A mine automatic double-valve dry fog host and dust suppression method using the same

Abstract

An automatic double-valve dry mist main unit for underground mines and a dust suppression method using the same, wherein the automatic double-valve dry mist main unit for underground mines comprises a door frame arranged across the conveyor belt, wherein the door frame is provided with a distance measuring mechanism and an infrared imaging mechanism directly above the conveyor belt; behind the door frame, a plurality of dust suppression nozzles are arranged at intervals above the conveyor belt along the conveying direction of the conveyor belt, and the dust suppression nozzles comprise a valve branch mechanism connected to the main liquid pipe, and the valve branch mechanism can adjust the liquid intake of the two fan-shaped nozzles, and the total liquid intake of the two fan-shaped nozzles is always the same; the door frame is also provided with a main control terminal, and the input end of the main control terminal is connected to the distance measuring mechanism and the infrared imaging mechanism, and the output end of the main control terminal is connected to the valve branch mechanism. Through the above device, the side spray amount can be adjusted according to the coal block transportation amount and temperature changes, and at the same time, a method is designed based on the above device, which can freely control the side spray amount by the main control terminal.

Description

Technical Field

[0001] The present invention relates to the technical field of underground dust suppression methods, and in particular to an underground automatic double-valve dry fog host and a dust suppression method using the same. Background Art

[0002] In the process of coal mining, coal blocks need to be transported by conveyor belts. During transportation, in order to cool the coal blocks, multiple dust suppression nozzles need to be set at intervals above the conveyor belt. Conventional dust suppression nozzles are generally set to spray in a circular shape and evenly spray above the coal blocks. However, during the transportation of coal blocks, the coal blocks are not evenly distributed on the conveyor belt, and the temperature is also uneven. Therefore, the above-mentioned uniform spraying method cannot adaptively adjust the spray according to the temperature and the importance of dust suppression. The existing method generally increases the spray volume, but this method will obviously lead to an increase in water consumption. Summary of the invention

[0003] In order to solve the above-mentioned problem of being unable to adaptively adjust according to the coal block transportation volume and temperature conditions by increasing the spray volume, the present invention provides an underground automatic double-valve dry fog host and a dust suppression method using the same.

[0004] The technical solution of the present invention is as follows:

[0005] An underground automatic double-valve dry mist host comprises a door frame arranged across a conveyor belt, wherein the door frame is provided with a plurality of distance measuring mechanisms arranged in a horizontal direction directly above the conveyor belt, and the arrangement direction of the plurality of distance measuring mechanisms is perpendicular to the conveying direction of the conveyor belt, and the plurality of distance measuring mechanisms are arranged symmetrically with respect to the center line of the conveyor belt, and the same number of distance measuring mechanisms are arranged on both sides of the center line of the conveyor belt;

[0006] The door frame is also provided with an infrared imaging mechanism above the center line of the conveyor belt;

[0007] Behind the door frame, a plurality of dust suppression nozzles are arranged at intervals above the conveyor belt along the conveying direction of the conveyor belt, and the dust suppression nozzles include a valve branch mechanism connected to the main liquid pipe, and a lower cross frame is arranged below the valve branch mechanism, and two fan-shaped nozzles connected to the valve branch mechanism are symmetrically arranged below the lower cross frame about the center line of the conveyor belt;

[0008] The valve mechanism can adjust the liquid inflow of the two fan-shaped nozzles, and the total liquid inflow of the two fan-shaped nozzles is always the same;

[0009] The door frame is also provided with a main control terminal, and the input end of the main control terminal is connected with the distance measuring mechanism and the infrared imaging mechanism, and the output end of the main control terminal is connected with the valve branch mechanism.

[0010] By setting up a distance measuring mechanism and an infrared imaging mechanism, the transportation volume and temperature of the coal blocks on the conveyor belt can be measured, and the spray volume of the two fan-shaped nozzles can be adjusted through the valve distribution mechanism. Therefore, on this basis, the total spray volume can be reduced to meet the necessary adaptive adjustment requirements.

