A high manganese steel welding dust removal device based on dynamic concentration regulation and a running method thereof

Abstract

The application discloses a high manganese steel welding dust removal device based on dynamic concentration regulation and a running method thereof, relates to the technical field of high manganese steel welding dust removal, and comprises a dust removal box and a transmission cleaning assembly. The end of the dust removal box is connected with an air inlet pipe. The end of the air inlet pipe is connected with an electrostatic dust removal chamber. The transmission cleaning assembly is connected to the bottom of an induced fan. One side of the electrostatic dust removal chamber is connected with a spraying chamber. The end of the spraying pipe is connected with a flow control valve. The surface of the exhaust pipe on the side of the spraying chamber and the surface of the air inlet pipe on the side are both provided with concentration sensors. The high manganese steel welding dust removal device based on dynamic concentration regulation and the running method thereof can realize real-time monitoring of the concentration of welding dust and manganese vapor, dynamically adjust the rotating speed of the induced fan, the flow of the spraying liquid and the power of the motor, ensure that the device can efficiently remove pollutants under high-concentration working conditions, meet the dust removal demand under the maximum amount of dust, optimize resource utilization, reduce energy consumption and improve environmental protection performance.

Description

Technical Field

[0001] The present invention relates to the technical field of high manganese steel welding dust removal, in particular to a high manganese steel welding dust removal device based on dynamic concentration control and an operating method thereof. Background Art

[0002] High-manganese steel, with its excellent wear and impact resistance, is widely used in mining machinery, construction machinery, and the railway industry. It is particularly suitable for harsh working conditions such as low temperatures and high impact. Its self-hardening properties after welding further enhance its surface strength and extend its service life. However, the welding process of high-manganese steel produces large amounts of high-concentration smoke and highly toxic manganese vapor. These pollutants not only seriously pollute the welding environment but also pose a significant threat to the health of on-site operators.

[0003] Currently, most welding dust removal devices on the market are designed with fixed parameters, primarily for standard steel welding conditions. Existing devices are often unable to effectively address the large amounts of smoke and dust emissions and highly toxic manganese vapor unique to high-manganese steel welding. Furthermore, due to the dynamic nature of smoke and manganese vapor concentrations during high-manganese steel welding, traditional fixed dust removal equipment lacks real-time monitoring and dynamic control capabilities, making it difficult to guarantee effective dust removal. This leads to low dust removal efficiency, insufficient personal protection, and waste of resources.

[0004] Therefore, there is an urgent need to develop an efficient welding dust removal device specifically for the high manganese steel welding process, which can realize dynamic monitoring and real-time control of smoke and toxic gases, so as to effectively reduce the pollution of the working environment and ensure the health and safety of operators. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high manganese steel welding dust removal device based on dynamic concentration control and an operating method thereof, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high manganese steel welding dust removal device based on dynamic concentration control, comprising a dust removal box and a transmission cleaning assembly, the end of the dust removal box is connected to an air intake pipe, and an exhaust fan is arranged inside the air intake pipe, the end of the air intake pipe is connected to an electrostatic dust removal chamber, and dust removal sheets are distributed on one side of the interior of the electrostatic dust removal chamber, the transmission cleaning assembly is connected to the bottom of the exhaust fan, one side of the electrostatic dust removal chamber is connected to a spray chamber, and the top of the spray chamber is connected to a spray pipe, the end of the spray pipe is connected to a flow control valve, and the upper surface of the exhaust fan is connected to a variable frequency motor, the exhaust pipe surface on the side of the spray chamber and the side of the air intake pipe are both provided with concentration sensors, and the bottom of the spray chamber is connected to a waste liquid recovery pipeline.

[0007] Furthermore, the transmission cleaning assembly includes a transmission screw and a bevel gear set. The bevel gear set is provided at the bottom of the transmission screw, and the bevel gear set is provided inside the dustproof box.

[0008] Furthermore, the transmission cleaning assembly also includes a reciprocating screw, and the side of the bevel gear set is connected to the reciprocating screw, and the length of the reciprocating screw is adapted to the length of the dust removal sheet.

[0009] Furthermore, the transmission cleaning assembly also includes a movable base, the outer wall of the transmission screw is provided with a movable base, both ends of the movable base are rotatably connected with a corrugated sleeve, and the corrugated sleeve is provided on the outside of the reciprocating screw.

