Mine blasting dust suppression vehicle water-saving system and control method thereof
By controlling the number of cycles of the rotating spray bar of the mine blasting dust suppression vehicle to reciprocate, the problem of water waste during water spraying is solved, and water resources are saved while ensuring the dust suppression effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI SHENZHOU JINGYI AUTOMOBILE MANUFACTURING CO LTD
- Filing Date
- 2026-04-02
- Publication Date
- 2026-06-02
AI Technical Summary
During the water spraying process, existing dust suppression vehicles used in mining blasting experience a decrease in water spraying range as the air pressure inside the tank decreases, leading to water waste and an inability to effectively control the release of water from the tank.
The MCU controller controls the number of reciprocating swing cycles of the rotating spray bar, presets the effective working cycle of the rotating spray bar, and actively terminates the water spraying operation when the pressure inside the tank can still maintain the effective range, reserving some water for the next operation.
While ensuring dust suppression, it saves water resources and improves water utilization, making it particularly suitable for mining areas with scarce water resources.
Smart Images
Figure CN122129308A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automated control of special vehicles, specifically a water-saving system for a dust suppression vehicle used in mining blasting operations, and a control method based on this system for achieving quantitative water retention in the tank by controlling the number of cycles of the rotating spray bar. Background Technology
[0002] Application No. 202110634110.3 discloses a multi-functional dust suppression vehicle with a combined spray bar, including an air-pressurizing device, a tank, and a water spraying system. The water spraying system includes a spray bar and nozzles. The water spraying system is connected to the tank, a rotating device, and a spray bar. The water supply pipe is equipped with a drain valve. The connection method is as follows: one end of the water supply pipe is connected to the tank, the other end of the water supply pipe is connected to the rotating device, and the water inlet end of the spray bar is connected to the rotating device.
[0003] Application No. 202321630554.0 discloses a dust suppression vehicle with a dual-tank configuration and a dual-pressure water jet rotary device, comprising: a vehicle chassis, a left-side pressure water storage tank, and a right-side pressure water storage tank. Both the left-side and right-side pressure water storage tanks have their own independent pressure water jet rotary devices with the same structure and connection method. The water outlet pipe of the pressure water jet rotary device is directly inserted from the top of the pressure water storage tank to the bottom, reducing the length of the water outlet pipe and the number of bends in the water outlet pipe, thereby reducing the frictional resistance of the water flow and increasing the spray water flow distance.
[0004] The common problem with the aforementioned dust suppression trucks is that after each dust suppression water spraying process, the air pressure inside the tank is completely released, and the water is completely sprayed out. However, during the spraying process, as the air pressure inside the tank decreases, the spray range also gradually decreases. When the spray range decreases to a certain extent, the water sprayed out no longer has any dust suppression effect, which is a waste of water. Summary of the Invention
[0005] To address the shortcomings and defects of existing technologies, a water-saving system for a dust suppression vehicle used in mining blasting has been invented, comprising: a tank, an exhaust valve, a water outlet pipe, a drain valve, a rotating spray bar, a parameter setting device, and an MCU controller. The MCU controller receives preset parameters from the parameter setting device and controls the operation logic of the exhaust valve, the drain valve, and the rotating spray bar actuator accordingly.
[0006] Based on the above system, a water-saving method for a mine blasting dust suppression vehicle has been invented. Its core lies in: by pre-setting the effective working cycle of the rotating spray boom, using the number of reciprocating swing cycles as a quantitative indicator, actively terminating the water spraying operation when the pressure inside the tank can still maintain the effective range, thus retaining a portion of water in the tank for the next operation. The key feature is that: the parameter setting device pre-sets the number of reciprocating swing cycles of the rotating spray boom during blasting dust suppression water spraying; when blasting dust suppression begins, the MCU controller executes the control command for blasting dust suppression water spraying, closing the exhaust valve (terminating the air-pressurization state), opening the drain valve, and reciprocating the rotating spray boom; when the number of reciprocating swing cycles of the rotating spray boom reaches the pre-set value, the MCU controller executes the control command to interrupt blasting dust suppression water spraying, opening the exhaust valve (restoring the air-pressurization state), closing the drain valve, etc., stopping further water spraying, thus retaining a portion of water in the tank. After the blasting dust suppression water spraying is interrupted, the water retained in the tank and subsequent replenishment water in the tank are used for the next blasting dust suppression operation. The amount of water retained in the tank is the amount of water saved this time.
