Dust removal control method and system for abrasive machining industry

Abstract

The invention relates to the technical field of dust removal, in particular to an abrasive machining industry dust removal control method and system. The method comprises the steps that air parameters are obtained and input into a preset prediction model to obtain the ideal rotating speed of a draught fan and the ideal water spraying amount of a water sprayer; adjusting the rotating speed of the fan to an ideal rotating speed and the water spraying amount of the water sprayer to an ideal water spraying amount; in response to the fact that the rotating speed of part of fans is smaller than the ideal rotating speed and / or the water spraying amount of part of water sprayers is smaller than the ideal water spraying amount, the rotating speed of the remaining fans is adjusted to the optimal rotating speed, and the water spraying amount of the remaining water sprayers is adjusted to the optimal water spraying amount. According to the scheme, the rotating speed of the intact draught fan can be adjusted to the optimal rotating speed, the water spraying amount of the intact water sprayer can be adjusted to the optimal water spraying amount, and therefore normal dust removal of the workshop is achieved on the premise that the intact draught fan and the intact water sprayer are not stopped, and the working efficiency of workshop dust removal is improved.

Description

Technical Field

[0001] The present invention generally relates to the field of dust removal technology. More specifically, the present invention relates to a method and system for controlling dust removal in an abrasive processing industry. Background Art

[0002] Abrasives and grinding tools are the teeth of industry and are widely used in equipment manufacturing, mechanical processing, steel, electrical engineering, construction and other industries. Due to the process flow, abrasives and grinding tools will generate a lot of dust during the production process, which is quite polluting. As high-quality abrasives, the production process of brown corundum and white corundum has to go through smelting, crushing, grinding, screening and bagging, pickling, drying and other steps. During the processing, a lot of dust will be generated in the process workshop, which not only affects the normal operation of the equipment, but also causes damage to the health of workers. Therefore, dust removal is required in the workshop.

[0003] A Chinese patent application document with publication number CN214345271U discloses a water mist dust removal device for dust in a production workshop, comprising a support rod, a conveying channel is arranged inside the support rod, a sealing ring is fixedly installed on the outer side of the support rod, a water outlet is opened on the support rod, an outer protective sleeve is slidably connected to the outer sides of two sealing rings, an extension pipe is arranged on the outer protective sleeve, a nozzle is fixedly installed on the extension pipe, the conveying channel is connected to a water delivery component through a conduit, a driving component for driving the outer protective sleeve to rotate is arranged on the support rod, and the driving component includes a connecting sleeve rotatably connected to the support rod.

[0004] In the prior art, the purpose of dust removal can also be achieved by installing a fan to exhaust the air in the workshop or by combining fan dust removal with water mist dust removal. Multiple water sprinklers and multiple fans are installed in the workshop, and the water sprinklers and fans work together to achieve a good dust removal effect.

[0005] However, in actual applications, when some of the fans or some of the water sprayers fail, the dust removal effect will be poor. How to ensure that the remaining fans and water sprayers can achieve the normal dust removal effect in the workshop when some of the fans or some of the water sprayers fail and stop is a problem that needs to be solved now. Summary of the invention

[0006] The present invention proposes a dust removal control method and system for abrasive processing industry, which is used to solve the problem in the prior art that when some fans and some sprinklers fail and stop, the remaining fans and sprinklers can still achieve normal dust removal effect in the workshop. To this end, the present invention provides solutions in the following two aspects.

[0007] In a first aspect, the present invention provides a method for controlling dust removal in an abrasive processing industry, comprising the following steps: Obtain air parameters and input them into a preset prediction model to obtain the ideal speed of the fan and the ideal water spray volume of the sprinkler; Adjust the fan speed to the ideal speed and adjust the water spray volume of the sprinkler to the ideal water spray volume; In response to the rotation speed of some fans being less than the ideal rotation speed and / or the water spraying amount of some sprinklers being less than the ideal water spraying amount, adjusting the rotation speed of the remaining fans to the optimal rotation speed and adjusting the water spraying amount of the remaining sprinklers to the optimal water spraying amount; The method of adjusting the speed of the fan to the optimal speed and / or adjusting the water spraying amount of the sprinkler to the optimal water spraying amount is as follows: Calculate the change in dust concentration caused by fans and sprinklers, and the change is positively correlated with dust concentration; The theoretical speed of the fan is obtained according to the pre-drawn dust concentration change curve of the fan and the dust concentration change amount, and the theoretical water spraying amount of the sprinkler is obtained according to the pre-drawn dust concentration change curve of the sprinkler and the dust concentration change amount; Calculate the optimal speed of the fan and the optimal water spray volume of the sprinkler. The optimal speed is positively correlated with the theoretical speed, and the optimal water spray volume is positively correlated with the theoretical water spray volume.

