Dust extraction system

Abstract

The application provides a dust collection system, relates to the technical field of dust removal, and aims to solve the technical problem that the existing dust collection system is prone to dust blockage and has a high failure rate. The dust collection system comprises a dust collection assembly and a control system connected through a pipeline. The dust collection assembly comprises a dust collection device, a discharging device and a storage device connected in sequence, and the dust collection device and the discharging device are connected through the pipeline. The control system comprises a controller, a driving device and a power assembly connected through a circuit. The discharging device is connected with an alarm device. The discharging device comprises a cylinder, a valve assembly and a sensing device. The cylinder controls the opening and closing of the valve assembly through the movement of a piston. The sensing device is located on the movement track of the piston of the cylinder and is used for converting the distance relative to the cylinder into an electric signal. The application provides an abnormal alarm when dust blocks the dust collection pipeline, reduces the number of times of dust blockage of the dust collection pipeline and reduces the failure rate of the dust collection system.

Description

TECHNICAL FIELD

[0001] The present application relates to the dust removal technical field, especially to a dust suction system. BACKGROUND

[0002] In the production process of printed circuit boards (PCB), a drilling process is included, wherein the required equipment includes a drilling device, i.e., a drill machine, and the cleaning of the drill machine is a necessary condition for ensuring the smooth operation thereof, and a dust suction system is generally used to clean the drill machine, so that the dust suction system becomes an important component for ensuring the normal operation of the drilling process.

[0003] People can flexibly operate the dust suction system for dust removal work without time limit in combination with the dust collection conditions of the environment and equipment, and the dust suction system includes a dust suction host, a control cabinet and a dust suction pipeline, and the stable cooperation of the above-mentioned equipment and components ensures the cleaning of the production workshop environment and the normal operation of the production equipment including the drill machine.

[0004] However, the dust suction system has design defects, and dust blockage phenomenon is prone to occur in the dust suction system, and the failure rate is high. SUMMARY

[0005] In view of the problem that the dust collection system is prone to dust blockage phenomenon and has a high failure rate, the present application provides a dust suction system for reducing the failure rate of the dust suction system and providing an alarm function in the case of dust blockage.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] The present application provides a dust suction system, which includes a dust suction assembly and a control system connected through a pipeline; the dust suction assembly includes a dust collection device, a discharge device and a storage device connected in sequence, and the dust collection device and the discharge device are connected through a pipeline; the control system includes a controller, a driving device and a power assembly connected by a circuit; the discharge device is connected with an alarm device, and the discharge device includes a cylinder, a valve assembly and a sensing device, the movement of the piston of the cylinder is used to control the opening and closing of the valve assembly, and the sensing device is located on the movement track of the piston of the cylinder, and is used to convert the distance relative to the cylinder into an electrical signal;

[0008] The controller is used to receive the power supplied by the power supply assembly to control the driving device to extract the gas in the pipeline to form a negative pressure in the pipeline, so that the dust collecting device collects the dust from the suction equipment and discharges the dust into the storage device through the unloading device, and when the unloading device is blocked by dust, the distance between the cylinder and the sensing device is not equal to the preset value, the sensing device transmits an electric signal to trigger the alarm device to alarm.

[0009] The technical solution provided by the present application has at least the following beneficial effects:

[0010] The driving device controlled by the controller in the dust collection system forms a negative pressure in the dust collection pipeline, which is smaller than the external environment. The dust on the dust removal equipment is sucked into the dust collecting device through the pipeline by the negative pressure and then enters the unloading device and the storage device in turn, and finally is removed from the dust collection system by the staff. The stable cooperation of each device not only can efficiently remove dust from production equipment such as drilling machines, but also can reduce the frequency of shutdown caused by dust blocking the dust collection pipeline due to fatigue failure of the dust collection system running for a long time and insufficient monitoring by the staff, so as to prompt the staff to repair and restore the function of the dust collection system at the first time after receiving the alarm, and improve the production efficiency and product yield.

