Anti-surge dust removal system

Abstract

The utility model discloses an anti-surge dust removal system, and relates to the technical field of circuit board dust removal. The system comprises a fan, a dust collection device, a first electric valve, a first controller and a machine tool, the fan is connected with an air outlet of the dust collection device through an exhaust pipeline; the machine tool communicates with an air inlet of the dust collecting device through a main pipeline. A plurality of machine tools are arranged; one end of the first electric valve is communicated with the main pipeline, and the other end is provided with a first opening communicated with the outside; the first electric valve is used for supplementing gas flow; the first controller is used for collecting the working states of the multiple machine tools in real time and judging the collection result. The first electric valve, the first controller and the machine tool are electrically connected; when the first controller judges that the collection result is smaller than a set value, the first controller opens the first electric valve to supplement air. By adopting the technical scheme, the system has the advantages of preventing the fan from surging, ensuring the stable and efficient operation of the system and saving energy.

Description

Technical Field

[0001] This utility model relates to the field of circuit board dust removal technology, specifically to an anti-surge dust removal system. Background Technology

[0002] The circuit board manufacturing process, including cutting, drilling, and milling, generates particulate metal shavings and a large amount of dust. If not removed promptly, this not only affects processing accuracy and product quality but also damages the machining ends of drill bits and other processing machines, shortening their lifespan. Existing dust collection systems often use fans, with one fan connected to multiple machine tools. However, when production is not at full capacity, some machine tools are shut down. This results in insufficient airflow into the system, causing the fans to operate at lower loads. This can lead to surge phenomena, causing significant mechanical damage to the fan impellers and casings. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing an anti-surge dust removal system, which has the advantages of preventing surge in the fan, ensuring stable and efficient operation of the system, and energy saving.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an anti-surge dust removal system, comprising: a fan, a dust collection device, a first electric valve, a first controller, and a machine tool;

[0005] The fan is connected to the air outlet of the dust collection device via an exhaust duct; the machine tool is connected to the air inlet of the dust collection device via a main duct; multiple machine tools are provided; one end of the first electric valve is connected to the main duct, and the other end has a first opening for communication with the outside; the first electric valve is used to supplement the gas flow; the first controller is used to collect the working status of multiple machine tools in real time and make real-time judgments on the collected results; the first electric valve, the first controller, and the machine tools are electrically connected.

[0006] When the first controller determines that the collected result is less than the set value, the first controller opens the first electric valve to replenish air.

[0007] The present invention further includes the following: the first controller includes: a data acquisition unit for receiving the working signal of the machine tool in the power-on state in real time and performing statistics on the working signal; a judgment unit for receiving and judging whether the acquisition result output by the data acquisition unit is less than a set value in real time; and a first control unit for controlling the first electric valve.

[0008] In a further embodiment of this invention, the fan is configured as a single-stage high-speed centrifugal fan.

[0009] The present invention further includes, in addition to, a frequency converter electrically connected to the fan and used to control the fan, a second controller, and a second electric valve having one end connected to the exhaust duct and the other end having a second opening for communication with the outside; the frequency converter, the second controller and the second electric valve are electrically connected to each other;

[0010] The second controller is used to monitor and receive the first output signal of the frequency converter in real time; when the second controller determines that surge has occurred, the second controller opens the second electric valve to provide supplemental air.

[0011] The present invention further includes, in this embodiment, a second controller comprising: a storage unit storing a second output signal historically output by the inverter during surge; an input unit for real-time monitoring and receiving the first output signal; a comparison unit for real-time comparison of the first output signal with the second output signal stored in the storage unit; and a second control unit for controlling the second electric valve.

[0012] The present invention further comprises: a second valve and a second electric actuator disposed on the second valve; one end of the second valve is disposed on the wall of the exhaust duct and communicates with the exhaust duct; the other end of the second valve is provided with the second opening; the second electric actuator is electrically connected to the second controller.

[0013] The present invention further provides that the comparison result of the comparison unit is proportional to the opening degree of the second electric valve.

[0014] The present invention further includes a silencer installed on the end of the first electric valve that is connected to the main pipeline.

[0015] The present invention further includes a pressure sensor installed in the main pipe and / or the exhaust pipe; the pressure sensor is electrically connected to the second controller.