[0008] The effect is that when some fans or sprinklers in the workshop fail to work properly, by adjusting the speed of the remaining fans to the optimal speed or adjusting the water spraying volume of the remaining sprinklers to the optimal water spraying volume, continuous and normal dust removal in the workshop can be achieved, thereby improving the dust removal effect.

[0009] Preferably, the expression for the change in dust concentration caused by the fan and sprinkler is:

[0010]

[0011] In the formula, Indicates the change in dust concentration caused by a single fan. Indicates the change in dust concentration caused by a single sprinkler. Indicates the total dust concentration that needs to be reduced. Indicates the average value of dust concentration at the fan end, Indicates the average dust concentration at the sprinkler end, , are the proportions of large and small particles in dust, respectively.

[0012] The effect is that the above formula can be used to calculate the change in dust concentration caused by a single fan and the change in dust concentration caused by a single sprinkler, thereby improving the accuracy of the calculation results.

[0013] Preferably, the particle size of the dust particles is obtained, and the dust particles with a particle size greater than a preset threshold are regarded as large particles, and vice versa.

[0014] Preferably, the calculation method of the optimal rotation speed and the optimal water spraying amount is:

[0015]

[0016] in, Indicates the optimal speed of a single fan. Indicates the theoretical speed of a single fan. represents the optimal water spraying amount of a single sprinkler, Indicates the theoretical water spray volume of a single fan. , Indicates the corresponding compensation coefficient.

[0017] The effect is that the theoretical rotation speed of the fan and the theoretical water spraying volume of the sprinkler are corrected by introducing a compensation coefficient, thereby improving the dust removal effect of the workshop.

[0018] Preferably, the expression of the compensation coefficient is:

[0019] in, is the total number of fans, is the number of remaining fans that can operate normally, express When all fans are working normally and at the theoretical speed, the dust concentration can be reduced. It indicates the dust concentration that can be reduced when n fans are operating normally and at the theoretical speed.

[0020] The effect is that the compensation coefficient can be accurately calculated through the formula, which improves the accuracy of the compensation coefficient and further increases the accuracy of the theoretical speed of a single fan.

[0021] Preferably, the method for drawing the fan dust concentration change curve is: Obtain the change in dust concentration caused by all fans at different speeds; The ratio of the change in dust concentration to the number of fans is taken as the change in dust concentration caused by a single fan at the speed condition; A rectangular coordinate system is constructed with the rotation speed as the horizontal axis and the change in dust concentration as the vertical axis; The data points are plotted in a rectangular coordinate system and connected to obtain the fan dust concentration change curve. The effect is that by drawing the dust concentration change curve, the relationship between the dust concentration and the fan speed can be obtained through the curve, and during the adjustment process, the theoretical speed of the fan can be easily found.

[0022] Preferably, the air parameters include air humidity, air temperature and dust concentration in the air.

[0023] In a second aspect, the present invention also provides an abrasive processing industrial dust removal control system, comprising: processor; The memory stores computer instructions for dust removal control in the abrasive processing industry. When the computer instructions are executed by the processor, the system executes the above-mentioned dust removal control method in the abrasive processing industry.