[0007] Its features also include: the MCU controller has a built-in oscillation cycle number-remaining water volume mapping table, which is obtained through pre-calibration test; according to the target cycle number N provided by the parameter setting device, after the rotating spray bar completes N complete reciprocating oscillations, the system can display the remaining water volume in the tank according to the remaining water volume mapping table, which is convenient for operators to calculate the amount of water and time to be replenished.
[0008] Specifically, the parameter setting device can be a production debugging device: a computer and programmer used to pre-program the core algorithm, key coefficients, and default parameter database into the MCU. It can also be a field operation device: a vehicle-mounted operation panel (such as a touch screen or physical button unit) used to input the blasting parameters during daily operations.
[0009] Therefore, the preset parameters of the parameter setting device can be provided by a program that has been pre-compiled and burned into the MCU controller, or they can be input by the operator based on experience through the parameter setting device.
[0010] Specifically, the parameter setting device is used to receive the number of rotation cycles of the rotating spray boom or the on-site parameters of the blasting operation input by the operator, including the blasting area, dust suppression coverage width, number of blast holes, and layout information. It should be noted that in actual mine blasting, blast holes are holes for installing explosives, usually arranged in multiple rows and columns on the mountainside. The "number of blast holes" mentioned in this invention specifically refers to the number of rows of blast holes (i.e., the number of rows of holes perpendicular to the spray direction of the dust suppression vehicle), while different rows within the same column are considered as a whole for coverage and are not included in the quantity calculation.
[0011] Specifically, the algorithm model used for intelligent computing, key coefficients, and a database containing default values for various parameters are all stored as preset programs in the MCU controller's memory. When the operator fails to fully input a field parameter, the MCU controller will automatically call the corresponding default value from the database to ensure that the workflow can continue.
[0012] Specifically, the reciprocating oscillation cycle refers to a complete process in which the rotating spray bar swings from one extreme position to another extreme position and then returns to the initial position.
[0013] Specifically, the parameter setting device is a TS-HCI (Human Machine Interaction Touch Screen). It can also be a mechanical button or keyboard input device.
[0014] Preferably, the parameter setting device can remotely receive and send input parameters via a Bluetooth module or a 4G / 5G module, through a mobile terminal or a network terminal.
[0015] Based on the above system and water-saving method, its features include the following two working modes: Mode A: Solidification Cycle Count Mode (Suitable for mining areas with fixed operating conditions) Step A1: Through on-site testing and calibration, determine the minimum number of reciprocating swing cycles required for the rotating spray boom to effectively cover the entire blast area under the current fixed operating conditions (fixed blast area size, hole layout, and vehicle placement position). This number is denoted as N0. The parameter setting device is used to pre-store this number into the non-volatile memory of the MCU controller via program burning.
[0016] Step A2: Dust suppression blasting is started. The MCU controller issues the following instructions: close the exhaust valve → open the drain valve → start the rotating spray bar to swing back and forth.
[0017] Step A3: The position sensor counts the number of swings in real time. When the cumulative number reaches N0, the MCU controller determines that the dust suppression water curtain has been formed and the explosion zone has been effectively covered. It immediately issues the following instructions: close the drain valve → open the exhaust valve → stop the swing drive.
[0018] Step A4: The relevant parameters in the MCU controller are restored to their initial state, preparing for the next pressurization and operation. At this time, the remaining water in the tank (usually 10% to 30% of the total tank volume) is the water saved in this operation, which will be mixed with subsequent replenishment water and used for the next blasting dust suppression.
[0019] Mode B: Adaptive Calculation Mode (Suitable for mining areas with variable operating conditions) Step B1: The operator inputs the following field parameters through the parameter setting device: blasting width (denoted as W, unit: meters), number of blasting holes (denoted as M, unit: holes), and blasting point layout coefficient (denoted as L, 1.0 for centralized layout, 1.5 for decentralized layout, and 1.2 for linear layout).
[0020] Step B2: The MCU controller reads the internally stored equipment parameters: effective spray distance (denoted as R, unit: meters), spray boom rotation angular velocity (denoted as ω, unit: degrees / second), and rated air pressure drop time (denoted as Tmax, unit: seconds). The effective spray distance R is the maximum straight-line distance (e.g., 120 meters) that enables effective dust suppression spraying, measured through factory calibration tests when the tank is filled with the rated working pressure (e.g., 3 MPa). This R value is pre-stored in the MCU controller and does not require on-site input by the operator.