[0010] Furthermore, the transmission cleaning assembly also includes an air extraction rod rack, and the air extraction rod rack is fixed to the end of the movable base.

[0011] Furthermore, the transmission cleaning assembly also includes a dust removal head, and the side of the vacuum rod frame is connected to the dust removal head through a branch pipe.

[0012] Furthermore, the dust removal head is wrapped around the surface of the dust removal sheet, and the dust removal head and the dust removal sheet are arranged one to one.

[0013] Furthermore, the transmission cleaning assembly also includes an exhaust pipe, a dust collecting chamber, a dust filter and an exhaust pump. The bottom of the exhaust rod frame is connected to the exhaust pipe, and the end of the exhaust pipe is connected to the dust collecting chamber. A dust filter is provided on one side of the interior of the dust collecting chamber, and an exhaust pump is connected to one side of the dust collecting chamber.

[0014] Furthermore, the exhaust end of the vacuum pump is connected to the interior of the electrostatic precipitator chamber through a pipeline, and the exhaust end of the vacuum pump is located on the left side of the dust removal sheet.

[0015] An operating method, which is applied to the above-mentioned high manganese steel welding dust removal device based on dynamic concentration control, the operating method comprises the following steps:

[0016] Step 1: During welding, smoke and manganese vapor pass through the electrostatic precipitator chamber and the spray chamber in sequence from the air inlet pipe. The electrostatic precipitator chamber is used to capture fine particles in the welding smoke, and the spray chamber further removes manganese vapor, manganese oxides and residual gases by spraying adsorption liquid. The waste liquid generated by the spray is discharged from the waste liquid recovery pipeline, and the treated gas is discharged from the exhaust pipe on the side of the spray chamber.

[0017] The concentration sensor is used to monitor the inlet concentration C of smoke and manganese vapor in real time during welding. in and outlet concentration C out , and transmit concentration data to the system background;

[0018] Step 2: The system background dynamically calculates the concentration difference ΔC=Cin -C out and concentration error coefficient E c , dynamic calculation of induced fan speed and spray liquid flow, while the concentration difference formula ΔC: ΔC = C in -C out , C in is the inlet concentration of welding dust or manganese vapor, C out is the outlet concentration after treatment; the difference between the inlet and outlet concentrations reflects the actual removal capacity of the device;

[0019] Concentration error coefficient, which is used to quantify the deviation of removal effect:

[0020]

[0021] C target Target outlet concentration;

[0022] C out Actual outlet concentration;

[0023] Induced fan (3) speed control formula:

[0024]

[0025] N f : Current induced fan speed;

[0026] N min : The minimum allowable speed of the induced fan to prevent the fan speed from being too low to meet the basic dust removal requirements;

[0027] N max : The maximum allowable speed of the induced fan to limit the maximum speed of the fan to avoid energy waste and equipment overload;

[0028] N f0 : The basic speed of the induced fan, i.e. the normal speed at the initial operation;

[0029] Indicates the outlet concentration ratio, the ratio of the outlet concentration to the inlet concentration, reflecting the real-time dust removal effect. The higher the ratio, the worse the dust removal effect, and the speed needs to be increased;

[0030] E c : Concentration error coefficient, correction term for the deviation between real-time dust removal effect and target, the greater the error, the higher the speed will be;

[0031] C max : The maximum inlet concentration generated in high manganese steel welding, the design value is 80 mg / m 3; K1, K2, K3: weight coefficients are adjustable, K1: generally takes a value of 0.1 to 0.3 to adjust the sensitivity of the ratio of outlet to inlet concentration to the speed, K2: generally takes a value of 0.1 to 0.3 to adjust the response strength when the actual dust removal effect deviates from the target, K3: generally takes a value of 0.2 to 0.4 to adjust the response strength of the fan when the inlet concentration approaches the design maximum value;

[0032] Spray flow control formula:

[0033]

[0034] Q p : Current spray liquid flow rate;

[0035] Q p0 : basic spray liquid flow rate;

[0036] K4: Controls the effect of the ratio of outlet to inlet concentration on flow rate. The recommended value range is 0.1 to 0.3.

