A dust control device for asphalt mixture unloading area

Abstract

This invention discloses a dust treatment device for asphalt mixture unloading areas, relating to the field of dust separation technology. To address the self-cleaning problem, it specifically includes a housing. The inner wall of the housing is connected to a plurality of rectangular arrays of bag filter components via a fixing frame. A top cover is bolted to the outer wall of the housing, with an air outlet on one side of the top cover. A dust collection hopper is bolted to the outer wall of the bottom of the housing, supported by legs and with a cover door at its bottom opening. This invention, through targeted design of the bag filter components, utilizes the characteristics of the resultant force direction of the gas on the filter bags during filtration. After a single use, the filter bags are automatically cleaned by the vibration generated by the impact of protrusions against the bag filter components. Furthermore, by incorporating an impact ring, the inertial characteristics enable secondary vibration during each start-up and shutdown, increasing the cleaning effect. No additional power supply is required, facilitating volume optimization and cost control.

Description

Technical Field

[0001] This invention relates to the field of dust separation technology, and in particular to a dust treatment device for asphalt mixture unloading area. Background Technology

[0002] After unloading, the asphalt mixture is lifted and transported in a relatively enclosed elevator. However, this process generates a large amount of dust. If not treated, the dust will affect subsequent processes and pollute the atmosphere. Therefore, during the lifting process, a branch road is opened in the relatively enclosed elevator and then connected to a bag filter for dust removal.

[0003] A search revealed a Chinese patent publication number CN118949564A, which discloses a baghouse dust collector, including a dust collector housing. A partition plate is installed inside the dust collector housing, and several through holes are opened on the partition plate. A support frame is installed at the through holes, and two layers of filter bags are sleeved on the support frame. A cleaning mechanism for cleaning the filter bags is provided between the two layers of filter bags.

[0004] The aforementioned patent has the following shortcomings: it uses a separate drive cleaning mechanism to remove dust from the filter bags, which on the one hand increases the arrangement of the power source, making the entire bag filter dust collector larger in size, and on the other hand, the drive and transmission parts will also be covered with dust, resulting in a short service life. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dust treatment device for asphalt mixture unloading areas.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dust control device for asphalt mixture unloading area, comprising a shell,

[0008] The inner wall of the housing is connected to a plurality of rectangular arrays of bag dust collection components by a fixing frame. The top outer wall of the housing is fixed with a top cover by bolts. An air outlet is provided on one side of the top cover. The bottom outer wall of the housing is fixed with a dust collection hopper by bolts. The dust collection hopper is supported on the ground by a support leg and a cover door is provided at the bottom opening of the dust collection hopper. The side wall of the dust collection hopper is fixed and connected to a suction pipe. A suction pump is provided at the suction pump location.

[0009] The bag filter assembly includes a dust collector bag that is movably fitted to the inner wall of the bag filter assembly and two protrusions fixed to the outer wall of the dust collector bag. The two protrusions are located on both sides of the bag filter assembly. A second spring is fastened to the top of the bottom protrusion, and the other end of the second spring is fastened to the bottom outer wall of the bag filter assembly. A guide rod is fixed to the top outer wall of the top protrusion by bolts. An impact ring is slidably connected to the outer wall of the guide rod, and a first spring is sleeved on the outer wall of the guide rod.

[0010] Preferably, the impact ring has a hollow structure, and the cavity of the impact ring is filled with multiple counterweight beads.

[0011] Furthermore, the dimensions of the multiple counterweight beads are different.

[0012] Based on the aforementioned scheme: the top of the top cover is provided with a recoil assembly, the recoil assembly includes a cylinder body 1 welded and connected to the top of the top cover, a piston 1 slidably connected to the inner wall of the cylinder body 1, and multiple sets of limiting assemblies symmetrically arranged on one side wall of the cylinder body for limiting the piston 1. The top outer wall of the piston 1 is fastened with a return spring 1, and the other end of the return spring 1 is fastened to the top lower surface of the cylinder body 1.

[0013] A preferred embodiment of the aforementioned scheme is that the limiting component includes an arc-headed locking rod that is slidably connected to the inner wall of the cylinder and engages with the piston, and a second return spring that is connected between the cylinder and the arc-headed locking rod.