[0011] In summary, when the dust blocks the dust collection pipeline, an abnormal alarm can be issued to reduce the number of dust blocking the dust collection pipeline and reduce the failure rate of the dusted equipment (such as drilling machine) due to insufficient dust collection negative pressure.

[0012] In the above-mentioned dust collection system, optionally, the sensing device is a proximity sensor, and the proximity sensor is located near the outer dead point of the piston movement of the cylinder.

[0013] In the above-mentioned dust collection system, optionally, the proximity sensor is provided with a normally closed contact, and when the distance between the cylinder and the sensing device is not equal to the preset value, the normally closed contact remains closed to transmit an electric signal to trigger the alarm device to alarm.

[0014] In the above-mentioned dust collection system, optionally, the dust collecting device is provided with a gas discharger, which is in communication with the inside of the dust collecting device and is used to blow the dust to the unloading device.

[0015] In the above-mentioned dust collection system, optionally, the gas discharger is a pulse electromagnetic valve, and the pulse electromagnetic valve is located at the top of the end of the dust collecting device away from the unloading device.

[0016] In the dust collection system, optionally, the valve assembly comprises a first discharge valve and a second discharge valve connected by a collecting bin, the first discharge valve is communicated with the dust collecting device, and the second discharge valve is communicated with the storage device.

[0017] In the dust collection system, optionally, the discharge device is a pulse electromagnetic valve discharger.

[0018] In the dust collection system, optionally, the alarm device is an audible and visual alarm.

[0019] In the dust collection system, optionally, the power supply assembly comprises a time pulse delay relay and a switching power supply connected by a circuit, an external power supply is connected to the switching power supply by a circuit, and the switching power supply is used to convert the voltage from the external power supply.

[0020] In the dust collection system, optionally, the dust collecting device is a dust collecting tower, the driving device is an electric motor, the storage device is a storage bag, and the controller comprises a frequency converter and a programmable logic controller connected by a circuit. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 The dust collection system layout structure schematic diagram provided by the embodiment of the present application.

[0023] Mark explanation:

[0024] 1-drilling equipment; 2-pipe;

[0025] 3-dust collecting tower; 4-first discharge valve;

[0026] 5-second discharge valve; 6-storage bag;

[0027] 7-alarm device; 8-electric motor;

[0028] 9-pulse electromagnetic valve. DETAILED DESCRIPTION

[0029] As described in the background, in the related art, the dust in the dust collection system that is sucked into the dust collecting device through the pipe has the characteristics of fast falling speed and concentration, which is easy to form large volume dust and cause internal blockage of the system, and there is a problem of low dust collection efficiency.

[0030] The inventor has found that the main reason for the problem is that, in industrial production, in order to ensure production efficiency, the dust collection system has to be operated for a long time, and as a result, the equipment in the dust collection system will be tired and abnormal, and the dust collection device is provided in the dust collection system, and the dust often accumulates and blocks in the dust collection device, thereby causing the cylinder in the unloading device connected with the dust collection device to be stuck, so that the cylinder cannot normally move the piston to start the unloading valve, and thus cannot normally complete unloading, that is, cannot normally discharge the dust and impurities absorbed from the production equipment, thereby increasing the maintenance cost of the dust collection system.

[0031] In addition, after the dust collection system is once abnormally blocked by dust and impurities, even after the repair work is completed, the dust collection system is prone to secondary failure, mainly because the unloading valve for controlling the opening and closing of the unloading device in the dust collection system will be abnormal after the first failure, and will always be in an open state, and as the dust collection system continues to operate, the always-open unloading valve causes the negative pressure for dust collection inside the dust collection system to be insufficient, which cannot fully and effectively collect dust and also causes the dust collection system to fail again.

[0032] That is, when dust is blocked in the pipeline in the dust collection system, for example, the dust collection system includes a dust collection device and an unloading device connected to the dust collection device through a pipeline, when dust is blocked in the connecting pipeline between the two, it will cause the unloading valve in the unloading device to be stuck, thereby causing the piston of the cylinder for controlling the opening and closing of the unloading valve to stop moving, and further causing the unloading valve to be abnormally closed, to keep connected with the external environment, to cause insufficient negative pressure power for dust collection inside the dust collection system, and to reduce the dust collection efficiency.