[0011] The specific structure of the valve mechanism is that the valve mechanism includes a valve body, and the valve body includes an inlet and two outlets, and an adjustment plate controlled by an adjustment output device is arranged between the inlet and the two outlets, and the adjustment plate is provided with a rectangular adjustment hole, and the liquid can only pass through the overlapped part of the outlet and the rectangular adjustment hole. No matter how to adjust, the total liquid output is the same, but the difference is that the spray volume can be changed side by side according to the actual situation.

[0012] In order to completely cover the conveyor belt, the length direction of the spray area of ​​the fan-shaped nozzle falling on the conveyor belt is parallel to the length direction of the conveyor belt, and the width of the spray area of ​​the fan-shaped nozzle falling on the conveyor belt is not less than half of the width of the conveyor belt.

[0013] The above-mentioned infrared imaging mechanism is arranged in such a way that the width of the imaging area of ​​the infrared imaging mechanism is limited above the conveyor belt and is the same width as the conveyor belt, and the length of the imaging area is the same as the length of the spray of the fan-shaped nozzle falling on the conveyor belt, and the imaging area does not overlap with the spray area of ​​the fan-shaped nozzle falling on the conveyor belt.

[0014] A dust suppression method for an underground mine automatic double-valve dry mist host uses the above-mentioned underground mine automatic double-valve dry mist host and includes the following steps:

[0015] S1. Input parameters and set:

[0016] Switching time

[0017] First delay time

[0018] Second delay time

[0019] Wherein, v is the preset speed of the conveyor belt, x is the length of the fan-shaped nozzle falling in the spray area of ​​the conveyor belt, y is the distance length between the distance measuring mechanism and the infrared imaging mechanism, z is the distance length between the distance measuring mechanism and the nearest fan-shaped nozzle, and the distance between adjacent fan-shaped nozzles along the conveying direction of the conveyor belt is also x.

[0020] S2. The main control terminal starts the conveyor belt, and takes the start time as the starting time T, obtains the data of the distance measuring mechanism within the switching time period t every switching time period t, and calculates the first influence ratio C according to the following formula:

[0021] C = J / K;

[0022] Wherein, J is the sum of the values ​​of all distance measuring mechanisms on the left side of the conveyor belt within the switching time t, and K is the sum of the values ​​of all distance measuring mechanisms on the right side of the conveyor belt within the switching time t;

[0023] The first influence ratios C1, C2, C3, ..., Cn obtained each time are sequentially stored in the first data set;

[0024] After waiting for the first delay time m based on the time T, the captured image of the infrared imaging mechanism in the imaging area is obtained every switching time t, and then the second influence ratio D is calculated according to the following formula:

[0025] D = Q / E;

[0026] Among them, Q is the total gray value of the image collected by the infrared imaging mechanism on the left side of the conveyor belt, and E is the total gray value of the image collected by the infrared imaging mechanism on the right side of the conveyor belt;

[0027] The first influence ratios D1, D2, D3, ..., Dn obtained each time are sequentially stored in the second data set;

[0028] After waiting for the second delay time n based on the time T, the extension length F of the adjustment output device of the dust suppression nozzle closest to the distance measuring mechanism is controlled every switching time t, and the calculation formula of F is:

[0029] F = (C / D) * S, S is the preset influencing factor;

[0030] Except for the first dust suppression nozzle, other dust suppression nozzles use the extension length F of the adjustment output device of the dust suppression nozzle at the previous position every switching time t.

[0031] As a preferred solution, in step S2, S is equal to 1.

[0032] In order to ensure that the coal blocks do not spontaneously combust, in step S2, S is a linearly changing value.

[0033] In order to deal with various special situations, step S2 also includes the following emergency response processing modules:

[0034] Set a preset grayscale threshold set (P, U);

[0035] If the total grayscale value of any part of the grayscale image is higher than the preset value U, the first dust suppression nozzle controls the adjustment output device to close the outlet on the different side from it, and the other dust suppression nozzles proceed with the subsequent steps normally;

[0036] If the total grayscale values ​​of the two grayscale images are both higher than the preset value U, all dust suppression nozzles that perform actions according to the parameter D adopt the extension length value F in step S2;

[0037] If the total grayscale values ​​of the two grayscale images are both lower than the preset value P, all dust suppression nozzles that perform actions according to the parameter C use the extension length value C in step S2.

