A dust suppression system for unloading areas
By installing a dust suppression system with a trigger module and a PLC control module in the unloading area, the problems of water waste and poor dust suppression effect in the existing technology are solved, and automated water resource management and efficient dust suppression are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG HAIMEN CONCH NEW MATERIALS CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-30
AI Technical Summary
The existing dust suppression system in the unloading area continuously sprays water in multiple unloading areas, resulting in a waste of water resources and poor dust suppression effect. It is also impossible to control the start and stop of the nozzles according to the entry and exit of the material distribution trolley in and out of the unloading area.
The system consists of a trigger module, a PLC control module, a water supply module, and nozzles. The trigger module detects the entry and exit of the fabric trolley, the PLC control module controls the start and stop of the nozzle solenoid valves, and the system is combined with a pressure tank and pressure sensor to optimize water resource utilization and spraying effect.
It achieves automatic control of nozzle start and stop based on the entry and exit of the fabric trolley, saving water resources, improving dust suppression effect, extending equipment life and ensuring sufficient water resources.
Smart Images
Figure CN224422332U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial automation technology, and more specifically, to a dust suppression system for unloading areas. Background Technology
[0002] It is known that when the sand and gravel stockpile area uses a conveyor belt for unloading, a large amount of dust is constantly being raised and spread in all directions during continuous use. This not only seriously harms the physical and mental health of the workers, but also greatly increases the difficulty of cleaning operations. Therefore, in order to reduce the harm of fly ash, dust suppression treatment is required. The existing dust suppression system involves manually turning on the nozzles to spray water, thereby increasing the air humidity to achieve the effect of dust suppression.
[0003] However, in actual use, since there are multiple unloading areas in the factory, continuous excessive spraying not only fails to achieve better dust suppression but also wastes water resources. Therefore, a dust suppression system for the unloading area is proposed as a further improvement so that the system can start and stop the nozzle spraying according to the material carrier entering and leaving the unloading area. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a dust suppression system for the unloading area to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust suppression system for an unloading area, comprising: a trigger module, a PLC control module, a water supply module, and nozzles located at the inlet and outlet of the unloading area;
[0006] The output terminal of the trigger module is connected to the input terminal of the PLC control module. The output terminal of the PLC control module is connected to the input terminal of the water supply module and the nozzle solenoid valve that controls the on / off state of the water mist. The output terminal of the water supply module is connected to the nozzle through the nozzle solenoid valve.
[0007] The water supply module includes: a frequency converter, a plunger pump, and a pressure stabilizing tank;
[0008] The output of the PLC control module is connected to the frequency converter, the frequency converter is connected to the plunger pump, the plunger pump is located in the closed water supply area, the output of the plunger pump is inserted into the pressure stabilizing tank, the pressure stabilizing tank is connected to the inlet of the nozzle solenoid valve through a pipeline, and the outlet of the nozzle solenoid valve is connected to the nozzle.
[0009] Furthermore, the triggering module includes: a limit switch triggered by physical contact and a proximity switch triggered by non-contact sensing;
[0010] The signal output terminal of the limit switch is connected to one input terminal of the PLC control module, and the signal output terminal of the proximity switch is connected to the other input terminal of the PLC control module; the PLC control module internally configures the two input signals as a logical OR relationship.
[0011] Furthermore, the contact output terminal of the limit switch is connected to the switch input terminal of a wireless transmitter, which is wirelessly connected to the wireless receiver; the input terminal of the PLC control module is connected to the switch output terminal of the wireless receiver.
[0012] Furthermore, the proximity switch is connected to the PLC control module circuitry.
[0013] Furthermore, the material of the pipeline is steel pipe.
[0014] Furthermore, a pressure sensor is fixedly installed within the enclosed water supply area.
[0015] The technical effects and advantages of this utility model are as follows:
[0016] Compared with existing technologies, by setting up a trigger module, which is activated when the material carrier enters or exits the unloading area, the PLC control module sends a start / stop signal to the nozzle solenoid valve, avoiding continuous over-spraying and saving water resources. By setting up a pressure stabilizing tank, instantaneous pressure fluctuations can be absorbed, providing a buffer and protecting related components, thus extending their service life. By setting up a pressure sensor to provide feedback on the water resources in the closed water supply area, timely water replenishment can be facilitated, ensuring sufficient water resources and preventing dust suppression from being affected. Attached Figure Description
[0017] Figure 1 This is a system block diagram of the present invention.
[0018] Figure 2 This is a schematic diagram illustrating the working principle of the trigger limit switch of this utility model.
[0019] Figure 3 This is a schematic diagram of the water supply module of this utility model.
[0020] The attached figures are labeled as follows:
[0021] 10. Trigger module; 11. Limit switch; 12. Proximity switch; 20. PLC control module; 30. Water supply module; 31. Frequency converter; 32. Plunger pump; 33. Pressure stabilizing tank; 34. Pipeline; 40. Nozzle; 50. Nozzle solenoid valve. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0023] As attached Figure 1 Appendix Figure 2 and attached Figure 3 The dust suppression system shown includes: a trigger module 10, a PLC control module 20, a water supply module 30, and nozzles 40 located at the inlet and outlet of the unloading area;
[0024] The output of the trigger module 10 is connected to the input of the PLC control module 20. The output of the PLC control module 20 is connected to the input of the water supply module 30 and the nozzle solenoid valve 50 that controls the on / off of the water mist. The output of the water supply module 30 is connected to the nozzle 40 through the nozzle solenoid valve 50.