[0033] To solve the above technical problems, the dust collection system provided by the embodiment of the present application can form a negative pressure smaller than the external environment in the dust collection pipeline through the driving device controlled by the controller in the dust collection system, use the negative pressure to suck the dust on the dust removal equipment into the dust collection device through the pipeline and into the unloading device and the storage device in turn, and finally be removed from the system by the worker, and the stable cooperation of each device can efficiently remove dust from various production equipment.

[0034] On the other hand, the alarm device additionally provided on the unloading device can also reduce the frequency of machine stop caused by dust blocking in the dust collection pipeline due to fatigue failure of the dust collection system caused by long-term operation and failure of the worker to monitor, and prompt the relevant personnel to receive the alarm and perform repair and function recovery work on the dust collection system at the first time, thereby improving the industrial production efficiency and product yield.

[0035] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] As shown in Figure 1 The dust collection system provided by the embodiments of the present application comprises a dust suction assembly and a control system connected through a pipeline 2. The dust suction assembly comprises a dust collection device, a discharging device and a storage device connected in sequence, and the dust collection device is connected with the discharging device through the pipeline 2. The control system comprises a controller, a driving device and a power assembly connected by an electric circuit. The discharging device is connected with an alarm device 7. The discharging device comprises a cylinder, a valve assembly and a sensing device. The cylinder controls the opening and closing of the valve assembly through the movement of a piston. The sensing device is located on the movement track of the piston of the cylinder and is used to convert the distance relative to the cylinder into an electric signal.

[0037] The controller is used to receive the power supplied by the power assembly to control the driving device to extract the gas in the pipeline 2 to form a negative pressure in the pipeline 2, so that the dust collection device collects the dust from the equipment to be sucked and discharges the dust into the storage device through the discharging device. When the discharging device is blocked by the dust so that the distance between the cylinder and the sensing device is not equal to a preset value, the sensing device transmits an electric signal to trigger the alarm device 7 to alarm.

[0038] In this way, the stable cooperation of various devices in the dust suction system of the embodiments of the present application can not only efficiently remove dust from various production equipment, but also reduce the frequency of shutdown caused by the dust blocking the dust suction pipeline 2 due to fatigue failure of the long-term operation of the dust suction system and the failure of the staff to monitor the dust suction pipeline 2. The staff can repair and restore the function of the dust suction system at the first time after receiving the alarm, thereby improving the production efficiency and product yield.

[0039] It should be noted that the above-mentioned discharging device is a pneumatic discharging device, which uses a cylinder as an actuator to realize the opening and closing action of the medium in the pipeline 2 and the valve through the linear movement of the piston of the cylinder, so as to achieve the automatic opening or closing action of the pipeline 2 or the valve.

[0040] Further, the sensing device is a proximity sensor. The proximity sensor is located close to the outer dead point of the movement of the piston of the cylinder.

[0041] In this way, the movement of the cylinder piston is detected by the non-contact sensor, ensuring detection accuracy, avoiding wear between the sensor and the cylinder piston, and reducing the influence of environmental parameters such as temperature.

[0042] It should be noted that the proximity sensor is a non-contact detection method instead of a limit switch. The sensor can detect the movement information and presence information of the object and convert it into an electrical signal.

[0043] Further, the proximity sensor is provided with a normally closed contact. When the distance between the cylinder and the sensor is not equal to the preset value, the normally closed contact remains closed to transmit an electrical signal to trigger the alarm device 7 to alarm. Through the above structure design, the normally closed contact structure is arranged in the proximity sensor to better realize the switching control function of the alarm signal transmission.

