Negative pressure detection system for material level of ash hopper of dust remover
By installing a negative pressure detection device and a back-flushing air source assembly in the dust collector's ash hopper, the problems of false alarms and false negatives in ash level detection in the ash hopper were solved, achieving highly accurate material level monitoring and avoiding the influence of dust on detection.
Patent Information
- Application Number
- CN202423280295.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing dust collector ash hopper level detection devices are easily affected by changes in fly ash ash quality and viscosity, leading to false alarms or false alarms, and are unable to accurately determine the ash level in the ash hopper.
Using a negative pressure detection device and a backflush air source assembly, the ash level is determined by detecting pressure changes at the probe port, and backflush is used to ensure detection accuracy and prevent dust blockage.
It improves the accuracy of material level detection, avoids false alarms or rejections, reduces the impact on dust particles, and ensures reliable judgment of the ash level height in the ash hopper.
Smart Images
Figure CN223551147U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a negative pressure detection system for the ash hopper level of a dust collector, belonging to the field of dust removal technology. Background Technology
[0002] Currently, there are various types of level switches used in dust collector hoppers, including passive nuclear non-contact type, intelligent radio frequency admittance type, tuning fork type, vibrating rod type, and rotary paddle type. These level switches are frequently affected by changes in fly ash quality and viscosity, as well as limitations of the equipment itself, often leading to malfunctions, false alarms, or false negatives, making it impossible for operators to accurately determine the accuracy of the ash level detection in the dust collector hopper. Therefore, this utility model proposes a negative pressure detection system for the ash level in a dust collector hopper. Utility Model Content
[0003] Based on the above background, the purpose of this utility model is to provide a dust collector ash hopper negative pressure detection system to solve the problems in the background technology.
[0004] This utility model provides the following technical solution:
[0005] A dust collector hopper negative pressure detection system includes two or more negative pressure detection devices, mounting pipes, controllers, and backflushing air source components. The mounting pipes are welded and fixed at different heights in the vertical direction of the dust collector hopper from top to bottom, depending on the number of negative pressure detection devices. The negative pressure detection devices are connected to the dust collector hopper through the mounting pipes. The controller is installed on the negative pressure detection devices. The negative pressure detection devices are connected and energized with the backflushing air source components through needle valves.
[0006] Preferably, the negative pressure detection device includes a detection port, an anti-clogging filter element, a probe tube, a filter element knob, and an air pipe interface. The probe tube is installed on the dust collector hopper via an installation tube. One end of the probe tube extends tightly into the dust collector hopper, and the other end of the probe tube is located outside the dust collector hopper. The anti-clogging filter element is located inside the probe tube. The detection port is located at the bottom of the portion of the probe tube inside the dust collector hopper. The filter element knob is threaded to the left end of the probe tube, and the air pipe interface is connected to the left end of the probe tube and communicates with the inside of the probe tube.
[0007] Preferably, the controller is mounted on the probe, and the needle valve is connected to the air pipe interface via an air pipe.
[0008] Preferably, the backflush origin component includes a solenoid valve, a pressure regulating valve, and a shut-off valve. The solenoid valve, pressure regulating valve, and shut-off valve are connected and communicate with each other in sequence via air pipes. The shut-off valve is connected and communicated with the needle valve via air pipes.
[0009] Preferably, the solenoid valve is connected to an external air source.
[0010] Compared with the prior art, the present invention has the following advantages:
[0011] This utility model discloses a negative pressure detection system for the ash hopper level in a dust collector. By setting up a negative pressure detection device, it can detect the pressure at the probe location to determine the ash level height in the dust collector hopper. By setting up a back-blowing air source component, it can back-blow and flush the negative pressure detection device to ensure accurate measurement. Thus, this utility model can solve problems such as false alarms or rejections in ash level measurement, and is not affected by environmental factors such as dust particles, greatly improving the accuracy of ash level detection. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the negative pressure detection system of this utility model;
[0014] Figure 2 This is a schematic diagram of the negative pressure material level detection device of this utility model;
[0015] In the diagram: 1. Negative pressure material level detection device; 2. Installation pipe; 3. Controller; 4. Needle valve; 5. Solenoid valve; 6. Pressure regulating valve; 7. Shut-off valve; 8. Detection port; 9. Anti-clogging filter element; 10. Probe tube; 11. Filter element knob; 12. Air pipe interface; 13. Dust collector hopper. Detailed Implementation
[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.
[0017] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0018] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.
[0019] like Figures 1-2 As shown, a dust collector hopper negative pressure detection system includes two or more negative pressure detection devices, an installation pipe 2, a controller 3, and a backflushing air source assembly. The installation pipe 2 is welded and fixed at different heights in the vertical direction of the dust collector hopper 13 from top to bottom according to the number of negative pressure detection devices. The negative pressure detection devices are connected to the dust collector hopper 13 through the installation pipe 2. The controller 3 is installed on the negative pressure detection devices. The negative pressure detection devices are connected and energized with the backflushing air source assembly through a needle valve 4.