[0014] As a further aspect of the present invention: a magnetic core is mounted on the side wall of the suction tube via an insulating bracket. A primary coil and a secondary coil are wound around both sides of the magnetic core. A telescopic rod one and a telescopic rod two are fixed to the outer walls of the suction tube on both sides of the magnetic core. An electrode head one is fixed to the telescopic end of the telescopic rod one. The electrode head one contacts and is electrically connected to the outer wall of the primary coil. An electrode head two is fixed to the telescopic end of the telescopic rod two. The electrode head two contacts and is electrically connected to the outer wall of the secondary coil.

[0015] Meanwhile, one end of the primary coil and electrode head one are connected to an AC power source, and one end of the secondary coil and electrode head two are connected to the input terminal of the suction pump.

[0016] As a preferred embodiment of the present invention: the telescopic rod is an electromagnetic telescopic rod, and a generator rotor is fixed to the outer wall of the shaft of the suction pump. The outer wall of the generator rotor is fitted with a generator stator fixed to the outer wall of the suction pipe. The generator stator is electrically connected to the telescopic rod, and when the induced voltage of the generator stator shows an increasing trend, the telescopic rod tends to extend.

[0017] Meanwhile, the inner wall of the suction tube is rotatably connected to an induction sealing door, and the inner wall of the suction tube is fixed with a limiting frame that limits the induction sealing door. The top outer wall of the induction sealing door is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to a piston two. The outer wall of the piston two is slidably connected to a cylinder two die-cut piston two welded to the outer wall of the suction tube and connected to the inside of the cylinder two by a spring three.

[0018] As a preferred embodiment of the present invention: the second telescopic rod is a pneumatic telescopic rod, the second telescopic rod is connected to the second cylinder through a pipeline, and when the air pressure in the second cylinder tends to increase, the second telescopic rod tends to extend.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. This invention, through targeted design of the bag filter assembly, utilizes the characteristics of the resultant force direction of the gas on the filter bag during filtration. After a single use, the filter bag can be automatically cleaned by the vibration generated by the impact of the protrusions with the bag filter assembly. Furthermore, by setting an impact ring, the inertial characteristics can be used to generate secondary vibrations during a single start-up and shutdown, increasing the cleaning effect. Moreover, no additional power arrangement is required, which facilitates size optimization and cost control.

[0021] 2. The present invention, by setting the interior of the impact ring as a cavity structure and setting counterweight beads inside the cavity, can use multiple counterweight beads of different sizes to break the single high-energy vibration of the impact ring into continuous high-frequency low-energy vibration, thereby preventing component vibration damage and increasing the self-cleaning effect of the dust collector bag.

[0022] 3. In this invention, by setting a backflush component, a backflush airflow can be generated, thereby increasing the self-cleaning effect. Furthermore, it utilizes the air pressure during separation to store energy, reducing the backflush power arrangement. In addition, by setting the number of limit components, the backflush is pulsed and the number of pulses matches the number of vibrations for self-cleaning, preventing the waste of backflush energy while further increasing the self-cleaning effect.

[0023] 4. This invention, by setting up components such as a main coil, a magnetic core, and a secondary coil, and cooperating with electrode head one and electrode head two, can, on the one hand, suppress the voltage input of the suction pump when the concentration of dust in the suction air is high or the suction speed is fast and the flow rate is large, and the dust collector bag is under great force; on the other hand, it can also make the input voltage of the suction pump increase with the increase of the rotation speed, thereby increasing the service life of the device.

[0024] 5. This invention, by setting up components such as a generator stator, a generator rotor, and an induction sealing gate, enables the power of the suction pump to be automatically adjusted relative to the start-up time, the concentration of smoke and dust in the suction pipe, and the flow rate of smoke and dust in the suction pipe. Compared with electronic control, this is time-free and reduces operating costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a dust treatment device for an asphalt mixture unloading area proposed in this invention.

[0026] Figure 2 This is a schematic diagram of the bag filter dust collection component of an asphalt mixture unloading area dust treatment device proposed in this invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the impact ring of an asphalt mixture unloading area dust treatment device proposed in this invention.