[0024] The beneficial effects of the present invention are: According to the solution of the present invention, when the rotation speed of some fans is lower than the ideal rotation speed or the water spraying amount of some sprinklers is lower than the ideal water spraying amount, it indicates that the corresponding fans or sprinklers are faulty. At this time, by adjusting the rotation speed of the intact fans to the optimal rotation speed and adjusting the water spraying amount of the intact sprinklers to the optimal water spraying amount, the intact fans and sprinklers can be used to achieve normal dust removal in the workshop without stopping the machine, thereby improving the dust removal work efficiency in the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 The step flow chart of the abrasive processing industrial dust removal control method in this embodiment is schematically shown; Figure 2 The structural block diagram of the dust removal control system for the abrasive processing industry in this embodiment is schematically shown. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. The specific implementation methods of the present invention are described in detail in combination with the drawings.

[0027] The present invention aims at the problem that when performing abnormal warning of current data of photovoltaic power station, the collected current data may contain noise and interference, which may cause inaccuracy in the subsequent abnormal warning detection process. Therefore, an abrasive processing industrial dust removal control method and system are proposed, that is, the collected current data is denoised in advance, and the abnormal data can be more accurately identified in the subsequent abnormal detection to achieve safety warning of photovoltaic power station.

[0028] Figure 1 The step flow chart of the dust removal control method for the abrasive processing industry in this embodiment is schematically shown.

[0029] The invention is used for dust removal in brown corundum and white corundum processing workshops. Dust is generated in real time in the processing workshops, so dust removal needs to be continuously performed in the workshops.

[0030] Specifically, Figure 1 As shown, the dust removal control method for abrasive processing industry in this embodiment includes the following steps: S1: Obtain air parameters and input them into a preset prediction model to obtain the ideal speed of the fan and the ideal water spray volume of the sprinkler.

[0031] A multi-task learning model is constructed and trained using air parameters to obtain a prediction model. The input of the prediction model is the air parameters, and the output is the ideal speed of the fan and the ideal water spray volume of the sprinkler. The air parameters include air humidity, air temperature, and dust concentration in the air. When the speed of all fans is the ideal speed and the water spray volume of all sprinklers is the ideal water spray volume, the dust removal effect in the workshop is optimal.

[0032] S2: Adjust the speed of the fan to the ideal speed and adjust the water spray volume of the sprinkler to the ideal water spray volume.

[0033] The PLC controller is used to adjust the fan speed to reach the predicted ideal fan speed, and the water spray volume of the sprinkler is adjusted to reach the ideal water spray volume.

[0034] S3: In response to the rotation speed of some fans being lower than the ideal rotation speed and / or the water spraying amount of some sprinklers being lower than the ideal water spraying amount, the rotation speed of the remaining fans is adjusted to the optimal rotation speed and the water spraying amount of the remaining sprinklers is adjusted to the optimal water spraying amount.

[0035] When the speed of some fans among all fans is lower than the ideal speed, it means that the fan is faulty. Similarly, when the water spray volume of some sprinklers among all sprinklers is less than the ideal water spray volume, it means that the sprinkler is faulty. Therefore, the faulty fans and the faulty sprinklers need to be shut down. The remaining fans at the ideal speed and the remaining sprinklers at the ideal water spray volume can no longer meet the actual dust removal needs of the workshop. Therefore, the speed of the remaining fans and the water spray volume of the remaining sprinklers need to be adjusted.

[0036] The method of adjusting the speed of the fan to the optimal speed and / or adjusting the water spraying amount of the sprinkler to the optimal water spraying amount is: S31: Calculate the change in dust concentration caused by fans and sprinklers, and the change is positively correlated with the dust concentration.

[0037] The expression for the change in dust concentration caused by fans and sprinklers is:

[0038]

[0039] In the formula, Indicates the change in dust concentration caused by a single fan. Indicates the change in dust concentration caused by a single sprinkler. Indicates the total dust concentration that needs to be reduced. Indicates the average value of dust concentration at the fan end, Indicates the average dust concentration at the sprinkler end, , It should be noted that the size and distribution of dust particles are measured using a laser particle counter, and dust particles with a particle size greater than a preset threshold are considered large particles, and those with a particle size less than a preset threshold are considered small particles. For example, the threshold is 2.5 The change in dust concentration can be understood as the dust removal amount of the fan or sprinkler. For example, in the initial state, the dust concentration in the air is a, and then the fan is used for dust removal, and the dust concentration in the air is b, then the change in dust concentration is ab.