[0020] In the above technical solution, a negative pressure detection device can be set up to detect the pressure at the test probe 8 position, thereby determining the ash level height in the dust collector ash hopper 13. By setting up a back-blowing air source component, back-blowing and flushing can be performed on the negative pressure detection device to ensure accurate measurement by the negative pressure detection device. Thus, this utility model can solve the problems of false alarms or rejections in material level measurement, and is not affected by environmental factors such as dust particles, greatly improving the accuracy of material level detection.
[0021] In this utility model, the negative pressure detection device includes a detection port 8, an anti-clogging filter element 9, a probe tube 10, a filter element knob 11, and an air pipe interface 12. The probe tube 10 is installed on the dust collector hopper 13 through the mounting tube 2. One end of the probe tube 10 extends tightly into the dust collector hopper 13, and the other end of the probe tube 10 is located outside the dust collector hopper 13. The anti-clogging filter element 9 is located inside the probe tube 10. The detection port 8 is located at the bottom of the part of the probe tube 10 located inside the dust collector hopper 13. The filter element knob 11 is threaded to the left end of the probe tube 10. The air pipe interface 12 is connected to the left end of the probe tube 10 and communicates with the inside of the probe tube 10.
[0022] In the above technical solution, by setting the probe port 8 to connect the inside of the probe tube 10 and the dust collector hopper 13, the controller 3 measures the pressure at the probe port 8 through each negative pressure material level detection device 1: if the pressure at the measurement position is less than 0 Pa, the ash level in the hopper is lower than the measurement position, and the controller 3 feeds back the low ash level signal to the automatic control system; if the pressure at the measurement position is ≥ 0 Pa, the ash level in the hopper reaches or exceeds the measurement position, and the controller 3 feeds back the high ash level signal to the automatic control system. In this utility model, the anti-clogging filter element 9 can be extended by rotating or pulling out the filter element knob 11, or made easier to pull out and replace.
[0023] In this invention, the controller 3 is mounted on the probe 10, and the needle valve 4 is connected to the air pipe interface 12 via an air pipe.
[0024] In this utility model, the backflush origin component includes a solenoid valve 5, a pressure regulating valve 6, and a shut-off valve 7. The solenoid valve 5, the pressure regulating valve 6, and the shut-off valve 7 are connected and communicate with each other in sequence through an air pipe. The shut-off valve 7 is connected and communicated with the needle valve 4 through an air pipe.
[0025] In the above technical solution, in order to avoid dust clogging the detection port 8 and the anti-clogging filter element 9, the solenoid valve 5 in the backflushing air source assembly is set to open at a set time period, and compressed air is used to backflush and flush the negative pressure material level detection device 1 to ensure the accurate measurement of the negative pressure detection device.
[0026] In this invention, the solenoid valve 5 is connected to an external air source, preferably an air compressor.
[0027] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A dust collector hopper negative pressure detection system, characterized in that: It includes two or more negative pressure detection devices, an installation pipe (2), a controller (3), and a backflush air source assembly. The installation pipe (2) is welded and fixed at different heights in the vertical direction of the dust collector hopper (13) from top to bottom according to the number of negative pressure detection devices. The negative pressure detection devices are connected to the dust collector hopper (13) through the installation pipe (2). The controller (3) is installed on the negative pressure detection devices. The negative pressure detection devices are connected and energized with the backflush air source assembly through a needle valve (4).
2. The dust collector hopper negative pressure detection system according to claim 1, characterized in that: The negative pressure detection device includes a detection port (8), an anti-clogging filter element (9), a probe (10), a filter element knob (11), and an air pipe interface (12). The probe (10) is installed on the dust collector hopper (13) through the mounting pipe (2). One end of the probe (10) extends tightly into the dust collector hopper (13), and the other end of the probe (10) is located outside the dust collector hopper (13). The anti-clogging filter element (9) is located inside the probe (10). The detection port (8) is located at the bottom of the part of the probe (10) located inside the dust collector hopper (13). The filter element knob (11) is threaded to the left end of the probe (10). The air pipe interface (12) is connected to the left end of the probe (10) and communicates with the inside of the probe (10).
3. The dust collector hopper negative pressure detection system according to claim 2, characterized in that: The controller (3) is installed on the probe (10), and the needle valve (4) is connected to the air pipe interface (12) through the air pipe.
4. The dust collector hopper negative pressure detection system according to claim 3, characterized in that: The backflush origin component includes a solenoid valve (5), a pressure regulating valve (6), and a shut-off valve (7). The solenoid valve (5), the pressure regulating valve (6), and the shut-off valve (7) are connected and energized in sequence through an air pipe. The shut-off valve (7) is connected and energized with the needle valve (4) through an air pipe.
5. The dust collector hopper negative pressure detection system according to claim 4, characterized in that: The solenoid valve (5) is connected to an external air source.