[0025] The water supply module 30 includes: a frequency converter 31, a plunger pump 32, and a pressure stabilizing tank 33;
[0026] The output of the PLC control module 20 is connected to the frequency converter 31, and the frequency converter 31 is connected to the plunger pump 32. Since the plunger pump 32 is located in a closed water supply area, such as a closed water tank, the frequency converter 31 changes the output pressure and total flow of the water supply module 30 by adjusting the speed of the drive motor of the plunger pump 32, thereby affecting the spray performance of the nozzle 40. The output of the plunger pump 32 is inserted into the pressure stabilizing tank 33, and the pressure stabilizing tank 33 is connected to the inlet of the nozzle solenoid valve 50 through the pipeline 34. The pressure stabilizing tank 33 added to this system can absorb instantaneous pressure fluctuations and provide buffering.
[0027] The outlet of the nozzle solenoid valve 50 is connected to the nozzle 40.
[0028] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the triggering module 10 includes: a limit switch 11 triggered by physical contact and a proximity switch 12 triggered by non-contact sensing;
[0029] The signal output terminal of limit switch 11 is connected to one input terminal of PLC control module 20, and the signal output terminal of proximity switch 12 is connected to the other input terminal of PLC control module 20. The PLC control module 20 internally configures the two input signals as a logical OR relationship so that when the material trolley enters or exits the unloading area, triggering limit switch 11 or proximity switch 12, as long as one of them is triggered, the PLC control module 20 can send a start / stop signal to nozzle solenoid valve 50.
[0030] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the contact output terminal of limit switch 11 is connected to the switch input terminal of a wireless transmitter, which is wirelessly connected to a wireless receiver; the input terminal of PLC control module 20 is connected to the switch output terminal of the wireless receiver; so as to use wireless signal to quickly transmit the signal that triggers limit switch 11; and to avoid signal transmission failure that triggers proximity switch 12.
[0031] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the proximity switch 12 is connected to the PLC control module 20 via a circuit; this allows for the rapid transmission of a signal that triggers the proximity switch 12 using a limited signal; and prevents signal transmission failures that could trigger the limit switch 11.
[0032] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the material of pipe 34 is set to steel pipe; for example, DN65 stainless steel pipe is used.
[0033] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, a pressure sensor is fixedly installed in the closed water supply area; this allows for feedback on the water resource status within the closed water supply area, facilitating timely water replenishment, ensuring sufficient water resources, and preventing dust suppression from being affected.
[0034] Working principle: When using it, such as Figure 2 As shown, when the fabric trolley enters the unloading area, triggering either the limit switch 11 or the proximity switch 12 will cause the PLC control module 20 to send an opening signal to the nozzle solenoid valve 50. At the same time, the PLC control module 20 will also send a signal to the frequency converter 31 to drive the speed of the plunger pump 32's drive motor. The plunger pump 32 will then start working, extracting water resources from the closed water supply area and transmitting them to the pipeline 34 through the pressure stabilizing tank 33. Thus, the nozzle solenoid valve 50 controls the water in the pipeline 34 to be sprayed out from the nozzle 40, achieving dust suppression in the unloading area. When the fabric trolley leaves or stops, the PLC control module 20 sends a stop signal to the nozzle solenoid valve 50, at which point the nozzle solenoid valve 50 closes.
[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dust suppression system for an unloading area, characterized in that: include: Trigger module (10), PLC control module (20), water supply module (30) and nozzle (40) are installed at the inlet and outlet of the unloading area; The output terminal of the trigger module (10) is connected to the input terminal of the PLC control module (20). The output terminal of the PLC control module (20) is connected to the input terminal of the water supply module (30) and the nozzle solenoid valve (50) that controls the on / off of the water mist. The output terminal of the water supply module (30) is connected to the nozzle (40) through the nozzle solenoid valve (50). The water supply module (30) includes: a frequency converter (31), a plunger pump (32), and a pressure stabilizing tank (33); The output of the PLC control module (20) is connected to the frequency converter (31) via signal. The frequency converter (31) is connected to the plunger pump (32) via signal. The plunger pump (32) is located in the area providing closed water supply. The output of the plunger pump (32) is inserted into the pressure stabilizing tank (33). The pressure stabilizing tank (33) is connected to the inlet of the nozzle solenoid valve (50) via pipeline (34). The outlet of the nozzle solenoid valve (50) is connected to the nozzle (40).
2. A dust suppression system for an unloading area according to claim 1, characterized in that: The triggering module (10) includes: a limit switch (11) triggered by physical contact and a proximity switch (12) triggered by non-contact sensing; The signal output terminal of the limit switch (11) is connected to one input terminal of the PLC control module (20), and the signal output terminal of the proximity switch (12) is connected to the other input terminal of the PLC control module (20); the PLC control module (20) internally configures the two input signals as a logical OR relationship.
3. A dust suppression system for an unloading area according to claim 2, characterized in that: The contact output terminal of the limit switch (11) is connected to the switch input terminal of a wireless transmitter, which is wirelessly connected to the wireless receiver; the input terminal of the PLC control module (20) is connected to the switch output terminal of the wireless receiver.
4. A dust suppression system for an unloading area according to claim 2, characterized in that: The proximity switch (12) is connected to the PLC control module (20) via a circuit.
5. A dust suppression system for an unloading area according to claim 1, characterized in that: The material of the pipeline (34) is steel pipe.
6. A dust suppression system for an unloading area according to claim 1, characterized in that: A pressure sensor is fixedly installed within the enclosed water supply area.