[0038] The beneficial effects of the present invention are: the present invention is an underground automatic double-valve dry fog main unit and a dust suppression method using the same, which is different from the conventional dust suppression method. The device can firstly adjust the spray amount on each side according to the changes in temperature and transportation volume, and the above-mentioned influence amount can be changed according to the actual situation. Therefore, the above-mentioned device can be distinguished from the conventional dust suppression device, and can be adaptively changed at any time according to the actual transportation situation. Therefore, it can be freely adjusted without increasing the total spray volume, and the change method is diverse and can be freely adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0040] In the attached picture:

[0041] Figure 1 It is a schematic diagram of the top view structure of the present invention;

[0042] Figure 2 This is a schematic diagram of the valve mechanism structure of the present invention;

[0043] Figure 3 The schematic diagram of the valve structure of the present invention (with Figure 2 different states);

[0044] Figure 4 It is a schematic cross-sectional view of the valve mechanism of the present invention;

[0045] Figure 5 The cross-sectional structure diagram of the valve mechanism of the present invention (with Figure 4 different states);

[0046] Figure 6 This is a schematic diagram of the structure of the adjustment plate of the present invention;

[0047] Figure 7 This is a schematic diagram of the main structure of the valve of the present invention;

[0048] The components represented by the reference numerals in the figure are:

[0049] 1. Conveyor belt; 2. Door frame; 3. Distance measuring mechanism; 4. Infrared imaging mechanism; 5. Dust suppression nozzle; 51. Valve sub-mechanism; 511. Valve sub-body; 512. Pipe inlet; 513. Pipe outlet; 514. Adjustment plate; 515. Adjustment output device; 52. Lower cross frame. DETAILED DESCRIPTION

[0050] like Figure 1 The shown underground automatic double-valve dry mist host includes a door frame 2 arranged across the conveyor belt 1, and the door frame 2 is provided with a plurality of distance measuring mechanisms 3 arranged in a horizontal direction directly above the conveyor belt 1, and the arrangement direction of the plurality of distance measuring mechanisms 3 is perpendicular to the conveying direction of the conveyor belt 1, so that the coal blocks on the same vertical plane can be measured, and the cross-sectional area values ​​of all the coal blocks on this vertical plane can be obtained, and the more the number of the above-mentioned distance measuring mechanisms 3 and the denser the arrangement, the more accurate the area value. Afterwards, it should be noted that in order to facilitate the separate calculation of the areas of the left and right sides of the conveyor belt 1, it should be noted that all the above-mentioned distance measuring mechanisms 3 are arranged symmetrically with respect to the center line of the conveyor belt 1, and the same number is arranged on both sides of the center line of the conveyor belt 1. Therefore, in this way, the cross-sectional area of ​​the coal blocks on the left and right sides of the conveyor belt 1 can be calculated, and, in the case of superimposing the above-mentioned cross-sectional areas, the volume of the coal blocks on the conveyor belt 1 can be roughly calculated, and the smaller the interval of the superimposed cross-sectional areas, the more accurate the volume calculation.

[0051] Afterwards, the door frame 2 is further provided with an infrared imaging mechanism 4 above the center line of the conveyor belt 1. The infrared imaging mechanism 4 is capable of taking pictures, and the taken picture is a temperature image. The temperature value can be calculated by only performing grayscale processing on the temperature image. The infrared imaging mechanism 4 is arranged in the middle position. By cutting the picture, the total temperature value of the left and right sides can also be calculated.

[0052] It should be noted that, in the above structure, the infrared imaging mechanism 4 is arranged in such a way that the width of the imaging area of ​​the infrared imaging mechanism 4 is limited to above the conveyor belt 1 and is the same width as the conveyor belt 1, and the length of the imaging area is the same as the length of the spray of the fan-shaped nozzle falling on the conveyor belt 1, and the imaging area does not overlap with the spray area of ​​the fan-shaped nozzle falling on the conveyor belt 1. Through the above method, the value range can be limited to facilitate the subsequent control of the spray amount according to this value.