[0021] Step B3: Calculate the central angle (i.e., the rotation angle required for a single coverage, denoted as θ, unit: degrees) of the fan-shaped area that can be covered by a single swing of the rotating spray boom. The calculation formula is: θ = 2 × arctan( (W / 2) / R ).
[0022] Step B4: Calculate the time required for the rotating spray boom to complete one full reciprocating swing (from the left limit to the right limit and back to the left limit) (denoted as Tcycle, unit: seconds). The calculation formula is: Tcycle = (2×θ) / ω.
[0023] Step B5: Calculate the minimum number of swings (denoted as Nneed) required to ensure coverage of all blast points. The calculation method is: multiply the number of blast holes M by the layout correction factor L, and then round up to obtain an integer. The physical meaning is: each blast point needs to be covered by the water curtain at least once, and each swing covers a fan-shaped area. With reasonable layout, full coverage can be achieved with Nneed swings.
[0024] Step B6: Calculate the maximum number of oscillations allowed by the system before the internal pressure drops to the effective spray threshold (denoted as Nmax). The calculation method is: divide the rated pressure effective time Tmax by Tcycle, and then round down to the nearest integer. The physical meaning is: after exceeding Nmax times, the internal pressure is no longer sufficient to maintain the effective range, and the water mist sprayed by subsequent oscillations cannot reach the explosion zone, which is an invalid operation.
[0025] Step B7: Determine the final number of execution cycles (denoted as N), and take the smaller value between Nneed and Nmax, i.e., N = min(Nneed, Nmax). This value of N is the minimum number of swings that can actually be completed while ensuring dust suppression effect (covering all blast points).
[0026] Step B8: Perform water spraying according to steps A2 to A4 in mode A, and actively stop water spraying after completing N swings.
[0027] After N swings, the dust suppression task is complete. Continuing to spray water is unnecessary and wasteful, so the process is terminated. During operation, the operator only needs to place the dust suppression vehicle at a position no more than R from the edge of the blasting area; there is no need to measure or input the "actual distance from the dust suppression vehicle to the blasting point".
[0028] This invention relates to a water-saving method for a dust suppression vehicle used in mine blasting. Its significant innovation and technological advancement lie in the fact that the number of cycles of the rotating spray boom can be pre-set according to the actual dust suppression area. This ensures that during the water spraying process for dust suppression blasting, the water in the tank is not released all at once, but a portion is retained while maintaining the dust suppression effect. This retained water, along with subsequent tank replenishment, is used for the next dust suppression blasting operation, thus alleviating the problem of high water consumption by dust suppression vehicles and achieving water conservation. This provides an effective and practical solution balancing environmental protection and water conservation. Attached Figure Description
[0029] Appendix Figure 1 This is a schematic diagram of the tank body and its structure related to the water spraying device of the present invention; Appendix Figure 2 The flowchart shows the MCU controller executing control instructions according to the present invention. Specific implementation method 1: As attached Figure 1 Appendix Figure 2 As shown, a system for a mine blasting dust suppression vehicle includes: a tank 1, an exhaust valve 2, a water outlet pipe 3, a drain valve 4, a rotating spray bar 5, a parameter setting device 6, and an MCU controller 7. The system is characterized by: the parameter setting device 6 being a computer and a programmer, which uses a computer program to burn the default value or default parameter database of the number of reciprocating swings of the rotating spray bar 5 during blasting dust suppression spraying into the memory of the MCU controller, thus pre-setting the default value of the number of reciprocating swings of the rotating spray bar 5 during blasting dust suppression spraying; when blasting dust suppression begins, the MCU controller 7 executes the control command for blasting dust suppression spraying, closing the exhaust valve 2, opening the drain valve 4, and reciprocating the rotating spray bar 5; when the number of reciprocating swings of the rotating spray bar 5 reaches the pre-set number of swings, the MCU controller 7 executes the control command to interrupt the blasting dust suppression spraying, opening the exhaust valve 2, closing the drain valve 4, etc., stopping the spraying and leaving some water in the tank 1. After the blasting dust suppression water spray is interrupted, the water retained in tank 1, along with any subsequent replenishment water, is used for the next blasting dust suppression operation. The amount of water retained in tank 1 represents the amount of water saved in this operation.
