A method for commissioning a blow cleaning of an electromagnetic pulse valve

Abstract

The application provides a kind of electromagnetic pulse valve blowing ash debugging method, three parameters of electromagnetic pulse valve are adjusted in turn: effective damping hole size, pulse width, blowing pressure; The working condition of each blowing ash changes, and the best target value of the blowing pressure and effective blowing volume required for ash removal also changes, the blowing of electromagnetic pulse valve under the previous parameter setting cannot match the current working condition, the application adjusts the parameters to reach the new best target value again, to obtain the best blowing ash effect. The above three parameters are adjusted in the form of nested loop, effective damping hole size as the innermost small loop parameter, pulse width as the second layer of medium loop parameter, blowing pressure as the outermost large loop parameter, nested loop from inside to outside, to achieve the best blowing effect, while reducing the amount of invalid gas, greatly reducing the cost.

Description

Technical Field

[0001] This invention relates to the field of industrial dust removal technology, and in particular to a method for adjusting the pulse jet cleaning of an electromagnetic pulse valve used in a pulse bag / cartridge dust collector. Background Technology

[0002] Pulse jet dust collectors are widely welcomed by users for their high filtration efficiency and stable performance, and have become the mainstream equipment for industrial dust control, factory indoor air purification, and powder recovery both domestically and internationally. The electromagnetic pulse valve, as the core of the pulse jet dust collector's cleaning process, is particularly important, as it directly affects the dust collector's cleaning efficiency, equipment energy consumption, and the normal operation of the production line. Pulse jet cleaning involves the instantaneous opening and closing of the pulse valve, which rapidly injects compressed gas from the pressure-stabilizing air tank through matching nozzles into the inner cavity of the filter bags corresponding to each nozzle. This causes the filter bags to rapidly expand and deform from the inside out, shaking off the dust on the outer surface of the filter bags, thereby regenerating the filtration capacity of the filter bags and significantly reducing the operating resistance of the dust collector. Therefore, the pulse valve is a core component of the baghouse dust collector, and its performance directly affects the cleaning effect of the filter bags and the continuous working capacity of the baghouse dust collector.

[0003] Many people currently hold a misconception that the longer the pulse valve's blowing time, the more compressed air is injected into the dust collector bag, resulting in better dust removal. Therefore, they set the pulse valve's blowing time to be relatively long. However, while the pressure drop in the dust collector decreases rapidly with increasing blowing time, once the blowing time reaches a certain value, the pressure drop decreases only slightly, but the compressed air volume increases exponentially. In the past, pulse valve manufacturers focused only on large blowing volumes, neglecting the peak pressure and effective blowing volume. This resulted in a large amount of ineffective airflow and low-pressure airflow in the continuous blowing, leading to waste. Furthermore, after the parameters of the electromagnetic pulse valve are set, the working condition of the filter bags or filter elements in the dust collector will change over time. The original parameters will no longer be suitable for the current cleaning requirements of the filter bags or filter elements, resulting in a deterioration in the cleaning effect. Therefore, it is best to adjust the parameters periodically when the cleaning effect is unsatisfactory. This will change the pressure peak and effective cleaning volume of the electromagnetic pulse valve to achieve the optimal target value for that moment, matching the current working conditions and obtaining the best cleaning effect. While adjusting the parameters, it is also necessary to pay attention to the consumption of compressed gas to achieve lower energy consumption. Summary of the Invention

[0004] This invention addresses the problem that current electromagnetic pulse valves typically adjust the pulse jet time to increase the jet volume, but this method fails to consistently match the effective jet volume and the peak pressure of the jet to the working conditions, thus failing to achieve the best jet effect and causing waste of pressurized gas. Therefore, this invention proposes a jet-jet cleaning and debugging method for electromagnetic pulse valves.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A method for adjusting the jet cleaning of an electromagnetic pulse valve, wherein the electromagnetic pulse valve includes a damping orifice switching mechanism, the damping orifice switching mechanism being used to switch between different sizes of damping orifices in real time for operation, the operating damping orifice being the effective damping orifice; the jet cleaning adjustment method includes: during operation, the electromagnetic pulse valve real-time adjusting three parameters: the effective damping orifice size, the pulse width, and the jet air pressure. The above three parameters are adjusted according to a nested cycle of the innermost cycle, the second cycle, and the outermost cycle, so that the peak pressure and effective jet volume of the electromagnetic pulse valve are adjusted to the optimal target value corresponding to the operating conditions of the time period, which is most matched with the operating conditions of the filter bag / filter element during the working period;

[0007] The innermost cycle adjustment steps include: keeping the pulse width and blowing air pressure constant, and polling to reduce the effective damping orifice size. When the effective damping orifice size is polled and adjusted, if the peak pressure and effective blowing volume of the electromagnetic pulse valve still cannot reach the optimal target value, then the second cycle is entered.