[0053] Afterwards, further, behind the door frame 2, a plurality of dust suppression nozzles 5 are arranged at intervals above the conveyor belt 1 along the conveying direction of the conveyor belt 1, and the dust suppression nozzles 5 include a valve branch mechanism 51 connected to the main liquid pipe, and a lower cross frame 52 is arranged below the valve branch mechanism 51, and two fan-shaped nozzles connected to the valve branch mechanism 51 are symmetrically arranged under the lower cross frame 52 about the center line of the conveyor belt 1, and the valve branch mechanism 51 can adjust the liquid inlet amount of the two fan-shaped nozzles, and the total liquid inlet amount of the two fan-shaped nozzles is always the same. In this way, the spray amount on the left and right sides of the conveyor belt 1 can be adjusted, and then it can be adjusted according to actual conditions. For example, in the case of uneven temperature or uneven volume, the spray amount can be adjusted in the above manner to achieve the best spray effect. Compared with the method of directly increasing the total spray amount, this method is obviously more reasonable.

[0054] Afterwards, in order to realize automatic control, the door frame 2 is also provided with a main control terminal, and the input end of the main control terminal is connected to the distance measuring mechanism 3 and the infrared imaging mechanism 4, and the output end of the main control terminal is connected to the valve branch mechanism 51. Through the parameter values ​​of the distance measuring mechanism 3 and the infrared imaging mechanism 4, the valve branch mechanism can be controlled to operate, thereby adjusting the spray amount on the left and right sides of the conveyor belt 1.

[0055] It should be noted that in the above structure, Figure 2-7 As shown, the specific structure of the valve mechanism is that the valve sub-mechanism 51 includes a valve sub-body 511, and the valve sub-body 511 includes an inlet 512 and two outlets 513, wherein the inlet 512 is connected to the normal main pipe, and the outlet 513 is connected to the fan-shaped nozzle, and an adjustment plate 514 controlled by an adjustment output 515 is arranged between the inlet 512 and the two outlets 513, and the adjustment plate 514 is provided with a rectangular adjustment hole, and the liquid can only pass through the overlapping part of the outlet 513 and the rectangular adjustment hole. No matter how it is adjusted, the total liquid output is the same, but the difference is that the spray volume can be changed side by side according to the actual situation, the difference is as follows Figure 2 , 3 As shown, in the process of moving the position of the rectangular adjustment hole, staggered holes can be formed, and in this way, the liquid output of the left and right fan-shaped nozzles can be adjusted, so that different sizes of spray volumes can be formed on the left and right sides of the conveyor belt 1, and the adjustment output device 515 can be set to a telescopic electric cylinder. By adjusting the extended length of the telescopic electric cylinder, the adjustment effect of the above-mentioned adjustment plate 514 can be achieved and its position can be changed.

[0056] Finally, it should be noted that in order to completely cover the conveyor belt, the length direction of the spray area where the fan-shaped nozzle falls on the conveyor belt 1 is parallel to the length direction of the conveyor belt 1, and the width of the spray area where the fan-shaped nozzle falls on the conveyor belt 1 is not less than half of the width of the conveyor belt 1, that is, to ensure complete coverage and ensure that the spray can cool down or suppress dust on all coal blocks.

[0057] The above-mentioned device can be used to measure the transportation volume and temperature of the coal blocks on the conveyor belt 1 by setting up a distance measuring mechanism 3 and an infrared imaging mechanism 4, and then the spray volume of the two fan-shaped nozzles can be adjusted through the valve distribution mechanism 51. Therefore, on this basis, the total spray volume can be reduced to meet the necessary adaptive adjustment requirements.