[0028] Figure 4 This is a schematic diagram of the backflushing component structure of an asphalt mixture unloading area dust treatment device proposed in this invention;

[0029] Figure 5 This invention proposes a dust treatment device for asphalt mixture unloading areas. Figure 4 Enlarged structural diagram of section A;

[0030] Figure 6 This is a schematic diagram of one side of the suction pipe of an asphalt mixture unloading area dust treatment device proposed in this invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the suction pipe of an asphalt mixture unloading area dust treatment device proposed in this invention;

[0032] Figure 8 This is a schematic diagram of the circuit structure of a dust treatment device for an asphalt mixture unloading area proposed in this invention.

[0033] In the diagram: 1. Housing; 2. Fixing frame; 3. Top cover; 4. Backflush assembly; 5. Air outlet; 6. Bag filter assembly; 7. Cover; 8. Dust collection hopper; 9. Support leg; 10. Suction pipe; 11. Suction pump; 12. Impact ring; 13. Guide slide rod; 14. Spring 1; 15. Dust collector bag; 16. Protrusion; 17. Spring 2; 18. Counterweight bead; 19. Limiting assembly; 20. Return spring 1; 21. Activated... 1. Plug 1; 22. Cylinder 1; 23. Arc head locking rod; 24. Return spring 2; 25. Telescopic rod 1; 26. Electrode head 1; 27. Main coil; 28. Magnetic core; 29. ​​Telescopic rod 2; 30. Secondary coil; 31. Electrode head 2; 32. Generator stator; 33. Generator rotor; 34. Cylinder 2; 35. Piston 2; 36. Connecting rod; 37. Induction sealing gate; 38. Limit frame; 39. Spring 3. Detailed Implementation

[0034] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] Example 1:

[0037] A dust control device for asphalt mixture unloading area, such as Figure 1 - Figure 8 As shown, the device includes a housing 1. The inner wall of the housing 1 is connected to a plurality of rectangular arrays of bag dust collection components 6 via a fixing frame 2. The top outer wall of the housing 1 is fixed with a top cover 3 by bolts. An air outlet 5 is provided on one side of the top cover 3. The bottom outer wall of the housing 1 is fixed with a dust collection hopper 8 by bolts. The dust collection hopper 8 is supported on the ground by a support leg 9 and a cover door 7 is provided at the bottom opening of the dust collection hopper 8. The side wall of the dust collection hopper 8 is fixed and connected to a suction pipe 10. A suction pump 11 is provided at the suction pump 11.

[0038] When using this device, the suction pipe 10 can be connected to the elevator to be suctioned. Then, when the suction pump 11 is started, the suction pump 11 will draw the air containing dust in the elevator into the housing 1 through the suction pipe 10. The dust is filtered by the bag filter assembly 6 and discharged to the top cover 3, and then discharged through the air outlet 5. After filtration, the dust on the outer wall of the bag filter assembly 6 will fall into the dust collection hopper 8. The dust can be cleaned by opening the cover door 7.

[0039] The bag filter assembly 6 includes a dust collector bag 15 movably fitted to the inner wall of the bag filter assembly 6 and two protrusions 16 fixed to the outer wall of the dust collector bag 15. The two protrusions 16 are located on both sides of the bag filter assembly 6, and the top of the bottom protrusion 16 is fastened with a second spring 17. The other end of the second spring 17 is fastened to the bottom outer wall of the bag filter assembly 6. The top outer wall of the top protrusion 16 is fixed with a guide slide rod 13 by bolts. The outer wall of the guide slide rod 13 is slidably connected with an impact ring 12, and the outer wall of the guide slide rod 13 is fitted with a first spring 14.

[0040] When the dust collector bag 15 is in the filtration state, because its opening faces upward, the total force of the gas it is subjected to is upward, which causes the dust collector bag 15 to move upward against the elastic force of the spring 17. The impact ring 12 also moves upward. When the suction pump 11 stops abruptly after a single filtration, the air pressure in the inner cavity of the housing 1 disappears instantly, causing the dust collector bag 15 to move downward instantly under the elastic force. The vibration generated by the collision between the protrusion 16 and the bag dust collector assembly 6 cleans the dust collector bag 15. At the same time, due to inertia, when the dust collector bag 15 falls suddenly, the impact ring 12 will fall later than the dust collector bag 15, causing the guide slide rod 13 to be compressed until the protrusion 16 can no longer move after colliding with the bag dust collector assembly 6. Then, the impact ring 12 will fall downward under the elastic force of the guide slide rod 13 until the impact ring 12 and the protrusion 16 collide again, generating another vibration.