[0037] K5: The influence of control error coefficient on flow rate, the recommended value range is 0.1~0.3;

[0038] Step 3: Based on the calculation results of the induced fan speed formula and the spray flow control formula, the system background controls the frequency conversion motor and flow control valve in real time to adjust the spray liquid flow and induced fan speed.

[0039] The present invention provides a high manganese steel welding dust removal device based on dynamic concentration control and an operating method thereof, which has the following beneficial effects:

[0040] 1. This high-manganese steel welding dust removal device based on dynamic concentration control and its operation method monitors the concentration of welding smoke and manganese vapor in real time, dynamically adjusts the fan speed, spray liquid flow rate and motor power, ensuring that the device can efficiently remove pollutants under high-concentration conditions and meet the dust removal requirements under maximum smoke volume. At the same time, it optimizes resource utilization, reduces energy consumption, and improves environmental performance.

[0041] 2. The high manganese steel welding dust removal device based on dynamic concentration control and its operation method utilizes the rotation of the induced draft fan to transmit the dust removal head through the transmission screw, bevel gear set and reciprocating screw, so that the movable base carries the dust removal head to slide back and forth on the surface of the dust removal sheet, and uses the negative air pressure generated by the vacuum pump to continuously absorb the dust adsorbed on the surface of the dust removal sheet due to the electrostatic adsorption technology, so that the dust on the surface of the dust removal sheet is always difficult to accumulate, thereby always maintaining the adsorption effect of the dust removal sheet, and when the reciprocating screw rotates inside the electrostatic dust removal chamber, the corrugated sleeve extends during the reciprocating movement of the movable base, and the corrugated sleeve is always arranged on the outside of the reciprocating screw, thereby preventing the reciprocating screw from being exposed so that the dust in the flue gas adheres to its surface and affects the movement of the movable base. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 Figure 1 is a schematic diagram of the internal structure of a dust removal box of a high manganese steel welding dust removal device based on dynamic concentration regulation according to the present application;

[0043] Figure 2 Figure 2 is a schematic diagram of the external structure of a dust removal box of a high manganese steel welding dust removal device based on dynamic concentration regulation according to the present application;

[0044] Figure 3 Figure 3 is a schematic diagram of the internal structure of an electrostatic dust removal chamber of a high manganese steel welding dust removal device based on dynamic concentration regulation according to the present application;

[0045] Figure 4 Figure 4 is a schematic diagram of the internal structure of a spraying chamber of a high manganese steel welding dust removal device based on dynamic concentration regulation according to the present application;

[0046] Figure 5 Figure 5 is a schematic diagram of the side structure of a bevel gear set of a high manganese steel welding dust removal device based on dynamic concentration regulation according to the present application.

[0047] In the figure: 1, dust removal box; 2, air inlet pipe; 3, air induction fan; 4, electrostatic dust removal chamber; 5, dust removal sheet; 6, transmission cleaning assembly; 601, transmission screw rod; 602, bevel gear set; 603, reciprocating screw rod; 604, moving base; 605, air extraction rod holder; 606, dust removal head; 607, air extraction pipe; 608, dust collection chamber; 609, dust filter net; 610, air extraction pump; 7, spraying chamber; 8, spraying pipe; 9, concentration sensor; 10, waste liquid recovery pipeline; 11, corrugated sleeve. DETAILED DESCRIPTION