[0058] Afterwards, a dust suppression method for an underground mine automatic double-valve dry fog host is also disclosed, using the above-mentioned underground mine automatic double-valve dry fog host, and comprising the following steps:

[0059] S1. Input parameters and set:

[0060] Switching time

[0061] First delay time

[0062] Second delay time

[0063] In order to ensure that the volume temperature of coal blocks within the same range can be compared with each other and the spray amount can be controlled on the left and right, the above-mentioned delay design is necessary. Under normal circumstances, the coal blocks first pass through the distance measuring mechanism, and then the conveyor belt 1 passes through the infrared imaging mechanism. This process requires a delay. After that, the coal blocks continue to move until they reach the fan-shaped nozzle position, which also requires a delay. In order to facilitate parameter setting, the coal blocks in a certain area are divided and their center is used as the standard. That is to say, within the switching time t, all the coal blocks passing through the distance measuring mechanism 3 are combined into one area, and after the center of the coal blocks in this area reaches the infrared imaging mechanism 4, the picture is acquired, and after the center of the coal blocks in this area reaches the position of the first dust suppression nozzle 5, spraying is carried out.

[0064] Among them, v is the preset speed of the conveyor belt 1, x is the length of the fan-shaped nozzle falling in the spray area of ​​the conveyor belt 1, y is the distance length between the distance measuring mechanism 3 and the infrared imaging mechanism 4, z is the distance length between the distance measuring mechanism 3 and the closest fan-shaped nozzle, and the distance between adjacent fan-shaped nozzles along the conveying direction of the conveyor belt 1 is also x. The above values ​​can be preset according to needs when installing the equipment.

[0065] S2, the main control terminal turns on the conveyor belt 1, and takes the start time as the starting time T, and obtains the data of the distance measuring mechanism 3 within the switching time period t every switching time t, and within the switching time t, the distance measuring mechanism 3 can generate multiple values, and the smaller the interval length of the generated values, the higher the detection accuracy will be, so it needs to be set according to the needs, and then the first influence ratio C is calculated according to the following formula:

[0066] C = J / K;

[0067] Wherein, J is the sum of the values ​​of all distance measuring mechanisms 3 on the left side of the conveyor belt 1 within the switching time t, and K is the sum of the values ​​of all distance measuring mechanisms 3 on the right side of the conveyor belt 1 within the switching time t;

[0068] The first influence ratios C1, C2, C3, ..., Cn obtained each time are sequentially stored in the first data set;

[0069] The volume comparison between the left and right sides of the conveyor belt 1 can be calculated in the above manner, and then the spray amount on the left and right sides can be controlled according to the volume comparison.

[0070] After waiting for the first delay time m based on the time T, the captured image of the infrared imaging mechanism 4 in the imaging area is obtained every switching time t, and then the second influence ratio D is calculated according to the following formula:

[0071] D = Q / E;

[0072] Wherein, Q is the total gray value of the image captured by the infrared imaging mechanism 4 on the left side of the conveyor belt 1, and E is the total gray value of the image captured by the infrared imaging mechanism 4 on the right side of the conveyor belt 1;

[0073] The first influence ratios D1, D2, D3, ..., Dn obtained each time are sequentially stored in the second data set;

[0074] In this way, the total temperature of the left and right sides of the conveyor belt 1 can be calculated, and the spray amount on the left and right sides can be controlled according to the total temperature.

[0075] After waiting for the second delay time n based on the time T, the extension length F of the adjustment output device 515 of the dust suppression nozzle 5 closest to the distance measuring mechanism 3 is controlled every switching time t, and the calculation formula of F is:

[0076] F = (C / D) * S, S is the preset influencing factor;

[0077] Through the above method, by combining the first data set and the second data set, the spray amount on the left and right sides can be controlled according to the volume comparison and temperature comparison method at the same time, and by adjusting the extension length F of the conveyor 515, the spray amount on the left and right sides reflected by the adjustment plate 514 can be directly controlled.

[0078] Except for the first dust suppression nozzle 5, the other dust suppression nozzles 5 use the extension length F of the adjustment output device 515 of the dust suppression nozzle 5 at the previous position every switching time t.

[0079] Generally, in step S2, S is equal to 1. That is, the temperature and volume are both normal and the change of the spray amount is considered.