[0008] The second-level cycle adjustment steps include: keeping the blowing air pressure constant, increasing the pulse width in a polling manner, and each step of pulse width adjustment is nested within a complete innermost cycle; when the pulse width polling adjustment is completed, if the peak pressure and effective blowing volume of the electromagnetic pulse valve still cannot reach the optimal target value, then enter the outermost cycle.

[0009] The outermost cycle adjustment steps include: polling to increase the injection air pressure, and each step of the injection air pressure adjustment is nested with a complete second-layer cycle, and each step of the second-layer cycle adjustment is nested with a complete innermost cycle.

[0010] Preferably, debugging is performed in the following order: initial debugging steps, innermost loop steps, second loop steps, and outermost loop steps; the initial debugging steps include:

[0011] S1. Install an electromagnetic pulse valve with an adjustable effective damping orifice size on the dust removal equipment and connect it to an external control system; the external control system is used to control and adjust the effective damping orifice size, pulse width, and blowing air pressure, and monitor the peak pressure and effective blowing volume of the electromagnetic pulse valve.

[0012] S2. Set the initial blowing air pressure, initial pulse width, and initial effective damping orifice size of the electromagnetic pulse valve to achieve the optimal target value corresponding to the working conditions during this period, and obtain the best blowing effect.

[0013] S3. The electromagnetic pulse valve operates continuously with the set parameters, and the state of the filter bag / filter element of the dust collector changes until the peak value of the blowing pressure and the effective blowing volume can no longer reach the target optimal value corresponding to the working conditions of that period.

[0014] Preferably, the innermost loop step includes:

[0015] S4. Keep the blowing air pressure and pulse width of the electromagnetic pulse valve constant, and reduce the size of the effective damping orifice until the peak blowing pressure and effective blowing volume reach the target optimal value corresponding to the working conditions during this period.

[0016] S5. The electromagnetic pulse valve continues to operate with the parameters of S4 until the peak pressure and effective blowing volume of the injection cannot reach the target optimal value corresponding to the working conditions of that period, then jump back to S4; if the effective damping orifice size can no longer be adjusted, and the peak pressure and effective blowing volume of the injection still cannot reach the target optimal value, then jump to the initial step of the second layer cycle.

[0017] Preferably, the second layer of loop steps includes:

[0018] S6. Keep the blowing air pressure constant, increase the pulse width of the electromagnetic pulse valve, and readjust the effective damping orifice size until the peak pressure and effective blowing volume under the new parameters match the current working conditions and reach the target optimal value; this step is the initial step of the second layer cycle.

[0019] S7. The electromagnetic pulse valve continues to operate with the parameters of S6 until the peak pressure and effective blowing volume of the injection cannot reach the target optimal value, then jumps back to S4; if the pulse width and effective damping orifice size cannot both reach the target optimal value of the peak pressure and effective blowing volume under the working conditions of this period within the adjustment range, then jumps to the initial step of the outermost cycle.

[0020] Preferably, the outermost loop step includes:

[0021] S8. Increase the blowing air pressure, and at the same time readjust the pulse width and the effective damping orifice size until the peak pressure and effective blowing volume under the new parameters match the current working conditions and reach the target optimal value; this step is the initial step of the outermost cycle.

[0022] S9. The electromagnetic pulse valve continues to operate with the parameters of S8 until the peak pressure and effective blowing volume of the jet cannot reach the target optimal value, then jumps back to S4; if the jet air pressure, pulse width, and effective damping orifice size are all within the adjustment range, the peak pressure and effective blowing volume of the jet cannot reach the current target optimal value, then jumps to S10.

[0023] S10. Inspect, repair, or replace the solenoid pulse valve.

[0024] Preferably, the damping orifice switching mechanism includes a damping orifice switching column and a driving device. The damping orifice switching column is connected to the driving device and rotates under the control of the driving device. The size of the effective damping orifice changes with the rotation of the damping orifice switching column. The driving device is controlled by the external control system.