[0048] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0049] As Figure 1-Figure 5The application provides the technical scheme: a high manganese steel welding dust removal device based on dynamic concentration regulation, which comprises a dust removal box 1 and a transmission cleaning assembly 6. The end of the dust removal box 1 is connected with an air inlet pipe 2, and the inside of the air inlet pipe 2 is provided with an air guide fan 3. The end of the air inlet pipe 2 is connected with an electrostatic dust removal chamber 4, and the inside of the electrostatic dust removal chamber 4 is distributed with dust removal sheets 5 on one side. The transmission cleaning assembly 6 is connected to the bottom of the air guide fan 3. One side of the electrostatic dust removal chamber 4 is connected with a spraying chamber 7, and the top of the spraying chamber 7 is connected with a spraying pipe 8. The end of the spraying pipe 8 is connected with a flow control valve, and the upper surface of the air guide fan 3 is connected with a variable frequency motor. The surface of the exhaust pipe on the side of the spraying chamber 7 and the surface of the air inlet pipe 2 are both provided with concentration sensors 9, and the bottom of the spraying chamber 7 is connected with a waste liquid recovery pipeline 10. The transmission cleaning assembly 6 comprises a transmission screw rod 601 and a bevel gear set 602. The bottom of the transmission screw rod 601 is provided with the bevel gear set 602, and the bevel gear set 602 is arranged in a dustproof box. The transmission cleaning assembly 6 further comprises a reciprocating screw rod 603. The side of the bevel gear set 602 is connected with the reciprocating screw rod 603, and the length of the reciprocating screw rod 603 is adapted to the length of the dust removal sheet 5. The transmission cleaning assembly 6 further comprises a moving base 604. The outer wall of the transmission screw rod 601 is sleeved with the moving base 604. Both ends of the moving base 604 are rotatably connected with corrugated sleeves 11, and the corrugated sleeves 11 are sleeved on the outside of the reciprocating screw rod 603. The transmission cleaning assembly 6 further comprises an air suction rod frame 605. The end of the moving base 604 is fixedly connected with the air suction rod frame 605. The transmission cleaning assembly 6 further comprises a dust removal head 606. The side of the air suction rod frame 605 is connected with the dust removal head 606 through a branch pipe. The dust removal head 606 is wrapped on the surface of the dust removal sheet 5, and the dust removal head 606 and the dust removal sheet 5 are arranged in one-to-one mode. The transmission cleaning assembly 6 further comprises an air suction pipe 607, a dust collecting chamber 608, a dust filtering net 609 and an air suction pump 610. The bottom of the air suction rod frame 605 is connected with the air suction pipe 607, and the end of the air suction pipe 607 is connected with the dust collecting chamber 608. One side of the inside of the dust collecting chamber 608 is provided with the dust filtering net 609, and one side of the dust collecting chamber 608 is connected with the air suction pump 610. The exhaust end of the air suction pump 610 is connected to the inside of the electrostatic dust removal chamber 4 through a pipeline, and the position of the exhaust end of the air suction pump 610 is located on the left side of the dust removal sheet 5.

[0050] The specific operation is as follows: the fume generated by welding is guided by the induced ventilator 3 and enters the interior of the electrostatic precipitator chamber 4 through the air inlet pipe 2. In the process of the fume passing through the electrostatic precipitator chamber 4 and entering the interior of the spray chamber 7, the dust in the fume is adsorbed by the dust removal sheet 5. As the surface of the dust removal sheet 5 adsorbs more dust, the dust accumulates on its surface, thereby affecting the adsorption effect. To solve this problem, the present invention utilizes the rotation of the induced ventilator 3 to drive the transmission screw 601 to rotate, and the transmission screw 601 drives the reciprocating screw 603 to rotate through the bevel gear set 602, so that the mobile base 604 slides back and forth along the surface of the reciprocating screw 603, thereby carrying the dust removal head 606 through the suction rod frame 605 It slides back and forth on the surface of the dust removal sheet 5, and at the same time, the vacuum pump 610 is started to generate negative air pressure at the dust removal head 606 to absorb the dust on the surface of the dust removal sheet 5. After the dust is absorbed, it enters the dust collection chamber 608 along the vacuum rod frame 605 and the vacuum pipe 607. The dust is isolated by the dust filter 609, and the gas passes through the dust filter 609 and is discharged into the electrostatic precipitator chamber 4 from the exhaust end of the vacuum pump 610. In the process of the reciprocating movement of the movable base 604, the corrugated sleeve 11 is stretched accordingly. The corrugated sleeve 11 is always arranged on the outside of the reciprocating screw rod 603, thereby preventing the reciprocating screw rod 603 from being exposed so that the dust in the smoke adheres to its surface and affects the movement of the movable base 604.