[0031] Specifically, the reciprocating oscillation cycle refers to a complete process in which the rotating spray bar swings from one extreme position to another extreme position and then returns to the initial position.
[0032] Specifically, the MCU controller is a high-performance industrial-grade PLC, which stores the pre-written control program and the algorithm model.
[0033] Preferably, the default parameter database contains at least the following types of information: The baseline value (K) for the number of dust suppression coverage cycles for a typical blasting hole: For blasting holes with different hole diameters or charge amounts, multiple baseline values are preset for the model to use.
[0034] Correction coefficient (α) for typical terrain and blasting hole layout: Different correction coefficients are preset for typical blasting point layouts such as concentrated, dispersed, and linear. Different correction coefficients have corresponding preset programs in the MCU controller 7 to control the rotating spray bar to accelerate, decelerate, or move at a constant speed.
[0035] Standard dust suppression coverage width (W): A conservative estimate based on vehicle performance, used when operators are uncertain.
[0036] Specific experimental data (fixed cycle count pattern, for a fixed mining area) In an iron ore mine, the blasting area is fixed at 100 meters long and 60 meters wide. Field tests determined that after the rotating spray boom 5 completes its sixth full cycle, the water curtain covers the entire blasting area, and the water mist density at all measuring points reaches the dust suppression requirement of 0.3 liters / square meter or higher. Therefore, the minimum number of cycles N0 required for effective coverage is determined to be 6 cycles. The system parameters are as follows: A single water tank has a volume of 16 cubic meters. Assuming a dust suppression vehicle is equipped with two water tanks, the total water volume of the tanks is 32 cubic meters. Half of the tanks are filled with water, and the other half is filled with pressurized gas to reach the spray pressure standard. The total water volume should be 16 cubic meters.
[0037] The value N0=6 is pre-written into the EEPROM of the MCU controller 7 using a programmer.
[0038] The calibration test data are shown in the table below: During operation: After startup, the MCU controller 7 closes the exhaust valve 2, opens the drain valve 4, and drives the rotating spray bar 5 to swing. Each time the encoder detects a complete swing from the leftmost to the rightmost and back to the leftmost position, the counter increments by 1. When six complete swings are detected, the controller determines that dust suppression is complete, immediately closes the drain valve 4, and opens the exhaust valve 2. At this point, approximately 5 cubic meters of water remain in the tank (30% of the total volume). This water is naturally left over after the dust suppression task is completed and will be mixed with the 11 cubic meters of water to be used for the next replenishment before continuing operation. Actual measurements show that the original method required 15-16 cubic meters of water to be sprayed, while this invention consumes only 11.2 cubic meters of water while ensuring dust suppression meets standards, saving 30% of water, and without any insufficient coverage. Detailed Implementation
[0039] This example optimizes upon Specific Implementation Method 1, but differs in that the parameter setting device 6 is a TS-HCI (Human-Machine Interface) touchscreen used to input specific parameters at the blasting site. The MCU controller 7 acts as the control core, connecting and coordinating all electrical components based on the received parameters, and executing the control program to perform the operational actions.
[0040] Specifically, in addition to basic controls, the parameter setting device (touchscreen) also includes a dedicated interface for inputting parameters such as "blasting width", "number of blasting holes", and "maximum spray angle".
[0041] Specifically, the parameter for the number of reciprocating cycles of the rotating spray bar includes: "Input Variable Parameter" and "Fixed Parameter": Input variable parameters (set by the operator via touchscreen): 1. Dust suppression coverage width / blasting width (unit: meters) 2. Number of blast holes (unit: holes) Fixed parameters (system preset or determined through calibration): 1. Effective spray distance (unit: meters) 2. Spray bar rotation speed (unit: degrees / minute) 3. Rated spraying operation time (unit: minutes) 4. Layout correction factor Formula and steps for calculating the number of reciprocating cycles of the rotating spray bar 5: 1. Calculate the required rotation angle: Rotation angle = 2 × arcsine (dust suppression coverage width / (2 × effective spray distance)) 2. Calculate the time for a single reciprocating cycle: Single cycle time = (2 × rotation angle) / spray boom rotation speed 3. Calculate the maximum possible number of iterations: Maximum number of cycles = (Rated operation time / Single cycle time) rounded down 4. Calculate the necessary number of cycles based on the blast hole: Required number of cycles = Number of blast holes × Layout correction factor 5. Determine the final water-saving target number of cycles: The number of cycles of the rotary spray boom 5 reciprocating = minimum value (necessary number of cycles, maximum number of cycles) During operation, the operator inputs the following on the touchscreen: dust suppression coverage width / blasting width: 50 m, number of blasting holes N_p = 5, and notes that the blasting holes are relatively concentrated (average spacing < 20 m). After receiving these parameters, the MCU controller starts the parameter analysis module to perform calculations: the calculation result is the number of times the rotating spray boom 5 swings back and forth.