[0025] Preferably, the damping hole switching post has damping holes of different sizes on its side. After the driving device controls the damping hole switching post to rotate, the damping hole that is working normally is the effective damping hole.

[0026] Preferably, the diameter of the effective damping orifice includes 1 mm, 1.5 mm, 1.7 mm, and 2 mm.

[0027] Preferably, the jet pressure of the electromagnetic pulse valve is in the range of 0.2-0.6 MPa.

[0028] Preferably, the pulse width of the electromagnetic pulse valve includes 0.05s, 0.08s, 0.1s, 0.15s, 0.2s, 0.25s, and 0.3s.

[0029] After a period of use, the condition of the filter bag or filter element of an electromagnetic pulse valve will change. To achieve the best blowing effect, the optimal target values ​​for the peak blowing pressure and effective blowing volume will also change accordingly. However, currently, simply increasing the pulse width and the compressed gas blowing volume of electromagnetic pulse valves cannot achieve the best expected results and will also result in the waste of compressed gas.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: by using an electromagnetic pulse valve with adjustable damping orifice size, the size of the effective damping orifice can be adjusted in real time during the operation of the electromagnetic pulse valve. The size of the effective damping orifice directly determines the valve closing time of the electromagnetic pulse valve, which in turn directly affects the amount of compressed gas ejected and the final blowing effect.

[0031] This invention uses a nested loop adjustment method to poll and adjust three parameters: effective damping orifice size, pulse width, and injection pressure. This allows for more adjustable parameters and real-time adjustments during operation. When the optimal target values ​​for peak injection pressure and effective injection volume change with operating conditions, this invention adjusts these three parameters to ensure that the peak injection pressure and effective injection volume of the pulse solenoid valve reach their corresponding optimal values, matching the current operating conditions and achieving the best injection effect for that period. Furthermore, the nested loop adjustment of multiple parameters effectively saves compressed gas injection volume and reduces costs. Attached Figure Description

[0032] Figure 1 A flowchart illustrating the steps involved in the debugging and commissioning of an electromagnetic pulse valve for jet cleaning.

[0033] Figure 2 This is a schematic diagram of the injection pressure and time curves of an electromagnetic pulse valve.

[0034] Figure 3 A comparison chart of electromagnetic pulse valve injection volume tests;

[0035] Figure 4 A comparison chart of pressure peak values ​​tested by electromagnetic pulse valves.

[0036] Figure 5 This is a schematic diagram of the damping adjustable electromagnetic pulse valve of the present invention.

[0037] The electromagnetic pulse valve's structural components include: valve seat-1, diaphragm assembly-2, mounting groove-3, damping orifice switching column-4, and drive device-5. Detailed Implementation

[0038] To provide a further understanding of the purpose, structure, features, and functions of the present invention, detailed descriptions are provided below with reference to specific embodiments.

[0039] The units used are: mm (millimeters), ms (milliseconds), s (seconds), MPa (megapascals), L (liters).

[0040] Pulse valve manufacturers often focus solely on high injection volume, neglecting peak pressure and effective injection volume. This results in significant amounts of ineffective and low-pressure gas flow during continuous gas ejection, leading to waste. Our testing revealed that the size of the damping orifice directly impacts the injection performance of the electromagnetic pulse valve. Within the tested data range, if the peak pressure and effective injection volume decrease after prolonged use, and the injection effect fails to reach its initial state, adjusting the damping orifice size to a smaller value, while keeping other parameters constant, will significantly improve the injection effect, restoring both peak pressure and effective injection volume.

[0041] Please refer to the reference. Figures 1-5 The present invention uses an electromagnetic pulse valve with adjustable damping orifice size in real time; the electromagnetic pulse valve includes a damping orifice switching mechanism, which is used to switch between different sizes of damping orifices in real time for operation, and the working damping orifice is the effective damping orifice.

[0042] The present invention provides a method for adjusting the jet cleaning of an electromagnetic pulse valve, which includes: adjusting the effective damping orifice size, pulse width, and jet air pressure of the electromagnetic pulse valve in real time during operation. The above three parameters are adjusted in a nested cycle of innermost cycle, second cycle, and outermost cycle, so that the peak pressure and effective jet volume of the electromagnetic pulse valve are adjusted to the optimal target value corresponding to the working conditions of the time period, which is most compatible with the working conditions of the filter bag / filter element during the working period.