[0040] S32: Draw the fan dust concentration change curve and the sprinkler dust concentration change curve.

[0041] Obtain the change in dust concentration caused by all fans at different speeds; take the ratio of the change in dust concentration to the number of fans as the change in dust concentration caused by a single fan at the speed; construct a rectangular coordinate system with the speed as the horizontal axis and the change in dust concentration as the vertical axis; plot data points in the rectangular coordinate system, and connect the data points to obtain the fan dust concentration change curve. Similarly, the sprinkler dust concentration change curve can be obtained.

[0042] S32: Obtain the theoretical rotation speed of the fan according to the drawn dust concentration change curve of the fan and the amount of dust concentration change, and obtain the theoretical water spraying amount of the sprinkler according to the pre-drawn dust concentration change curve of the sprinkler and the amount of dust concentration change.

[0043] Based on the calculated change in dust concentration caused by the fan, the fan concentration change curve can be found to obtain the fan's theoretical speed. Similarly, based on the calculated change in dust concentration caused by the sprinkler, the sprinkler dust concentration change curve can be found to obtain the sprinkler's theoretical water spraying volume.

[0044] S33: Calculate the optimal rotation speed of the fan and the optimal water spraying volume of the sprinkler. The optimal rotation speed is positively correlated with the theoretical rotation speed, and the optimal water spraying volume is positively correlated with the theoretical water spraying volume.

[0045] When different numbers of fans work at the same speed, the final effect produced by a single fan will be different. Since the effect and quantity do not increase linearly, a compensation coefficient σ needs to be introduced to reduce the difference in dust removal effect of a single fan caused by the number of fans.

[0046] The expression of compensation coefficient is: ;in, is the total number of fans, is the number of remaining fans that can operate normally, express When all fans are working normally and at the theoretical speed, the dust concentration can be reduced. It indicates the dust concentration that can be reduced when n fans are working normally and at the theoretical speed. Similarly, the compensation coefficient of the sprinkler is calculated according to the above method. .

[0047] According to the calculated compensation coefficient The optimal speed of a single fan is calculated based on the theoretical speed of the single fan. Similarly, the compensation coefficient is calculated based on The optimal water spraying volume of a single sprinkler is calculated based on the theoretical water spraying volume of the single sprinkler.

[0048] Among them, the calculation method of the optimal rotation speed and the optimal water spray volume is:

[0049]

[0050] in, Indicates the optimal speed of a single fan. Indicates the theoretical speed of a single fan. represents the optimal water spraying amount of a single sprinkler, Indicates the theoretical water spray volume of a single fan. , Indicates the corresponding compensation coefficient.

[0051] During the dust removal process in the workshop, the air humidity, air temperature and dust concentration in the air are collected, and the collected parameters are input into the prediction model to obtain the ideal speed of the fan and the ideal water spray volume of the sprinkler. The fan speed is adjusted to the ideal speed, and the water spray volume of the sprinkler is adjusted to the ideal water spray volume, so as to carry out dust reduction treatment in the workshop. When the speed of some fans is lower than the ideal speed or the water spray volume of some sprinklers is lower than the ideal water spray volume, it means that the corresponding fan or sprinkler is faulty. At this time, it is necessary to stop the faulty fan or sprinkler, and then adjust the speed of the intact fan to the optimal speed and adjust the water spray volume of the intact sprinkler to the optimal water spray volume, so as to use the intact fans and sprinklers to achieve normal dust removal in the workshop without stopping the machine, thereby improving the work efficiency of dust removal in the workshop.

[0052] Figure 2 The structural block diagram of the dust removal control system for the abrasive processing industry in this embodiment is schematically shown.

[0053] The present invention also provides a dust removal control system for the abrasive processing industry. Figure 2 As shown, the dust removal control system includes a processor and a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, the abrasive processing industry dust removal control method according to the present invention is implemented.

[0054] The dust removal control system also includes other components well known to those skilled in the art, such as a communication bus and a communication interface. The configuration and functions of these components are known in the art and will not be described in detail herein.