[0042] The system stops after executing 6 cycles. This case demonstrates that the algorithm can automatically convert operator-input field parameters (such as coverage width, number and angle of blast holes, etc.) into precise equipment execution instructions (6 cycles). This allows the system to intelligently decide to stop operations in advance while ensuring that the core dust suppression area (blast holes) is effectively covered, achieving an optimal balance between dust suppression effect and water saving benefits, and ensuring dust suppression without blind spots.
[0043] Reference Figure 2 The workflow is as follows: In smaller mines, the blasting area is 80 meters long and 50 meters wide. Before the operation begins, the operator sets the number of cycles N or the field parameters through the parameter setting device 6, which is a touch screen in this example.
[0044] After the dust suppression operation is started, the MCU controller 7 closes the exhaust valve 2, the compressor pressurizes the dust suppression vehicle tank to the predetermined pressure, the drain valve 4 is opened, and the rotating spray bar 5 is started to swing.
[0045] The MCU controller 7 monitors the number of swing cycles in real time via an encoder or position sensor.
[0046] When the count reaches N, the MCU controller 7 immediately opens the exhaust valve 2, closes the water discharge valve 4, stops water spraying, and restores other relevant parameters to their initial state, preparing for the next pressurization and operation. Because the blasting area is small, the tank retains approximately 50%-60% of its total capacity at this point. This water is saved, and without additional water replenishment, the tank can be repressurized after adjusting the vehicle's position for another complete operation. This avoids the waste of time and fuel caused by the dust suppression truck having to return from the mine to the water station for refilling.
[0047] After the dust suppression vehicle is refilled with water, the remaining water and the newly added water are used together for the next operation, which improves the water resource utilization rate.
[0048] It should be noted that the effective spraying distance in the above calculations already takes into account the rated pressure conditions inside the tank. During operation, the operator only needs to place the dust suppression vehicle at a position no more than R away from the edge of the blasting area; there is no need to additionally input the "actual distance from the dust suppression vehicle to the blasting point". This invention utilizes the physical characteristic that the pressure inside the tank decreases as the water volume decreases during water spraying, and the actual range gradually shortens. By controlling the number of cycles, the water spraying is actively interrupted when the pressure can still maintain the effective range (usually not less than 50% of the initial range), thereby ensuring the coverage effect while saving water. Beneficial effects
[0049] Quantitative water saving: By pre-setting the number of cycles, it actively retains 10% to 30% of the water in the tank, and the water saving rate per operation can reach more than 21% in actual tests.
[0050] To ensure dust suppression effectiveness: the interruption point is set before the range is still greater than the effective coverage threshold (50% of the initial range) to avoid ineffective spraying and ensure that the core area of the explosion zone is effectively covered.
[0051] Extended operating range: The reserved water is added to the next water replenishment, reducing the frequency of water replenishment, which is especially suitable for remote and water-scarce areas of mines.
[0052] Adaptive operation: It can automatically calculate the optimal number of cycles based on different hole layout parameters at the blasting site, eliminating the need for repeated manual trial and error.
[0053] This invention controls the termination of water spraying by using "completion of dust suppression coverage" as the criterion, achieving a balance between effectiveness and water conservation. Its core control parameter, the number of swing cycles required for effective coverage, can be obtained through experimental calibration or adaptive calculation based on on-site parameters. The hardware only requires adding cycle counting and automatic valve control to existing dust suppression vehicles, resulting in minimal modifications, high reliability, and applicability to both new construction and retrofitting of various pneumatic dust suppression vehicles. It is particularly suitable for water-scarce mining areas and has promising prospects for widespread application.