[0043] The innermost cycle adjustment steps include: keeping the pulse width and blowing air pressure constant, and polling to reduce the effective damping orifice size. When the effective damping orifice size is polled and adjusted, if the peak pressure and effective blowing volume of the electromagnetic pulse valve still cannot reach the optimal target value, then the second cycle is entered.

[0044] The second-level cycle adjustment steps include: keeping the blowing air pressure constant, increasing the pulse width in a polling manner, and each step of pulse width adjustment is nested within a complete innermost cycle; when the pulse width polling adjustment is completed, if the peak pressure and effective blowing volume of the electromagnetic pulse valve still cannot reach the optimal target value, then enter the outermost cycle.

[0045] The outermost cycle adjustment steps include: polling to increase the injection air pressure, and each step of the injection air pressure adjustment is nested with a complete second-layer cycle, and each step of the second-layer cycle adjustment is nested with a complete innermost cycle.

[0046] The specific debugging steps are as follows: Figure 1 As shown, S1-S3 are the initial debugging steps, S4-S5 are the innermost loop steps, S6-S7 are the second loop steps, and S8-S10 are the outermost loop steps.

[0047] S1. Install an electromagnetic pulse valve with an adjustable effective damping orifice size on the dust removal equipment and connect it to an external control system. The external control system is used to control and adjust the effective damping orifice size, pulse width, and blowing air pressure, and to monitor the peak pressure and effective blowing volume of the electromagnetic pulse valve.

[0048] S2. Set the initial jet pressure, initial pulse width, and initial effective damping orifice size of the electromagnetic pulse valve to achieve the optimal target value corresponding to the working conditions during this period and obtain the best jet effect.

[0049] S3. The electromagnetic pulse valve works continuously with the set parameters, and the state of the filter bag / filter element of the dust collector changes until the peak value of the pulse pressure and the effective pulse volume can no longer reach the target optimal value corresponding to the working conditions of that period.

[0050] S4. Keep the blowing air pressure and pulse width of the electromagnetic pulse valve constant, and reduce the size of the effective damping orifice until the peak blowing pressure and effective blowing volume reach the target optimal value corresponding to the working conditions during this period.

[0051] S5. The electromagnetic pulse valve continues to operate with the parameters of S4 until the peak pressure and effective blowing volume of the jet cannot reach the target optimal value corresponding to the working conditions of this period, then jump back to S4; if the effective damping orifice size can no longer be adjusted, and the peak pressure and effective blowing volume of the jet still cannot reach the target optimal value, then jump to S6.

[0052] S7. The electromagnetic pulse valve continues to operate with the parameters of S6 until the external control system monitors again that the peak pressure and effective spray volume of the jet cannot reach the target optimal value, then jumps back to S4; if the pulse width and effective damping orifice size cannot make the peak pressure and effective spray volume of the jet reach the current target optimal value within the adjustment range, then jumps to S8.

[0053] S8. Increase the blowing air pressure, and at the same time readjust the pulse width and the effective damping orifice size until the peak pressure and effective blowing volume under the new parameters match the current working conditions and reach the target optimal value.

[0054] S9. The electromagnetic pulse valve continues to operate with the parameters of S8 until the external control system monitors again that the peak pressure and effective blowing volume of the jet cannot reach the target optimal value, then jumps back to S4; if the jet air pressure, pulse width, and effective damping orifice size cannot reach the current target optimal value of the jet pressure and effective blowing volume within the adjustment range, then jumps to S10.

[0055] S10. Inspect, repair, or replace the solenoid pulse valve.

[0056] In one embodiment, the damping orifice switching mechanism includes a damping orifice switching post 4 and a driving device 5. The damping orifice switching post 4 is connected to the driving device 5 and rotates under the control of the driving device 5. The size of the effective damping orifice changes with the rotation of the damping orifice switching post 4. The driving device 5 is controlled by an external control system and can be a motor or other small driving mechanism.