[0051] Based on the above description, the present invention utilizes the rotation of the induced draft fan 3 to transmit the transmission screw 601, the bevel gear set 602, and the reciprocating screw 603 so that the movable base 604 carries the dust removal head 606 to slide back and forth on the surface of the dust removal sheet 5, and uses the negative air pressure generated by the vacuum pump 610 to continuously absorb the dust adsorbed on the surface of the dust removal sheet 5 due to the electrostatic adsorption technology, so that the dust on the surface of the dust removal sheet 5 is always difficult to accumulate, thereby always maintaining the adsorption effect of the dust removal sheet 5, and when the reciprocating screw 603 rotates inside the electrostatic dust removal chamber 4, the corrugated sleeve 11 extends during the reciprocating movement of the movable base 604, and the corrugated sleeve 11 is always sleeved on the outside of the reciprocating screw 603, thereby preventing the reciprocating screw 603 from being exposed so that the dust in the flue gas adheres to its surface and affects the movement of the movable base 604.

[0052] An operating method, which is applied to the above-mentioned high manganese steel welding dust removal device based on dynamic concentration control, the operating method comprises the following steps:

[0053] Step 1: During welding, smoke and manganese vapor pass through the electrostatic precipitator 4 and the spray chamber 7 from the air inlet pipe 2. The electrostatic precipitator 4 is used to capture fine particles in the welding smoke. The spray chamber 7 further removes manganese vapor, manganese oxides, and residual gases by spraying an adsorption liquid. The waste liquid generated by the spraying is discharged from the waste liquid recovery pipe 10, and the treated gas is discharged from the exhaust pipe on the side of the spray chamber 7.

[0054] The concentration sensor 9 monitors the inlet concentration C of smoke and manganese vapor in real time during welding. in and outlet concentration C out , and transmit concentration data to the system background;

[0055] Step 2: The system background dynamically calculates the concentration difference ΔC=C in -C out and concentration error coefficient E c , dynamically calculate the fan 3 speed and spray liquid flow rate, and the concentration difference formula ΔC: ΔC=C in -C out C in is the inlet concentration of welding fume or manganese vapor, C out is the outlet concentration after treatment; the difference between the inlet and outlet concentrations reflects the actual removal capacity of the device;

[0056] Concentration error coefficient, which is used to quantify the deviation of the removal effect:

[0057]

[0058] C target Target outlet concentration;

[0059] C out Actual outlet concentration;

[0060] Formula for controlling the speed of the induced fan (3):

[0061]

[0062] N f : Current speed of the exhaust fan (3);

[0063] N min : The minimum allowable speed of the induced fan to prevent the fan speed from being too low to meet the basic dust removal requirements;

[0064] N max : The maximum allowable speed of the induced fan is limited to avoid energy waste and equipment overload;

[0065] N f0 : The basic speed of the induced fan (3), i.e. the normal speed during initial operation;

[0066] Indicates the ratio of outlet concentration to inlet concentration, reflecting the real-time dust removal effect. The higher the ratio, the worse the dust removal effect, and the higher the speed needs to be.

[0067] E c : Concentration error coefficient, a correction term for the deviation between the real-time dust removal effect and the target. The greater the error, the higher the speed will be.

[0068] C max :The maximum inlet concentration generated during high manganese steel welding is designed to be 80mg / m 3 ; K1, K2, K3: weight coefficients are adjustable, K1: generally takes a value of 0.1 to 0.3 to adjust the sensitivity of the ratio of outlet to inlet concentration to the speed, K2: generally takes a value of 0.1 to 0.3 to adjust the response strength when the actual dust removal effect deviates from the target, K3: generally takes a value of 0.2 to 0.4 to adjust the response strength of the fan when the inlet concentration approaches the design maximum value;

[0069] Spray flow control formula:

[0070]

[0071] Q p : Current spray liquid flow rate;

[0072] Q p0 : basic spray liquid flow rate;

[0073] K4: Controls the effect of the ratio of outlet to inlet concentration on flow rate. The recommended value range is 0.1 to 0.3.