[0080] However, in special cases, since the importance of dust suppression is far less than preventing spontaneous combustion, in order to ensure that coal blocks will not spontaneously combust, in step S2, S is a linearly changing value. That is to say, it is necessary to give priority to cooling, that is, the parameters of the first data set need to be considered, and then, as the spraying proceeds, the temperature drops to a certain level, and then dust suppression needs to be considered, so the cooling demand needs to be gradually reduced, that is, dust suppression is needed, and the above-mentioned linear change of S value is for the dust suppression nozzle 5, the S value of the first dust suppression nozzle 5 is a normal value, and under normal circumstances, the second dust suppression nozzle 5 needs to take the value of the first dust suppression nozzle 5, but in this case, we need to reduce the value of S, that is, reflected in the linear change, and the S value of the third and fourth ones is changed in turn.

[0081] Finally, in order to deal with various special situations, step S2 also includes the following emergency response processing module:

[0082] Set a preset grayscale threshold set (P, U);

[0083] If the total grayscale value of any part of the grayscale image is higher than the preset value U, the first dust suppression nozzle 5 controls the adjustment output 515 to close the outlet 513 on the different side from it, and the other dust suppression nozzles 5 proceed with subsequent steps normally; in this case, it means that the temperature on one side is too high, and in order to cool it down quickly, spraying is required first. At this time, there is no need to consider dust suppression, but rapid cooling is required.

[0084] If the total grayscale value of the two parts of the grayscale image is higher than the preset value U, all dust suppression nozzles 5 that perform actions according to this parameter D adopt the extension length value F in step S2; at this time, both parts are high in temperature, and the subsequent multiple dust suppression nozzles 5 need to be cooled down quickly.

[0085] If the total grayscale value of the two parts of the grayscale image is lower than the preset value P, all dust suppression nozzles 5 that perform actions according to this parameter n adopt an extension length value of C in step S2. Due to the low temperature, dust suppression is given priority, that is, during the dust suppression process, cooling can be performed by dust suppression spray without affecting the spray volume by temperature.

Claims

1. An automatic double-valve dry mist main unit for underground mines, characterized in that: The invention comprises a door frame (2) arranged across a conveyor belt (1), wherein the door frame (2) is provided with a plurality of distance measuring mechanisms (3) arranged in a horizontal direction directly above the conveyor belt (1), and the arrangement direction of the plurality of distance measuring mechanisms (3) is perpendicular to the conveying direction of the conveyor belt (1), and the plurality of distance measuring mechanisms (3) are arranged symmetrically with respect to the center line of the conveyor belt (1), and the same number of distance measuring mechanisms (3) are arranged on both sides of the center line of the conveyor belt (1); The door frame (2) is also provided with an infrared imaging mechanism (4) above the center line of the conveyor belt (1); Behind the door frame (2), a plurality of dust suppression nozzles (5) are arranged at intervals above the conveyor belt (1) along the conveying direction of the conveyor belt (1), and the dust suppression nozzles (5) include a valve branch mechanism (51) connected to the main liquid pipe, and a lower cross frame (52) is arranged below the valve branch mechanism (51), and two fan-shaped nozzles connected to the valve branch mechanism (51) are symmetrically arranged below the lower cross frame (52) about the center line of the conveyor belt (1); The valve mechanism (51) is capable of adjusting the liquid inflow of the two fan-shaped nozzles, and the total liquid inflow of the two fan-shaped nozzles is always the same; The door frame (2) is also provided with a main control terminal, and the input end of the main control terminal is connected to the distance measuring mechanism (3) and the infrared imaging mechanism (4), and the output end of the main control terminal is connected to the valve branch mechanism (51).

2. The automatic double-valve dry mist main unit for underground mines according to claim 1 is characterized in that: The valve sub-mechanism (51) comprises a valve sub-body (511), and the valve sub-body (511) comprises an inlet (512) and two outlets (513), and an adjustment plate (514) controlled by an adjustment output device (515) is arranged between the inlet (512) and the two outlets (513), and the adjustment plate (514) is provided with a rectangular adjustment hole, and liquid can only pass through the overlapping part between the outlet (513) and the rectangular adjustment hole.