[0057] The debugging method of this invention utilizes a nested loop adjustment approach to sequentially adjust three parameters of the electromagnetic pulse valve: effective damping orifice size, pulse width, and blowing air pressure. As the dust collector's usage time increases, the working condition of the filter bag or filter cartridge changes, requiring parameter adjustments to alter the blowing pressure and effective blowing volume of the electromagnetic pulse valve. This allows the electromagnetic pulse valve's blowing to match the changed operating conditions, ensuring that both the blowing pressure and effective blowing volume reach their current optimal target values, thereby achieving the best blowing effect. First, fix the other two parameters and adjust the size of the effective damping orifice individually. This step is achieved by rotating the damping orifice switching column. The smaller the effective damping orifice, the longer the closing time of the electromagnetic pulse valve, and the more compressed gas is ejected. When adjusting the size of the effective damping orifice alone can no longer match the current working conditions to achieve the optimal target value, a two-stage nested cycle adjustment is initiated. That is, adjusting the pulse width is the large cycle, and adjusting the effective damping orifice size is the small cycle. The parameters are adjusted sequentially. The larger the pulse width, the longer the blowing time, and the more compressed gas is ejected, thereby enhancing the blowing and cleaning effect. If the parameter adjustment of the above two-stage nested cycle also cannot match the current working conditions to achieve the optimal target value, and the blowing and cleaning effect is not significantly improved, a three-stage nested cycle is initiated. The blowing air pressure is used as the outermost large cycle parameter, the pulse width is used as the second cycle parameter, and the effective damping orifice size is used as the innermost cycle parameter, and the parameters are adjusted sequentially. Each time the pulse-jet cleaning process changes, the optimal target values ​​for the required cleaning pressure and effective cleaning volume also change. The previous parameter settings for the electromagnetic pulse valve's cleaning are no longer suitable for the current conditions, thus requiring parameter adjustment to achieve the new optimal target values. The debugging method of this invention allows for orderly, small-scale adjustments to the three parameters, effectively reducing the amount of ineffective gas being sprayed, significantly saving compressed gas consumption, lowering costs, and ensuring the cleaning effect. During the debugging process, if the cleaning effect remains unchanged regardless of parameter adjustments, it can be determined that the electromagnetic pulse valve is malfunctioning and requires repair or replacement.

[0058] In one embodiment, the electromagnetic pulse valve has the following structure: Figure 5 As shown, a mounting groove 3 is formed on the valve seat 1 of the electromagnetic pulse valve. The mounting groove 3 spans the diaphragm assembly 2 of the electromagnetic pulse valve. The damping orifice switching post 4 is installed in the mounting groove 3 and rotates around its own axis under the drive of the driving device 5. The mounting groove 3 has a notch, and the damping orifice located in the notch on the damping orifice switching post 4 is the effective damping orifice. The driving device 5 is controlled by an electrical signal from an external control system. The above structure enables the electromagnetic pulse valve to adjust the size of the damping orifice during use without stopping the machine or disassembling the electromagnetic pulse valve to replace the diaphragm assembly 2, making the adjustment method of the present invention possible.

[0059] Furthermore, the damping orifice switching post is a hollow cylindrical structure with multiple damping orifices of varying sizes. Preferably, the diameters of the damping orifices on the side of the damping orifice switching post can be selected from 1mm, 1.5mm, 1.7mm, and 2mm. As the driving device 5 rotates the damping orifice switching post 4, the damping orifices of different sizes sequentially align with the notches on the damping orifice switching post, and the size of the effective damping orifice continuously changes and adjusts.

[0060] In one embodiment, the jet pressure of the electromagnetic pulse valve is in the range of 0.2-0.6 MPa.

[0061] In one embodiment, the pulse width of the electromagnetic pulse valve can be selected from values ​​including 0.05s, 0.08s, 0.1s, 0.15s, 0.2s, 0.25s, and 0.3s.

[0062] Our company used the debugging method of this invention for testing, and the specific details of the blowing test are as follows:

[0063] The electromagnetic pulse valve selected for testing is a damping adjustable electromagnetic pulse valve manufactured by our company. It is based on JB / T5916-2013 Electromagnetic Pulse Valve for Bag Filters, with a working voltage of DC24V and a power of 30W.

[0064] The electromagnetic pulse valve life test air bag mainly uses the V1 air bag in the workshop inventory, which is fixed on a wooden pallet and placed in the laboratory to simulate the on-site working conditions for high-frequency blowing.

[0065] The pulse jet performance testing device has a 45L air distribution box equipped with a pressure sensor, which is mainly used to collect data on the pressure changes in the air distribution box and the pulse jet pressure during pulse jet injection.

[0066] The number of blows during the interruption (inspection) of the blow test was 100,000. The diaphragm and spring were in good condition during and after the test, with no abnormalities.