[0055] In the present invention, the aforementioned memory may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, apparatus or device. For example, a computer-readable storage medium may be any appropriate magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc., or any other medium that can be used to store the required information and can be accessed by an application, a module, or both. Any such computer storage medium may be part of a device or accessible or connectable to a device. Any application or module described in the present invention may be implemented using computer-readable / executable instructions that may be stored or otherwise maintained by such a computer-readable medium.

[0056] Although this specification has shown and described a number of embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will conceive of many modifications, changes and alternatives without departing from the ideas and spirit of the present invention. It should be understood that in the practice of the present invention, various alternatives to the embodiments of the present invention described herein may be employed.

Claims

1. Abrasive processing industrial dust control method, characterized in that: The following steps are involved: Obtain air parameters and input them into a preset prediction model to obtain the ideal speed of the fan and the ideal water spray volume of the sprinkler; Adjust the fan speed to the ideal speed and adjust the water spray volume of the sprinkler to the ideal water spray volume; In response to the rotation speed of some fans being less than the ideal rotation speed and / or the water spraying amount of some sprinklers being less than the ideal water spraying amount, adjusting the rotation speed of the remaining fans to the optimal rotation speed and adjusting the water spraying amount of the remaining sprinklers to the optimal water spraying amount; The method of adjusting the speed of the fan to the optimal speed and / or adjusting the water spraying amount of the sprinkler to the optimal water spraying amount is as follows: Calculate the change in dust concentration caused by fans and sprinklers, and the change is positively correlated with dust concentration; The theoretical speed of the fan is obtained according to the pre-drawn dust concentration change curve of the fan and the dust concentration change amount, and the theoretical water spraying amount of the sprinkler is obtained according to the pre-drawn dust concentration change curve of the sprinkler and the dust concentration change amount; Calculate the optimal speed of the fan and the optimal water spray volume of the sprinkler. The optimal speed is positively correlated with the theoretical speed, and the optimal water spray volume is positively correlated with the theoretical water spray volume.

2. The dust removal control method for abrasive processing industry according to claim 1, characterized in that: The expression for the change in dust concentration caused by fans and sprinklers is: In the formula, Indicates the change in dust concentration caused by a single fan. Indicates the change in dust concentration caused by a single sprinkler. Indicates the total dust concentration that needs to be reduced. Indicates the average value of dust concentration at the fan end, Indicates the average dust concentration at the sprinkler end, , are the proportions of large and small particles in dust, respectively.

3. The dust removal control method for abrasive processing industry according to claim 2, characterized in that: The particle size of the dust particles is obtained, and the dust particles with a particle size greater than a preset threshold are regarded as large particles, otherwise they are small particles.

4. The dust removal control method for abrasive processing industry according to claim 1, characterized in that: The calculation method of the optimal rotation speed and the optimal water spray volume is: in, Indicates the optimal speed of a single fan. Indicates the theoretical speed of a single fan. represents the optimal water spraying amount of a single sprinkler, Indicates the theoretical water spray volume of a single fan. , Indicates the corresponding compensation coefficient.

5. The dust removal control method for abrasive processing industry according to claim 4, characterized in that: The expression of compensation coefficient is: in, is the total number of fans, is the number of remaining fans that can operate normally, express When all fans are working normally and at the theoretical speed, the dust concentration can be reduced. It indicates the dust concentration that can be reduced when n fans are operating normally and at the theoretical speed.

6. The dust removal control method for abrasive processing industry according to claim 1, characterized in that: The method for drawing the fan dust concentration change curve is: Obtain the change in dust concentration caused by all fans at different speeds; The ratio of the change in dust concentration to the number of fans is taken as the change in dust concentration caused by a single fan at the speed condition; A rectangular coordinate system is constructed with the rotation speed as the horizontal axis and the change in dust concentration as the vertical axis; The data points are plotted in a rectangular coordinate system and connected to obtain the fan dust concentration change curve.

7. The dust removal control method for abrasive processing industry according to claim 1, characterized in that: Air parameters include air humidity, air temperature and dust concentration in the air.

8. Abrasive processing industrial dust removal control system, characterized in that: include: processor; A memory storing computer instructions for dust removal control in the abrasive processing industry. When the computer instructions are executed by the processor, the system executes the dust removal control method in the abrasive processing industry according to any one of claims 1 to 7.

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