[0074] K5: The influence of control error coefficient on flow rate, the recommended value range is 0.1~0.3;

[0075] Step 3: Based on the calculation results of the formula for the speed of the induced ventilator fan 3 and the spray flow control formula, the system background controls the variable frequency motor and flow control valve in real time to adjust the spray liquid flow and the speed of the induced ventilator fan 3;

[0076] The specific operation is as follows: during welding, smoke and manganese vapor pass through the electrostatic precipitator 4 and the spray chamber 7 from the air inlet pipe 2 in sequence. The electrostatic precipitator 4 is used to capture fine particles in the welding smoke. The spray chamber 7 further removes manganese vapor, manganese oxides and residual gas by spraying adsorption liquid. The waste liquid generated by the spraying is discharged from the waste liquid recovery pipe 10, and the treated gas is discharged from the exhaust pipe on the side of the spray chamber 7. Among them, the inlet concentration C of smoke and manganese vapor during welding is monitored in real time by the concentration sensor 9. in and outlet concentration C out , and transmit concentration data to the system background;

[0077] The dust removal device is based on a maximum dust emission rate of 6g / min and an inlet concentration of 80mg / m 3 The design ensures that the device can achieve efficient dust removal under extreme working conditions. Laser sensors are also installed inside the spray chamber 7 and the electrostatic precipitator chamber 4 to monitor the concentration changes of smoke and manganese vapor in real time and support continuous data collection and wireless transmission.

[0078] The system background dynamically calculates the concentration difference ΔC=C in -C out and concentration error coefficient E c , error correction term E c It is used to correct the concentration error. When the error is large (i.e., the removal effect is poor), the speed of the exhaust fan 3 will increase to enhance the adsorption capacity. When the error is close to 0, the exhaust fan 3 will operate in a normal state. The specific calculation process is as follows:

[0079] Concentration difference formula ΔC: ΔC=C in -C out

[0080] Among them, C in is the inlet concentration of welding fume or manganese vapor, C out is the outlet concentration after treatment; the difference between the inlet and outlet concentrations reflects the actual removal capacity of the device;

[0081] Concentration error coefficient (error coefficient is used to quantify the deviation of removal effect):

[0082]

[0083] C target Target outlet concentration;

[0084] C out Actual outlet concentration;

[0085] Formula for controlling the speed of exhaust fan 3:

[0086]

[0087] Current speed of the induced ventilator fan 3 (i.e., the speed of the induced ventilator fan 3 dynamically adjusted according to the pollutant concentration);

[0088] N min ,N max : The minimum and maximum speeds of the induced fan 3 are to ensure that the induced fan 3 operates within a reasonable range to prevent excessively high or low speeds from affecting the dust removal effect and energy consumption;

[0089] N f0 : Basic speed of the induced fan 3 (i.e., the minimum operating speed, the default speed when operating in the absence of pollutants or with low pollution);

[0090] Indicates the proportion of outlet concentration. The higher the value, the worse the removal effect, and the fan 3 needs to be accelerated. ∈ is a small positive number to prevent ∈ from being too small, causing the denominator to approach 0, thereby avoiding calculation errors or abnormal increase in the speed of the fan 3.

[0091] E c: Concentration error coefficient (indicates the deviation of removal efficiency, used to correct the speed of the induced ventilator fan 3;

[0092] C max :The maximum inlet concentration generated during high manganese steel welding is designed to be 80mg / m 3 ;

[0093] Inlet concentration normalization adjustment

[0094] This item ensures that the higher the inlet concentration, the faster the speed of the induced fan 3 increases to cope with higher pollution levels;

[0095] If C in ≈C max (i.e. the pollution concentration is close to the maximum value of 80mg / m 3 ),So Close to 1, it means that the speed adjustment of induced fan 3 will be significantly accelerated;

[0096] If C in If it is very low, the item has little impact on the speed of the induced fan 3, and energy saving is the main focus;

[0097] Implementation process:

[0098] Data monitoring: Use the monitoring module to collect the inlet concentration of welding fume and manganese vapor in real time (C in ) and outlet concentration (C out ), and compared with the maximum allowable concentration (C max );

[0099] Dynamic calculation: According to the concentration difference formula ΔC=C in -C out Calculate the amount of pollutant removed; according to the concentration error coefficient formula Calculate concentration deviation;

[0100] Parameter control: According to the speed control formula of induced fan 3:

[0101] Dynamically adjust the speed of exhaust fan 3;

[0102] According to the spray flow control formula:

[0103] Dynamically adjust the spray flow rate;

[0104] Pollutant Removal: Smoke and dust are captured in electrostatic precipitator 4, and further removed in spray chamber 7 by manganese vapor and residual pollutants. Based on the aforementioned control logic, the system backend controls the variable frequency motor and flow control valve in real time to adjust the spray liquid flow rate and the speed of induced draft fan 3. This dynamically adjusts the speed of induced draft fan 3 to ensure effective removal of smoke and manganese vapor at different concentration levels while minimizing energy consumption. When pollutant concentration is high and removal efficiency is poor, induced draft fan 3 accelerates to improve air extraction capacity. When pollutant concentration is low and removal efficiency is good, induced draft fan 3 slows down to reduce energy consumption.