[0067] The relationship between the injection pressure and time curve of the pulse valve is as follows: Figure 2 As shown, the shaded area enclosed by the curve and the X-axis represents the jet volume of the electromagnetic pulse valve, t1 is the pulse width of the electronic controller, t2 is the time lag of the electrical signal after the valve diaphragm opens, t3 is the opening time of the valve diaphragm, t4 is the jetting time of the valve diaphragm, t5 is the closing time of the valve diaphragm, t6 is the time lag between the valve diaphragm starting to close and the electrical signal closing, t is the time from the valve diaphragm starting to open to the valve fully closing, p1 is the pressure drop of the gas in the gas bag when the pulse valve is jetting, p2 is the pressure drop of the fluid in the valve body when the pulse valve is jetting, p3 is the peak jetting pressure at the start of jetting, and p4 is the jetting pressure value when the valve diaphragm starts to close.

[0068] This test mainly collected the injection data of the electromagnetic pulse valve under different injection pressures, such as 0.3MPa, 0.4MPa, and 0.6MPa, and different pulse widths, such as 0.05s, 0.08s, 0.1s, 0.15s, 0.2s, 0.25s, and 0.3s. The data was then compared with those of two leading electromagnetic pulse valve brands on the market (hereinafter referred to as Comparison Valve 1 and Comparison Valve 2), and the data was recorded.

[0069] Where t1, t2, t3, t4, t5, t, p1, p3, and p4 are all Figure 1 The labels in the text refer to the corresponding quantities; the smaller the pressure drop represented by P2, the better the flow performance of the electromagnetic pulse valve.

[0070] Under a blowing pressure of 0.5 MPa, pulse widths of 0.05 s, 0.1 s, 0.15 s, and 0.2 s were recorded, and partial blowing data of comparative valve 1, comparative valve 2, and the self-made valve used in this invention were compared.

[0071]

[0072]

[0073] Under a blowing pressure of 0.6 MPa, pulse widths of 0.05 s, 0.1 s, 0.15 s, and 0.2 s were recorded, and partial blowing data of comparative valve 1, comparative valve 2, and the self-made valve used in this invention were compared.

[0074]

[0075]

[0076] According to the data, it can be seen that under the same injection pressure and the same pulse width, the injection volume of the self-made valve is better than that of the comparison valve 1 and the comparison valve 2.

[0077] Based on the test data, the blowing volume test data of our self-made valves with dimensions of 1mm, 1.5mm, 1.7mm, and 2mm damping orifices under the same conditions for comparison valve 1, comparison valve 2, and damping orifices of 1mm, 1.5mm, 1.7mm, and 2mm respectively were summarized and plotted into a line graph, and a portion of the overall line graph was extracted as an appendix. Figure 2 This demonstrates the variation trend of the jet volume of the electromagnetic pulse valve under different damping orifice sizes.

[0078] Based on the test data, the peak pressure values ​​of our self-made valves (comparison valve 1, comparison valve 2, and damping orifice sizes of 1mm, 1.5mm, 1.7mm, and 2mm respectively) under the same conditions were summarized and plotted as a line graph. A portion of the overall line graph was then used as an appendix. Figure 3 This demonstrates the changing trend of the peak pressure of the electromagnetic pulse valve under different damping orifice sizes.

[0079] in, Figure 3 The term "1 injection volume" refers to the injection volume of the pulse valve when the damping orifice of the self-made pulse valve diaphragm is 1mm; similarly, 1.5, 1.7, and 2 refer to the injection volumes of the electromagnetic pulse valve when the size of the damping orifice of the self-made pulse valve diaphragm is 1.5mm, 1.7mm, and 2mm, respectively.

[0080] Similarly, Figure 4 In this context, "1-p3" refers to the peak pressure of the pulse valve when the damping orifice of the self-made pulse valve diaphragm is 1mm; similarly, 1.5-p3, 1.7-p3, and 2-p3 refer to the peak pressure of the electromagnetic pulse valve when the size of the damping orifice of the pulse valve diaphragm is 1.5mm, 1.7mm, and 2mm, respectively.

[0081] Depend on Figure 2 It can be seen that, except for the curve of "1 injection volume", which is the most unstable, the waveforms of the other curves are relatively stable. The overall injection volume of the "1.5 injection volume" and "1.7 injection volume" curves of the self-made valve is greater than the overall injection volume of the "comparison valve 1 injection volume" and "comparison valve 2 injection volume" curves, while the overall injection volume of the "2 injection volume" curve of the self-made valve is less than the overall injection volume of the "comparison valve 1 injection volume" and "comparison valve 2 injection volume" curves. That is, under the current test conditions, when the damping orifice size of our self-made valve is 2mm, its overall blowing volume is smaller than that of comparison valve 1 and comparison valve 2. However, when the damping orifice size of our self-made valve is adjusted to 1.7mm and 1.5mm, the blowing volume of the self-made valve is greater than that of comparison valve 1 and comparison valve 2. Moreover, the overall blowing volume of the self-made valve with a damping orifice size of 1.5mm is higher than that with a damping orifice size of 1.7mm. Furthermore, when the damping orifice size of the self-made valve is further reduced to 1mm, although the overall blowing volume increases, its curve waveform is destroyed, that is, the blowing effect becomes worse.