[0016] The present invention further includes an anemometer installed inside the main pipe and / or the exhaust pipe.

[0017] The beneficial effects of this utility model after adopting the above technical solution are as follows: In this utility model, the working status of multiple machine tools is collected in real time by the first controller, the number of machine tools in the production process is monitored in real time, and the collection results are judged. When the first controller judges that the collection result is less than the set value, that is, the production is not saturated, the first controller opens the first electric valve to supplement air, which can prevent the fan from surging in time, ensure the stable and efficient operation of the system, reduce unnecessary power consumption, and achieve energy saving effect. Attached Figure Description

[0018] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the first controller;

[0021] Figure 3 This is a schematic diagram of the second controller.

[0022] Explanation of reference numerals in the attached drawings: 100, fan; 200, dust collection device; 300, machine tool; 400, first electric valve; 500, first controller; 510, acquisition unit; 520, judgment unit; 530, first control unit; 600, frequency converter; 700, second controller; 710, storage unit; 720, input unit; 730, comparison unit; 740, second control unit; 800, second electric valve; 910, exhaust duct; 920, main duct. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0025] This embodiment relates to an anti-surge dust removal system, referring to... Figures 1-2The system includes: a fan 100, a dust collection device 200, a first electric valve 400, a first controller 500, and a machine tool 300. The fan 100 is connected to the outlet of the dust collection device 200 via an exhaust duct 910; the machine tool 300 is connected to the inlet of the dust collection device 200 via a main duct 920; multiple machine tools 300 are provided. One end of the first electric valve 400 is connected to the main duct 920, and the other end has a first opening for communication with the outside; the first electric valve 400 is used to supplement the gas flow; the first controller 500 is used to collect the working status of multiple machine tools 300 in real time and make real-time judgments on the collected results. The first electric valve 400, the first controller 500, and the machine tools 300 are electrically connected; when the first controller 500 determines that the collected result is less than a set value, the first controller 500 opens the first electric valve 400 to supplement the air flow. Specifically, this anti-surge dust removal system uses a first controller 500 to collect real-time data on the operating status of multiple machine tools 300. The number of machine tools 300 currently in operation is used as the data collection result. When the first controller 500 determines that the data collection result is less than a set value, indicating that production is not saturated, the first controller 500 opens the first electric valve 400 to connect to the outside environment and supplement the gas flow to prevent the fan 100 from experiencing surge. When the first controller 500 determines that the data collection result is greater than or equal to the set value, the first controller 500 closes the first electric valve 400, keeping it closed. Unlike previous anti-surge solutions that monitor the pressure and flow rate in the exhaust duct 910 and main duct 920, this anti-surge dust removal system directly determines whether to open the first electric valve 400 for supplementary air supply by judging in real-time whether the number of machine tools 300 currently in operation is less than a set value. This dynamic air supply method offers high real-time performance, significantly reduces the risk of surge in the fan 100, ensures stable and efficient system operation, and reduces additional energy consumption, achieving energy-saving effects. Furthermore, the first electric valve 400, the first controller 500, and the machine tool 300 are electrically connected. The first controller 500 directly collects the working status of the machine tool 300 and makes real-time judgments. Compared with relying on pressure sensors and flow meters, this is more in line with the actual production conditions and shortens the adjustment lag time.

[0026] Furthermore, referring to Figure 2The first controller 500 includes a data acquisition unit 510, a judgment unit 520, and a first control unit 530. The data acquisition unit 510 receives and statistically analyzes the working signals of the machine tool 300 when it is powered on. The judgment unit 520 receives and judges whether the data acquisition results output by the data acquisition unit 510 are less than a set value. The first control unit 530 controls the first electric valve 400. The first controller 500 is a PLC controller. The first controller 500, in conjunction with the first electric valve 400, realizes the process from "signal acquisition" to "result judgment" and then to "dynamic adjustment," achieving dynamic air supply to the main pipeline 920 and controlling the gas flow rate.

[0027] Furthermore, the first electric valve 400 includes a first valve and a first electric actuator mounted on the first valve. One end of the first valve is mounted on the wall of the main pipeline 920 and is connected to the main pipeline 920; the other end of the first valve has a first opening; and the first electric actuator is electrically connected to the first controller 500.