Claims
1. A water-saving system for a dust suppression vehicle used in mining blasting, characterized in that, include: Tank (1); Exhaust valve (2), installed on the top of tank (1); Water outlet pipe (3), connected to tank (1); Water drain valve (4), installed on water outlet pipe (3); Rotary spray bar (5), rotatably connected to the end of water outlet pipe (3), capable of horizontal reciprocating swing; Parameter setting device (6), used to set or store operation control parameters; MCU controller (7), connected to the drive motors of parameter setting device (6), exhaust valve (2), water drain valve (4) and rotary spray bar (5) respectively; The MCU controller (7) is configured to: obtain the target swing cycle number N provided by parameter setting device (6), and after the rotary spray bar (5) completes N complete reciprocating swings, control the closing of water drain valve (4) and opening of exhaust valve (2) to terminate water spraying and retain the remaining water in tank (1).
2. A water-saving method for a dust suppression vehicle used in mine blasting, based on the system described in claim 1, characterized in that, Includes the following steps: Step Step 1: Set the number of reciprocating swing cycles N of the rotating spray bar (5) through the parameter setting device (6); Step 2: Start the blasting dust suppression operation, the MCU controller (7) controls the exhaust valve (2) to close and the drain valve (4) to open, and drives the rotating spray bar (5) to reciprocate; Step 3: Count the number of reciprocating swing cycles of the rotating spray bar (5) in real time. When the cumulative number reaches the preset number of cycles N, the MCU controller (7) controls the drain valve (4) to close and the exhaust valve (2) to open, and terminates the water spraying, so that a part of the water in the tank (1) is retained for the next operation.
3. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 2, characterized in that, The preset number of reciprocating swing cycles N is physically defined as the minimum number of reciprocating swings required for the rotating spray bar (5) to complete the effective dust suppression coverage of the blasting area from the start of swinging.
4. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 2 or 3, characterized in that, The method includes a curing cycle count mode, which further includes: determining the minimum number of reciprocating swing cycles N0 required for the rotating spray bar (5) to effectively cover the blasting area under the current fixed operating conditions through on-site test calibration, and storing it in the MCU controller (7) in advance through the parameter setting device (6); during operation, when the number of swings of the rotating spray bar (5) reaches N0, the MCU controller (7) determines that the dust suppression has been completed and terminates the water spraying.
5. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 2 or 3, characterized in that, The method includes an adaptive calculation mode, which further includes: Step B1: Inputting field parameters through the parameter setting device (6), including blasting width W, number of blasting holes M, and blasting point layout coefficient L; Step B2: The MCU controller (7) reads the internally stored equipment parameters, including effective spray distance R, spray boom rotational angular velocity ω, and rated air pressure drop time Tmax; Step B3: Calculating the rotation angle θ required for a single coverage of the rotating spray boom (5) based on the blasting width W and effective spray distance R; Step B4: Calculating the time Tcycle required for the rotating spray boom (5) to complete one complete reciprocating swing based on the rotation angle θ and spray boom rotational angular velocity ω; Step B5: Calculating the minimum number of swings Nneed required to ensure coverage of all blasting points based on the number of blasting holes M and layout coefficient L; Step B6: Calculating the maximum number of swings Nmax allowed by the system based on the rated air pressure drop time Tmax and single cycle time Tcycle; Step B7: Determining the final number of execution cycles N = min(Nneed, Nmax); Step B8: Perform water spraying according to steps two to three of claim 2, and terminate water spraying after completing N swings.
6. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 5, characterized in that, The formula for calculating the rotation angle θ in step B3 is: θ = 2 × arctan( (W / 2) / R ); the formula for calculating the single reciprocating cycle time Tcycle in step B4 is: Tcycle = (2 × θ) / ω.
7. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 5, characterized in that, The minimum number of swings Nneed mentioned in step B5 is calculated by multiplying the number of blast holes M by the layout correction coefficient L and then rounding up; the maximum number of swings Nmax mentioned in step B6 is calculated by dividing the rated pressure effective time Tmax by the single cycle time Tcycle and then rounding down.
8. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 2, characterized in that, After the water spraying stops, the amount of water remaining in the tank (1) is between 10% and 50% of the total volume of the tank.
9. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 5, characterized in that, The effective spray distance R is the maximum straight distance that can achieve effective dust suppression spraying when the tank (1) is filled with the rated working pressure through the factory calibration test. This R value is stored in the MCU controller (7) in advance and does not require on-site input by the operator.
10. A water-saving method for a dust suppression vehicle used in mine blasting according to claim 5, characterized in that, The blasting point layout coefficient L is determined according to the blasting point layout shape: 1.0 for concentrated layout, 1.5 for dispersed layout, and 1.2 for linear layout.