[0082] Therefore, by Figure 3 It can be seen that the damping orifice size of our self-made valve can be adjusted within a certain range to obtain a larger blowing volume and a better blowing effect than comparative valve 1 and comparative valve 2. Within this range, the smaller the damping orifice size, the larger the blowing volume. However, once it exceeds the adjustment range, if the damping orifice is too small, even if the blowing volume is larger, the blowing effect will be worse.

[0083] Hundreds or even thousands of sets of test data were compared and analyzed to create a spray volume comparison chart, as shown in the attached figure. Figure 3 As shown. In Figure 3 In this context, "1 injection volume" refers to the injection volume of the pulse valve when the damping orifice of the self-made pulse valve diaphragm is 1mm; similarly, 1.5, 1.7, and 2 refer to the injection volumes of the electromagnetic pulse valve when the damping orifice size of the self-made pulse valve diaphragm is 1.5mm, 1.7mm, and 2mm, respectively. Each curve corresponds to the test data for one damping orifice size, derived from... Figure 3As can be seen from the curve,

[0084] Depend on Figure 4 It can be seen that the curves corresponding to "Comparison Valve 1-p3" and "Comparison Valve 2-p3" are relatively poor in smoothness, with both exhibiting steep abrupt changes. In contrast, the curves corresponding to "1-p3", "1.5-p3", "1.7-p3", and "2-p3" of our self-made valve are all smoother, without any abrupt changes or burrs. Furthermore, among the different curves corresponding to the four different sizes of damping orifices of the self-made valve, the smaller the diameter of the damping orifice, the smoother the curve.

[0085] pass Figure 3 and Figure 4 Based on the data comparison and analysis, in this test, the injection volume curve and pressure peak curve corresponding to the damping orifice size of 1.5mm showed the most stable performance, without sudden fluctuations, and increased with the increase of injection pressure. Furthermore, the data performance was better than the data from other valve assembly tests. Therefore, a diaphragm valve assembly structure with a diaphragm damping orifice of 1.5mm can be selected for testing the self-made pulse valve.

[0086] The damping orifice size adjustment is as shown in the test method described above. Through data monitoring and analysis, the optimal damping orifice diameter for the best blowing effect can be obtained. When the overall blowing effect decreases, the damping orifice diameter should be adjusted first. If adjusting the damping orifice diameter fails to improve the blowing effect, the pulse width should be adjusted. If adjusting the pulse width also fails to achieve the optimal blowing effect, the blowing air pressure of the air tank should be changed lastly. This invention's adjustment method can increase the effective airflow, increase the peak blowing pressure, improve the blowing cleaning effect, and significantly save compressed gas, thus reducing the cost of dust collector blowing cleaning.

[0087] The present invention has been described in the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. Conversely, any modifications and refinements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A method for adjusting the jet cleaning of an electromagnetic pulse valve, characterized in that, The electromagnetic pulse valve includes a damping orifice switching mechanism, which is used to switch between different sizes of damping orifices in real time for operation. The working damping orifice is the effective damping orifice. The damping orifice switching mechanism includes a damping orifice switching column and a driving device. The damping orifice switching column is connected to the driving device and rotates under the control of the driving device. The size of the effective damping orifice changes with the rotation of the damping orifice switching column. The driving device is controlled by an external control system. The pulse-jet cleaning and debugging method includes: during operation, the electromagnetic pulse valve adjusts the effective damping orifice size, pulse width, and pulse-jet air pressure in real time. The above three parameters are adjusted in a nested cycle of innermost circulation, second circulation, and outermost circulation to adjust the peak pressure and effective pulse volume of the electromagnetic pulse valve to the optimal target value corresponding to the working conditions of the time period, which is most compatible with the working conditions of the filter bag / filter element during the working period. The innermost cycle adjustment steps include: keeping the pulse width and blowing air pressure constant, and polling to reduce the effective damping orifice size. When the effective damping orifice size is polled and adjusted, if the peak pressure and effective blowing volume of the electromagnetic pulse valve still cannot reach the optimal target value, then the second cycle is entered. The second-level cycle adjustment steps include: keeping the blowing air pressure constant, increasing the pulse width in a polling manner, and each step of pulse width adjustment is nested within a complete innermost cycle; when the pulse width polling adjustment is completed, if the peak pressure and effective blowing volume of the electromagnetic pulse valve still cannot reach the optimal target value, then enter the outermost cycle. The outermost cycle adjustment steps include: polling to increase the injection air pressure, and each step of the injection air pressure adjustment is nested with a complete second-layer cycle, and each step of the second-layer cycle adjustment is nested with a complete innermost cycle.

2. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 1, characterized in that, Debug in the following order: initial debugging steps, innermost loop steps, second loop steps, and outermost loop steps. The initial debugging steps include: S1. Install an electromagnetic pulse valve with an adjustable effective damping orifice size on the dust removal equipment and connect it to an external control system; the external control system is used to control and adjust the effective damping orifice size, pulse width, and blowing air pressure, and monitor the peak pressure and effective blowing volume of the electromagnetic pulse valve. S2. Set the initial blowing air pressure, initial pulse width, and initial effective damping orifice size of the electromagnetic pulse valve to achieve the optimal target value corresponding to the working conditions during this period, and obtain the best blowing effect. S3. The electromagnetic pulse valve operates continuously with the set parameters, and the state of the filter bag / filter element of the dust collector changes until the peak value of the blowing pressure and the effective blowing volume can no longer reach the target optimal value corresponding to the working conditions of that period.

3. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 2, characterized in that, The innermost loop step includes: S4. Keep the blowing air pressure and pulse width of the electromagnetic pulse valve constant, and reduce the size of the effective damping orifice until the peak blowing pressure and effective blowing volume reach the target optimal value corresponding to the working conditions during this period. S5. The electromagnetic pulse valve continues to operate with the parameters of S4 until the peak pressure and effective blowing volume of the injection cannot reach the target optimal value corresponding to the working conditions of that period, then jump back to S4; if the effective damping orifice size can no longer be adjusted, and the peak pressure and effective blowing volume of the injection still cannot reach the target optimal value, then jump to the initial step of the second layer cycle.

4. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 3, characterized in that, The second loop steps include: S6. Keep the blowing air pressure constant, increase the pulse width of the electromagnetic pulse valve, and readjust the effective damping orifice size until the peak pressure and effective blowing volume under the new parameters match the current working conditions and reach the target optimal value; this step is the initial step of the second layer cycle. S7. The electromagnetic pulse valve continues to operate with the parameters of S6 until the peak pressure and effective blowing volume of the injection cannot reach the target optimal value, then jumps back to S4; if the pulse width and effective damping orifice size cannot both reach the target optimal value of the peak pressure and effective blowing volume under the working conditions of this period within the adjustment range, then jumps to the initial step of the outermost cycle.

5. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 4, characterized in that, The outermost loop step includes: S8. Increase the blowing air pressure, and at the same time readjust the pulse width and the effective damping orifice size until the peak pressure and effective blowing volume under the new parameters match the current working conditions and reach the target optimal value; this step is the initial step of the outermost cycle. S9. The electromagnetic pulse valve continues to operate with the parameters of S8 until the peak pressure and effective blowing volume of the jet cannot reach the target optimal value, then jumps back to S4; if the jet air pressure, pulse width, and effective damping orifice size are all within the adjustment range, the peak pressure and effective blowing volume of the jet cannot reach the current target optimal value, then jumps to S10. S10. Inspect, repair, or replace the solenoid pulse valve.

6. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 1, characterized in that, The damping hole switching column has damping holes of different sizes on its side. After the driving device controls the damping hole switching column to rotate, the damping hole that is working normally is the effective damping hole.

7. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 1, characterized in that, The diameter of the effective damping orifice includes 1mm, 1.5mm, 1.7mm, and 2mm.

8. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 1, characterized in that, The jet pressure of the electromagnetic pulse valve is in the range of 0.2-0.6 MPa.

9. The jet cleaning and debugging method for the electromagnetic pulse valve as described in claim 1, characterized in that: The pulse width of the electromagnetic pulse valve includes 0.05s, 0.08s, 0.1s, 0.15s, 0.2s, 0.25s, and 0.3s.

Images