3. The automatic double-valve dry mist main unit for underground mines according to claim 2 is characterized in that: The length direction of the spray area of ​​the fan-shaped nozzle falling on the conveyor belt (1) is parallel to the length direction of the conveyor belt (1), and the width of the spray area of ​​the fan-shaped nozzle falling on the conveyor belt (1) is not less than half of the width of the conveyor belt (1).

4. The automatic double-valve dry mist main unit for underground mines according to claim 3 is characterized in that: The width of the imaging area of ​​the infrared imaging mechanism (4) is limited to above the conveyor belt (1) and is the same width as the conveyor belt (1), and the length of the imaging area is the same as the length of the spray from the fan-shaped nozzle on the conveyor belt (1), and the imaging area does not overlap with the spray area from the fan-shaped nozzle on the conveyor belt (1).

5. A dust suppression method for an automatic double-valve dry fog host in a mine, characterized in that: The method of using the automatic double-valve dry fog host for underground mines as described in claim 4 includes the following steps: S1. Input parameters and set: Switching time First delay time Second delay time Wherein, v is the preset speed of the conveyor belt (1), x is the length of the spray area of ​​the fan-shaped nozzle falling on the conveyor belt (1), y is the distance length between the distance measuring mechanism (3) and the infrared imaging mechanism (4), z is the distance length between the distance measuring mechanism (3) and the nearest fan-shaped nozzle, and the distance between adjacent fan-shaped nozzles along the conveying direction of the conveyor belt is also x. S2, the main control terminal starts the conveyor belt, and takes the start time as the starting time T, obtains the data of the distance measuring mechanism (3) within the switching time period t every switching time period t, and calculates the first influence ratio C according to the following formula: C = J / K; Wherein, J is the sum of the values ​​of all the distance measuring mechanisms (3) on the left side of the conveyor belt within the switching time t, and K is the sum of the values ​​of all the distance measuring mechanisms (3) on the right side of the conveyor belt within the switching time t; The first influence ratios C1, C2, C3, ..., Cn obtained each time are sequentially stored in the first data set; After waiting for the first delay time m for a period of time T, the captured image of the infrared imaging mechanism (4) in the imaging area is obtained every t time period every switching time period t, and then the second influence ratio D is calculated according to the following formula: D = Q / E; Wherein, Q is the total gray value of the image captured by the infrared imaging mechanism (4) on the left side of the conveyor belt, and E is the total gray value of the image captured by the infrared imaging mechanism (4) on the right side of the conveyor belt; The first influence ratios D1, D2, D3, ..., Dn obtained each time are sequentially stored in the second data set; After waiting for the second delay time n based on the time T, the extension length F of the adjustment output device (515) of the dust suppression nozzle (5) closest to the distance measuring mechanism (3) is controlled every switching time t, and the calculation formula of F is: F = (C / D) * S, S is the preset influencing factor; In addition, except for the first dust suppression nozzle (5), the other dust suppression nozzles (5) use the extension length F of the adjustment output device (515) of the dust suppression nozzle (5) at the previous position every switching time t.

6. The dust suppression method of the automatic double-valve dry fog host in a mine according to claim 5 is characterized in that: In step S2, S is equal to 1.

7. The dust suppression method of the automatic double-valve dry fog host in a mine according to claim 6 is characterized in that: In step S2, S is a linearly changing value.

8. The dust suppression method of the automatic double-valve dry fog host in a mine according to claim 6 is characterized in that: Step S2 also includes the following emergency response processing module: Set a preset grayscale threshold set (P, U); If the total grayscale value of any part of the grayscale image is higher than the preset value U, the first dust suppression nozzle (5) controls the adjustment output device (515) to close the outlet (513) on the different side from the first dust suppression nozzle (5), and the other dust suppression nozzles (5) proceed with the subsequent steps normally; If the total grayscale values ​​of the two grayscale images are both higher than the preset value U, all dust suppression nozzles (5) that perform actions according to the parameter D use the extended length value F in step S2; If the total grayscale values ​​of the two grayscale images are both lower than the preset value P, all dust suppression nozzles (5) that perform actions according to the parameter C use the extension length value C in step S2.

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