[0105] In summary, the high-manganese steel welding dust removal device based on dynamic concentration control and its operation method, when in use, first, the smoke is captured by the electrostatic dust removal chamber 4 and the spray chamber 7 further removes manganese vapor and residual pollutants. Based on the above control logic, the system background controls the frequency conversion motor and flow control valve in real time to adjust the spray liquid flow and the speed of the induced ventilator 3, thereby dynamically adjusting the speed of the induced ventilator 3 to ensure that the smoke and manganese vapor can be effectively removed at different concentration levels;

[0106] When the induced draft fan 3 rotates, the transmission screw 601, the bevel gear set 602, and the reciprocating screw 603 drive the movable base 604 to carry the dust removal head 606 to slide back and forth on the surface of the dust removal sheet 5, and the negative air pressure generated by the vacuum pump 610 is used to continuously absorb the dust adsorbed on the surface of the dust removal sheet 5 due to the electrostatic adsorption technology, so that the dust on the surface of the dust removal sheet 5 is always difficult to accumulate, thereby always maintaining the adsorption effect of the dust removal sheet 5, and when the reciprocating screw 603 rotates inside the electrostatic dust removal chamber 4, the corrugated sleeve 11 extends during the reciprocating movement of the movable base 604. The corrugated sleeve 11 is always mounted on the outside of the reciprocating screw 603, thereby preventing the reciprocating screw 603 from being exposed so that the dust in the flue gas adheres to its surface and affects the movement of the movable base 604.

[0107] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A high manganese steel welding dust removal device based on dynamic concentration control, comprising a dust removal box (1) and a transmission cleaning assembly (6), characterized in that: The end of the dust removal box (1) is connected to an air intake pipe (2), and an induced draft fan (3) is provided inside the air intake pipe (2); the end of the air intake pipe (2) is connected to an electrostatic dust removal chamber (4), and dust removal sheets (5) are distributed on one side of the interior of the electrostatic dust removal chamber (4); the transmission cleaning component (6) is connected to the bottom of the induced draft fan (3); one side of the electrostatic dust removal chamber (4) is connected to a spray chamber (7), and the top of the spray chamber (7) is connected to a spray pipe (8), and the end of the spray pipe (8) is connected to the The spray chamber (7) is connected to a flow control valve, and the upper surface of the exhaust fan (3) is connected to a variable frequency motor. The exhaust pipe surface on the side of the spray chamber (7) and the side of the intake pipe (2) are both provided with a concentration sensor (9), and the bottom of the spray chamber (7) is connected to a waste liquid recovery pipe (10). The transmission cleaning component (6) includes a transmission screw (601) and a bevel gear set (602). The bottom of the transmission screw (601) is provided with a bevel gear set (602), and the bevel gear set (602) is provided on the dustproof Inside the box, the transmission cleaning assembly (6) further includes a reciprocating screw (603), the side of the bevel gear set (602) is connected to the reciprocating screw (603), and the length of the reciprocating screw (603) is adapted to the length of the dust removal sheet (5), the transmission cleaning assembly (6) further includes a movable base (604), the outer wall of the transmission screw (601) is provided with a movable base (604), and the two ends of the movable base (604) are rotatably connected to a corrugated sleeve (11), and the corrugated sleeve (11) is 1) is sleeved on the outside of the reciprocating screw rod (603), the transmission cleaning assembly (6) further includes an air extraction rod frame (605), the end of the movable base (604) is fixed with the air extraction rod frame (605), the transmission cleaning assembly (6) further includes a dust removal head (606), the side of the air extraction rod frame (605) is connected to the dust removal head (606) through a branch pipe, the dust removal head (606) is wrapped around the surface of the dust removal sheet (5), and the dust removal head (606) and the dust removal sheet (5) are arranged one to one.