[0041] This device, through targeted design of the bag filter assembly 6, utilizes the characteristics of the resultant force direction of the gas on the filter bag 15 during filtration. After a single use, the filter bag 15 can be automatically cleaned by the vibration generated by the impact of the protrusion 16 with the bag filter assembly 6. Furthermore, by setting an impact ring 12, the device utilizes inertial characteristics to generate secondary vibrations during a single start-up and shutdown, thereby increasing the cleaning effect. Moreover, no additional power arrangement is required, which facilitates size optimization and cost control.

[0042] The impact ring 12 has a hollow structure, and the cavity of the impact ring 12 is filled with multiple counterweight beads 18.

[0043] The various counterweight beads 18 are of different sizes.

[0044] This device, by setting the interior of the impact ring 12 as a cavity structure and setting counterweight beads 18 inside the cavity, can use multiple counterweight beads 18 of different sizes to break the single high-energy vibration of the impact ring 12 into continuous high-frequency low-energy vibration, thereby preventing component vibration damage and increasing the self-cleaning effect of the dust collector bag 15.

[0045] To further address the issue of cleaning effectiveness, such as Figure 1 , Figure 4 , Figure 5 As shown, the top of the top cover 3 is provided with a recoil assembly 4. The recoil assembly 4 includes a cylinder 22 welded to and connected to the top of the top cover 3, a piston 21 slidably connected to the inner wall of the cylinder 22, and multiple sets of limiting assemblies 19 symmetrically arranged on the side wall of the cylinder 22 for limiting the piston 21. A return spring 20 is fastened to the top outer wall of the piston 21, and the other end of the return spring 20 is fastened to the top lower surface of the cylinder 22.

[0046] In this embodiment, the longitudinal number of groups of the limiting component 19 is not limited. Since there is a three-level sequential vibration sequence during the self-cleaning process, namely, the protrusion 16 and the bag dust collector 6, the impact ring 12 and the protrusion 16, and the counterweight bead 18 and the impact ring 12 / counterweight bead 18, in this embodiment, preferably, the longitudinal number of groups of the limiting component 19 is two.

[0047] The limiting component 19 includes an arc-head locking rod 23 that is slidably connected to the inner wall of cylinder 22 and engages with piston 21 for limiting, and a return spring 24 that is connected between cylinder 22 and arc-head locking rod 23.

[0048] During filtration, the inner cavity of the top cover 3 also has air pressure, which causes the piston 21 to move upward to its highest position under the gas pressure. When the machine stops, the air pressure in the top cover 3 will also disappear, which will cause the piston 21 to move downward under the elastic force of the return spring 20, so that the pressure in the inner cavity of the top cover 3 is compensated, which will make the air pressure in the inner cavity of the top cover 3 greater than that in the inner cavity of the housing 1, and the airflow will backflush. When the piston 21 moves, it will contact the limiting component 19 from top to bottom in sequence, thus generating multiple backflushes. The two sets of longitudinal limiting components 19 can make the piston 21 move in three stages, thus forming three backflushes.

[0049] This device, by setting the backflush component 4, can generate backflush airflow, thereby increasing the self-cleaning effect. It also uses the air pressure during separation to store energy, reducing the backflush power arrangement. In addition, by setting the number of limit components 19, the backflush is pulsed and the number of pulses matches the number of vibrations for vibration self-cleaning, preventing the waste of backflush energy while further increasing the self-cleaning effect.

