13, and be deposited in the dust collection box 4. The filtered clean gas will pass through the clean gas chamber 5 and finally enter the air outlet 8 through the clean gas outlet 12 to complete the dust removal operation.

[0025] The jetting system 2 also includes an air collection box 15 and a pulse valve 16. The jetting pipe 14 is connected to the air collection box 15 through the pulse valve 16. There is a jetting pipe bundle 17 between the pulse valve 16 and the jetting pipe 14. The pulse valve 16 controls the on / off of compressed air in the jetting pipe bundle 17.

[0026] The pulse valve 16 controls the on / off of compressed air and can be opened when the filtration efficiency of the filter bag 13 decreases. It blows air through the blow pipe 14 to remove particulate matter attached to the surface of the filter bag 13, reduce clogging, and restore the filtration capacity of the filter bag 13.

[0027] The middle box 1 is provided with 8 dust removal chambers 4, which are symmetrically arranged on both sides of the air duct 3. Each dust removal chamber 4 is provided with a separate air collection box 15. Each jet pipe bundle 17 is provided with a temperature sensor 18, and each air collection box 15 is provided with a pressure sensor 19.

[0028] Eight dust collection chambers 4 are arranged on both sides of the air duct 3, with four air ducts 3 on each side. This allows for efficient distribution of dust-laden gas in the air duct 3, facilitating rapid dust removal and filtration operations. Meanwhile, temperature sensors 18 and pressure sensors 19 are installed on the pulse-jet system 2 to monitor the system's operation in real time.

[0029] In the existing technology, due to the low efficiency and leakage of the injection system 2, a large amount of compressed air resources are wasted and frequent equipment maintenance is required. After the pulse valve 16 performs the injection action, the injection system 2 can restore the pressure to the preset value within 30 seconds. This process demonstrates the system's good self-regulation and pressure-holding performance. When the diaphragm of the pulse valve 16 leaks, the measuring point of the pressure sensor 19 will monitor a significant abnormality in the pressure recovery time. Leakage will increase the pressure loss inside the system, thereby prolonging the time required for pressure recovery. In extreme cases, the pressure may fail to recover to the set value within the expected time, or even if it recovers to the set value, it may become unstable or unable to maintain pressure. For example, in the case of a slight leak in the diaphragm of the pulse valve 16, the pressure recovery time may be extended from the standard 30 seconds to more than 50 seconds.

[0030] Meanwhile, the temperature change of the tube bundle in the injection system 2 is caused by the transmission and release of compressed air in the injection system 2. Its flow state directly affects the temperature fluctuation range. When the pulse valve 16 is activated, the compressed air passes through the injection tube bundle 17 rapidly under pressure. According to actual monitoring data, the pressure of the compressed air is usually maintained at about 0.4 MPa, the temperature is maintained at about 28°C, and the flow velocity is between 20 m / s and 30 m / s. Within 400 seconds after the pulse valve 16 is activated, the temperature of the tube bundle will drop by 0.8°C to 1.2°C. This change is normal and reflects the influence of the heat exchange effect during the compressed air flow process on the tube bundle temperature.

[0031] When the diaphragm of pulse valve 16 leaks, this normal temperature change pattern will be disrupted. Because the leak affects the system's sealing, the flow state and path of compressed air will change, leading to increased heat loss. This causes the tube bundle temperature of the injection system 2 to not only be lower than the minimum value of the normal range, but also to show a continuous downward trend. Specifically, within the same time range, the temperature of the leaking tube bundle will drop by more than 1.2°C, or even higher.

[0032] This application adds pressure and temperature monitoring to the injection system 2 and sets respective thresholds. When the relevant parameters exceed the thresholds, an alarm is triggered, prompting maintenance and reminding operators to check for leaks in the pulse valve 16. In this application, each gas collection box 15 is equipped with a pressure sensor 19, and each injection tube bundle 17 is equipped with a temperature sensor 18. This is because pressure monitoring has high accuracy. This method allows for the identification of which gas collection box 15 has abnormal pressure, and then the identification of which tube bundle has abnormal temperature via the temperature sensor 18. The monitored data is simplified, false alarms are avoided, and the accuracy of data monitoring is improved.

[0033] A baffle plate 20 is provided at the dust inlet 11 in the dust removal chamber 4. The baffle plate 20 is mainly used to change the airflow direction of the dust inlet 11, so as to avoid excessive disturbance to the dust removal chamber 4 and ensure the normal operation of dust removal and filtration.

[0034] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automatic monitoring system for a baghouse dust collector, characterized in that: It includes a middle box (1) and a jet blowing system (2), characterized in that: the middle box (1) is provided with an air duct (3) in the middle, and a dust removal chamber (4) and a clean air chamber (5) are provided on both sides of the air duct (3). The air duct (3) is divided into an air inlet (7) and an air outlet (8) by an air duct inclined plate (6). An air inlet (9) is provided on the air inlet (7), and an air outlet (10) is provided on the air outlet (8). The dust removal chamber (4) is connected to the air inlet duct (7) through the dust inlet (11), and the clean air chamber (5) is connected to the air outlet duct (8) through the clean air outlet (12). A filter bag (13) is installed between the clean air chamber (5) and the dust removal chamber (4). The blowing system (2) is installed on the clean air chamber (5). The blowing system (2) includes several blowing pipes (14) that blow air into the filter bag (13) and sensors that monitor the pressure and temperature inside the blowing pipes (14).

2. The automatic monitoring system for a bag filter dust collector as described in claim 1, characterized in that: The jetting system (2) also includes an air collection box (15) and a pulse valve (16). The jetting pipe (14) is connected to the air collection box (15) through the pulse valve (16). There is a jetting tube bundle (17) between the pulse valve (16) and the jetting pipe (14). The pulse valve (16) controls the on / off of compressed air in the jetting tube bundle (17).

3. The automatic monitoring system for a bag filter dust collector as described in claim 2, characterized in that: The middle box (1) is provided with 8 dust removal chambers (4), which are symmetrically arranged on both sides of the air duct (3). Each dust removal chamber (4) is provided with a separate air collection box (15). Each blow pipe bundle (17) is provided with a temperature sensor (18), and each air collection box (15) is provided with a pressure sensor (19).

4. The automatic monitoring system for a bag filter dust collector as described in claim 2, characterized in that: A baffle plate (20) is provided at the dust inlet (11) in the dust removal chamber (4).

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