2. The high manganese steel welding dust removal device based on dynamic concentration control according to claim 1 is characterized in that: The transmission cleaning assembly (6) further comprises an air extraction pipe (607), a dust collecting chamber (608), a dust filter (609) and an air extraction pump (610). The bottom of the air extraction rod frame (605) is connected to the air extraction pipe (607), and the end of the air extraction pipe (607) is connected to the dust collecting chamber (608). A dust filter (609) is provided on one side of the interior of the dust collecting chamber (608), and an air extraction pump (610) is connected to one side of the dust collecting chamber (608).

3. The high manganese steel welding dust removal device based on dynamic concentration control according to claim 2 is characterized in that: The exhaust end of the air pump (610) is connected to the interior of the electrostatic precipitator chamber (4) through a pipeline, and the exhaust end of the air pump (610) is located on the left side of the dust removal sheet (5).

4. An operating method, applied to the high manganese steel welding dust removal device based on dynamic concentration control according to any one of claims 1 to 3, characterized in that: The operation method comprises the following steps: Step 1: During the welding process, smoke and manganese vapor pass through the electrostatic precipitator chamber (4) and the spray chamber (7) in sequence from the air inlet pipe (2). The electrostatic precipitator chamber (4) is used to capture fine particles in the welding smoke. The spray chamber (7) further removes manganese vapor, manganese oxides and residual gas by spraying adsorption liquid. The waste liquid generated by the spraying is discharged from the waste liquid recovery pipe (10), and the treated gas is discharged from the exhaust pipe on the side of the spray chamber (7). The concentration sensor (9) is used to monitor the inlet concentration C of smoke and manganese vapor in the welding process in real time. in and outlet concentration C out , and transmit concentration data to the system background; Step 2: The system background dynamically calculates the concentration difference ΔC=C in -C out and concentration error coefficient E c , dynamically calculate the fan (3) speed and spray liquid flow rate, and the concentration difference formula ΔC: ΔC=C in -C out C in is the inlet concentration of welding fume or manganese vapor, C out is the outlet concentration after treatment; the difference between the inlet and outlet concentrations reflects the actual removal capacity of the device; the larger the difference, the better the dust removal effect; the concentration error coefficient is used to quantify the deviation of the removal effect. The larger the error coefficient, the more the dust removal effect deviates from the target value, and the device needs to be adjusted more: C target Target outlet concentration; C out Actual outlet concentration; Formula for controlling the speed of the induced fan (3): N f : Current speed of the exhaust fan (3); N min : The minimum allowable speed of the exhaust fan to prevent the fan speed from being too low to meet the basic dust removal requirements; N max : The maximum allowable speed of the induced fan is limited to avoid energy waste and equipment overload; N f0 : The basic speed of the induced fan (3), i.e. the normal speed during initial operation; Indicates the ratio of outlet concentration to inlet concentration, reflecting the real-time dust removal effect. The higher the ratio, the worse the dust removal effect, and the higher the speed needs to be. E c : Concentration error coefficient, a correction term for the deviation between the real-time dust removal effect and the target. The greater the error, the higher the speed will be. C max :The maximum inlet concentration generated during high manganese steel welding is designed to be 80mg / m 3 ; K1, K2, K3: Weight coefficients are adjustable. K1: Generally, the value is 0.1-0.3, which is used to adjust the sensitivity of the ratio of outlet to inlet concentration to the speed. K2: Generally, the value is 0.1-0.3, which is used to adjust the response strength when the actual dust removal effect deviates from the target. K3: Generally, the value is 0.2-0.4, which is used to adjust the response strength of the fan when the inlet concentration is close to the design maximum value. Spray flow control formula: Q p : Current spray liquid flow rate; Q p0 : basic spray liquid flow rate; K4: Controls the effect of the ratio of outlet to inlet concentration on flow rate. The recommended value range is 0.1 to 0.

3. K5: The influence of control error coefficient on flow rate, the recommended value range is 0.1~0.3; Step 3: Based on the calculation results of the induced fan (3) speed formula and the spray flow control formula, the system background controls the variable frequency motor and flow control valve in real time to adjust the spray liquid flow and the induced fan (3) speed.

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