[0044] Generally, the cylinder in the unloading device moves the piston to stably control the valve assembly to open and close to guide the dust accumulated in the dust collecting device. When the proximity sensor at the outer dead point of the piston detects that the single stroke movement of the piston is continuously approaching itself, the unloading device is in normal working state, and the normally closed contact in the proximity sensor is disconnected, and the electrical signal triggering the alarm is not sent to the alarm device 7.

[0045] Conversely, when the proximity sensor detects that the piston movement is not in place, i.e. the piston movement does not reach the preset distance from the proximity sensor, the cylinder piston is abnormal, such as being blocked by dust. The normally closed contact remains closed, and the conducting circuit sends an electrical signal to trigger the alarm device 7 to alarm, so that the staff can timely obtain the fault information of the dust collection system, and facilitate detection and repair work.

[0046] Exemplarily, the type of the proximity sensor can be an inductive proximity sensor, a capacitive proximity sensor, a photoelectric proximity sensor, or an ultrasonic proximity sensor.

[0047] In some possible embodiments, the dust collecting device is provided with a gas discharger. The gas discharger blows off the dust or impurities blocked in the dust collecting device to the unloading device by continuously blowing off gas, thereby significantly improving the dust removal efficiency.

[0048] Preferably, as shown in Figure 1 The gas discharger is a pulse electromagnetic valve 9, which is located at the top of the end of the dust collecting device away from the unloading device.

[0049] The design of the pulse solenoid valve 9 as a gas exhaust device saves space compared to general exhaust devices and improves the space utilization of the dust collection device. Moreover, by utilizing the peak pressure formed by pulse blowing, the device can meet the blowing force requirements for dust and impurities while significantly reducing air consumption, further improving blowing efficiency and energy utilization.

[0050] In addition, by placing the pulse solenoid valve 9 at the top of the end of the dust collection device away from the unloading device, the blowing range can be maximized. This not only blows away the dust blocking the lower and middle parts of the dust collection device in the vertical direction, as well as the top and side walls of the unloading device, but also removes the dust remaining on the connecting pipe 2 between the suction device and the dust collection device, and the debris on the upper side walls of the dust collection device. At the same time, it also prevents dust from entering the connecting pipe 2 between the dust collection device and the motor 8, thus avoiding damage to the drive device from the dust.

[0051] The valve assembly includes a first discharge valve 4 and a second discharge valve 5 connected through a collection bin. The first discharge valve 4 is connected to a dust collection device, and the second discharge valve 5 is connected to a storage device.

[0052] The first and second discharge valves are set vertically and connected to the dust collection device and the storage device respectively. The two discharge valves are connected by a collection bin. This effectively controls the dust from the collection device in stages and provides a good transition and buffer for a large amount of dust. Compared with the structure where the two ends of a single valve are connected to the dust collection device and the storage device respectively, the probability of dust blockage is significantly reduced.

[0053] Furthermore, the dust collection device is a dust collection tower 3; the drive device is a motor 8; the storage device is a storage bag 6; the controller includes a frequency converter and a programmable logic controller (PLC) connected by circuits; and the unloading device is a pulse solenoid valve unloader.

[0054] In this way, combined Figure 1 The motor 8, controlled by the frequency converter and the programmable logic controller, generates negative pressure in the dust collection pipe 2, thereby drawing the dust generated by the drilling equipment 1 through the pipe 2 into the dust collection tower 3. Then, the first unloading valve 4 below the dust collection tower 3 is energized and closed after a preset pulse countdown, for example, a countdown time of 60 seconds. The cylinder in the unloading device opens, and the dust falls from the pipe 2 connected to the dust collection device into the first unloading valve 4.

[0055] Similarly, the second discharge valve 5 is also turned on by the circuit after the countdown reaches the preset pulse time, and the dust finally falls into the dust collection bag located below it through the second discharge valve 5, which is convenient for the staff to clean up.

[0056] In addition, the selection of the pulse electromagnetic valve unloader also gives the unloading device the unique characteristic of being directly connected with the motor in one body, and has the advantages of light weight and compact structure; moreover, the pulse electromagnetic valve unloader has strong overload capacity, small impact inertia moment, high operation stability under frequent starting, low failure rate and long service life, and is well adapted to the continuous unloading function requirement of the dust collection system.