[0028] In this embodiment, the fan 100 is configured as a single-stage high-speed centrifugal fan 100. The single-stage high-speed centrifugal fan 100 has the advantages of stable operation, high speed, and energy saving. In some embodiments, the fan 100 may also be other types of centrifugal fans 100.

[0029] In this embodiment, refer to Figures 1-3This anti-surge dust removal system also includes: a frequency converter 600, a second controller 700, and a second electric valve 800. The frequency converter 600 is electrically connected to the fan 100 and is used to regulate the fan 100. One end of the second electric valve 800 is connected to the exhaust duct 910, and the other end has a second opening connecting to the outside. The frequency converter 600, the second controller 700, and the second electric valve 800 are electrically connected. The second controller 700 is used to monitor and receive the first output signal from the frequency converter 600 in real time. When the second controller 700 determines that surge has occurred, it opens the second electric valve 800 to provide supplementary air. The frequency converter 600 is a power conversion device used to adjust the speed of the fan 100 and control its operation. It achieves precise control of the fan 100 by changing the frequency and voltage of the input power supply. This anti-surge dust removal system uses a second controller 700 to monitor and receive the first output signal from the frequency converter 600 in real time, thereby judging the operating performance of the fan 100 in real time. It then determines whether surge has occurred based on the first output signal from the frequency converter 600. When the second controller 700 determines that surge has occurred, it opens the second electric valve 800 to provide supplementary air, achieving real-time response to surge conditions. By regulating the gas flow through the second electric valve 800, the system helps the fan 100 move out of the surge zone, reducing mechanical damage and performance degradation caused by surge to the fan 100 and other equipment, extending equipment lifespan, and lowering maintenance and replacement costs.

[0030] Specifically, refer to Figure 3 The second controller 700 includes a storage unit 710, an input unit 720, a comparison unit 730, and a second control unit 740. The storage unit 710 stores the second output signal historically output by the inverter 600 during surge. The input unit 720 monitors and receives the first output signal in real time. The comparison unit 730 compares the first output signal with the second output signal stored in the storage unit 710 in real time. The second control unit 740 controls the second electric valve 800. Specifically, the first output signal represents the operating data of the inverter 600 regulating the fan 100 during operation, including: fan 100 speed, regulated power, regulated current, and regulated voltage. The second output signal represents relevant data on the operation of the fan 100 during surge (including data controlled by the frequency converter 600 during surge). The storage unit 710 stores the relevant data of the second output signal to form a surge boundary database. The input unit 720 monitors and receives the first output signal in real time. The comparison unit 730 compares the first output signal with the second output signal in the storage unit 710 in real time, i.e., it determines in real time whether the fan 100 has experienced surge. When surge occurs, the second electric valve 800 is opened by the second control unit 740 to provide supplementary air. When the second controller 700 determines that no surge has occurred, the second control unit 740 controls the second electric valve 800 to be closed.

[0031] Further, the second electric valve 800 includes: a second valve and a second electric actuator disposed on the second valve. One end of the second valve is disposed on the wall of the exhaust duct 910 and communicates with the exhaust duct 910; the other end of the second valve has a second opening; the second electric actuator is electrically connected to the second controller 700. The second electric actuator can precisely control the opening degree of the second valve, so as to accurately control the opening degree according to the surge condition. In this embodiment, the comparison result of the comparison unit 730 is proportional to the opening degree of the second electric valve 800. In this embodiment, the comparison unit 730 compares the first output signal with the second output signal, that is, it compares the real-time collected operating data with the data in the surge boundary database in real time. The terminal control device fits the comparison result of the comparison unit 730 with the valve opening degree in the second electric valve 800 into a proportional relationship. In this way, the second controller 700 can accurately control the valve opening degree in the second electric valve 800 through the comparison result, so as to solve the surge problem by finding the minimum second valve opening degree and achieving the minimum supplementary air volume, which is beneficial to energy saving and system stability.

[0032] In some embodiments, a silencer (not shown in the accompanying drawings) is provided at the end of the first electric valve 400 connected to the main pipe 920 to reduce production noise. In some embodiments, a silencer is also provided at the end of the second electric valve 800 connected to the exhaust pipe 910.

[0033] Furthermore, a pressure sensor (not shown in the attached drawings) is installed in the main duct 920 and / or the exhaust duct 910; the pressure sensor is electrically connected to the second controller 700. In this embodiment, pressure sensors are installed in the main duct 920 and the exhaust duct 910 to detect the pressure within the main duct 920, reflecting whether surge has occurred and the extent of surge. In some embodiments, a pressure sensor is installed in the main duct 920 or the exhaust duct 910.

[0034] Furthermore, an anemometer (not shown in the attached figure) is installed in the main duct 920 and / or the exhaust duct 910 to measure the flow velocity within the duct. In this embodiment, an anemometer is installed in both the main duct 920 and the exhaust duct 910. In some embodiments, an anemometer is installed in either the main duct 920 or the exhaust duct 910.

[0035] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A surge-resistant dust removal system, characterized in that, include: A fan (100), a dust collection device (200), a first electric valve (400), a first controller (500), and a machine tool (300); The fan (100) is connected to the outlet of the dust collection device (200) through an exhaust pipe (910); the machine tool (300) is connected to the inlet of the dust collection device (200) through a main pipe (920); multiple machine tools (300) are provided; one end of the first electric valve (400) is connected to the main pipe (920), and the other end has a first opening for communication with the outside; the first electric valve (400) is used to supplement the gas flow; the first controller (500) is used to collect the working status of multiple machine tools (300) in real time and make real-time judgments on the collection results; the first electric valve (400), the first controller (500) and the machine tools (300) are electrically connected; When the first controller (500) determines that the collected result is less than the set value, the first controller (500) opens the first electric valve (400) to make up for the air.

2. The anti-surge dust removal system according to claim 1, characterized in that, The first controller (500) includes: an acquisition unit (510) for receiving the working signal of the machine tool (300) in the power-on state in real time and performing statistics on the working signal; a judgment unit (520) for receiving and judging whether the acquisition result output by the acquisition unit (510) is less than a set value in real time; and a first control unit (530) for controlling the first electric valve (400).

3. The anti-surge dust removal system according to claim 2, characterized in that, The fan (100) is configured as a single-stage high-speed centrifugal fan (100).

4. The anti-surge dust removal system according to claim 2, characterized in that, The anti-surge dust removal system further includes: a frequency converter (600) electrically connected to the fan (100) and used to control the fan (100); a second controller (700); and a second electric valve (800) with one end connected to the exhaust duct (910) and the other end having a second opening connected to the outside; the frequency converter (600), the second controller (700), and the second electric valve (800) are electrically connected; The second controller (700) is used to monitor and receive the first output signal of the frequency converter (600) in real time; when the second controller (700) determines that surge has occurred, the second controller (700) opens the second electric valve (800) to provide supplementary air.

5. The anti-surge dust removal system according to claim 4, characterized in that, The second controller (700) includes: a storage unit (710) storing the second output signal historically output by the inverter (600) when surge occurs; an input unit (720) for real-time monitoring and receiving the first output signal; a comparison unit (730) for real-time comparison of the first output signal with the second output signal in the storage unit (710); and a second control unit (740) for controlling the second electric valve (800).

6. The anti-surge dust removal system according to claim 4, characterized in that, The second electric valve (800) includes: a second valve and a second electric actuator disposed on the second valve; one end of the second valve is disposed on the wall of the exhaust duct (910) and communicates with the exhaust duct (910); the other end of the second valve is provided with the second opening; the second electric actuator is electrically connected to the second controller (700).

7. The anti-surge dust removal system according to claim 5, characterized in that, The size of the comparison result of the comparison unit (730) is proportional to the opening degree of the second electric valve (800).

8. The anti-surge dust removal system according to claim 1, characterized in that, A silencer is provided on the end of the first electric valve (400) that is connected to the main pipeline (920).

9. The anti-surge dust removal system according to claim 4, characterized in that, Pressure sensors are installed in the main pipe (920) and / or the exhaust pipe (910); the pressure sensors are electrically connected to the second controller (700).

10. The anti-surge dust removal system according to claim 1, characterized in that, An anemometer is installed in the main duct (920) and / or the exhaust duct (910).

Images