[0057] In some embodiments, the alarm device 7 is an audible and light alarm, so that the alarm device 7 can emit a high-brightness optical alarm signal and has loud acoustic alarm capability, and the alarm tone can be adjusted according to the application area of the dust collection system; in addition, the audible and light alarm has the characteristics of small size and light weight, which is beneficial to installation.

[0058] As a possible implementation manner, the power supply assembly includes a time pulse delay relay and a switching power supply connected by a circuit, and an external power supply is connected to the switching power supply by a circuit, and the switching power supply is used to convert the voltage from the external power supply; the delay relay is an electronic delay relay, which is implemented by an electronic circuit; the switching power supply can be a 24V switching power supply, and the external power supply can be a direct current power supply or an alternating current power supply.

[0059] In this way, in the power supply assembly composed of the time pulse delay relay and the switching power supply, the delay relay not only can protect the dust collection system circuit, but also can freely adjust the delay time according to the user's needs, thereby improving the power supply flexibility of the power supply assembly.

[0060] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0061] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0065] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dust extraction system characterised in that, The dust collection assembly and the control system are connected by a pipeline; the dust collection assembly comprises a dust collecting device, a discharging device and a storage device connected in sequence, and the dust collecting device and the discharging device are connected by a pipeline; the control system comprises a controller, a driving device and a power supply assembly connected by a circuit; the discharging device is connected with an alarm device; the discharging device comprises a cylinder, a valve assembly and a sensing device; the cylinder controls the opening and closing of the valve assembly through the movement of a piston; the sensing device is located on the movement track of the piston of the cylinder and is used for converting the distance between the sensing device and the piston of the cylinder into an electric signal. The controller is used for receiving the power supplied by the power supply assembly to control the driving device to extract the gas in the pipeline to form a negative pressure in the pipeline, so that the dust collecting device collects the dust from the equipment to be sucked and discharges the dust to the storage device through the discharging device; when the discharging device is blocked by the dust, the distance between the piston of the cylinder and the sensing device is not equal to a preset value, the sensing device transmits an electric signal to trigger the alarm device to alarm. The sensing device is a proximity sensor, which is located near the outer dead point of the piston movement. The proximity sensor is provided with a normally closed contact; when the proximity sensor located at the outer dead point of the piston detects that the single stroke movement of the piston is continuously close to itself, the working state of the discharging device is normal, the normally closed contact in the proximity sensor is disconnected, and the proximity sensor does not send an electric signal to trigger the alarm device to alarm. When the distance between the piston of the cylinder and the sensing device is not equal to a preset value, the normally closed contact remains closed to transmit an electric signal to trigger the alarm device to alarm. The valve assembly comprises a first discharging valve and a second discharging valve connected by a material collecting bin; the first discharging valve is communicated with the dust collecting device; and the second discharging valve is communicated with the storage device.

2. The dust extraction system of claim 1, wherein, The dust collecting device is provided with a gas discharger communicated with the inside of the dust collecting device and used for blowing dust to the discharging device.

3. The dust extraction system of claim 2, wherein, The gas discharger is a pulse electromagnetic valve located at the top of the end of the dust collecting device away from the discharging device.

4. The dust extraction system of claim 1, wherein, The discharging device is a pulse electromagnetic valve discharger.

5. The dust extraction system of claim 1, wherein, The alarm device is an audible and visual alarm.

6. The dust extraction system of claim 1, wherein, The power supply assembly comprises a time pulse delay relay and a switching power supply connected by a circuit; the switching power supply is connected with an external power source by a circuit; and the switching power supply is used for converting the voltage from the external power source.

7. The dust extraction system of any of claims 1-6, wherein, The dust collecting device is a dust collecting tower; the driving device is a motor; the storage device is a storage bag; and the controller comprises a frequency converter and a programmable logic controller connected by a circuit.

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