[0050] In this embodiment, the suction pipe 10 can be connected to the elevator to be suctioned. Then, when the suction pump 11 is started, it draws the air containing smoke and dust from the elevator into the housing 1 through the suction pipe 10. The smoke and dust are filtered by the bag filter assembly 6 and discharged to the top cover 3, then exited through the outlet 5. After filtration, the smoke and dust on the outer wall of the bag filter assembly 6 falls into the dust collection hopper 8. The dust can be cleaned by opening the cover door 7. When the dust collector bag 15 is in the filtering state, because its opening faces upwards, the total force of the gas it receives during filtration is upwards. This causes the dust collector bag 15 to move upward against the elastic force of the spring 17, and the impact ring 12 to move upward. When the suction pump 11 stops abruptly at the end of a single filtration cycle, the air pressure inside the housing 1 disappears instantaneously, causing the dust collector bag 15 to move downward instantly under the elastic force. The vibration generated by the collision between the protrusion 16 and the bag dust collection assembly 6 cleans the dust collector bag 15. At the same time, due to inertia, when the dust collector bag 15 falls suddenly, the impact ring 12 will lag behind the descent of the dust collector bag 15, causing the guide slide rod 13 to be compressed until the protrusion 16 and the bag dust collection assembly... After impact 6, the impact ring 12 will descend under the elastic force of the guide slide 13 until it impacts the protrusion 16 again, generating another vibration. Furthermore, by designing the interior of the impact ring 12 as a hollow structure and placing counterweight beads 18 within the cavity, the single high-energy vibration of the impact ring 12 can be broken down into continuous high-frequency, low-energy vibrations using multiple counterweight beads 18 of different sizes. This prevents component vibration damage and also increases the self-cleaning effect of the dust collector bag 15. In the filtration state, the inner cavity of the top cover 3 also has… There is air pressure, which causes piston 21 to move upward to its highest position under the pressure of the gas. When the machine stops, the air pressure in the top cover 3 will also disappear, which will cause piston 21 to move downward under the elastic force of return spring 20, which will compensate for the pressure in the inner cavity of the top cover 3. This will make the air pressure in the inner cavity of the top cover 3 greater than that in the inner cavity of the housing 1, and the airflow will backflush. When piston 21 moves, it will contact the limiting component 19 from top to bottom in sequence, thus generating multiple backflushes. The two sets of longitudinal limiting components 19 can make piston 21 move in three stages, thus forming three backflushes.

[0051] Example 2:

[0052] A dust control device for asphalt mixture unloading area, such as Figure 1 - Figure 8As shown, in order to solve the lifespan problem, this embodiment makes the following improvements based on embodiment 1: A magnetic core 28 is installed on the side wall of the suction tube 10 through an insulating bracket. A primary coil 27 and a secondary coil 30 are wound on both sides of the magnetic core 28, respectively. A telescopic rod 1 25 and a telescopic rod 29 are fixed on the outer walls of the suction tube 10 on both sides of the magnetic core 28, respectively. An electrode head 1 26 is fixed to the telescopic end of the telescopic rod 1 25. The electrode head 1 26 is in contact with and electrically connected to the outer wall of the primary coil 27. An electrode head 2 31 is fixed to the telescopic end of the telescopic rod 29. The electrode head 2 31 is in contact with and electrically connected to the outer wall of the secondary coil 30.

[0053] One end of the primary coil 27 and the first electrode 26 are connected to an AC power source, and one end of the secondary coil 30 and the second electrode 31 are connected to the input terminal of the suction pump 11.

[0054] When the AC power supply is started, an induced electromotive force is generated in the secondary coil 30 according to electromagnetic induction, thereby driving the suction pump 11 to start. Simultaneously, in the formula... U1 and U2 are the voltages of the main coil 27 and electrode head 31, respectively, and n1 and n2 are the number of turns connected to the main coil 27 and electrode head 31, respectively. When the concentration of dust in the air drawn by the suction pipe 10 is high, or the suction speed is fast and the flow rate is large, the dust collector bag 15 experiences a large gas force, which may lead to deformation. In this case, the extension rod 29 can be controlled to extend, thereby changing the contact position between the electrode head 31 and the secondary coil 30, reducing the number of turns connected to the secondary coil 30. This reduces the need for a constant AC power input voltage and number of turns, thus reducing the need for a constant suction pump. The power of pump 11 is relatively high. At the beginning of startup, due to the slow speed and heavy load of pump 11, the starting current is large, which may cause it to burn out. At the beginning of startup, the telescopic rod 25 is relatively retracted. At this time, the number of turns of the main coil 27 is relatively large, which makes the starting voltage of pump 11 low. As the speed of pump 11 gradually increases, the telescopic rod 25 gradually extends, which gradually reduces the number of turns of the main coil 27 and the voltage of pump 11 gradually increases until pump 11 reaches the rated speed and the input voltage also reaches the rated voltage.

[0055] This device, by setting up components such as the main coil 27, the magnetic core 28, and the secondary coil 30, and cooperating with electrode head one 26 and electrode head two 31, can, on the one hand, suppress the voltage input of the suction pump 11 when the concentration of dust in the suction air is high or the suction speed is fast and the flow rate is large, and the dust collector bag 15 is under great force. On the other hand, it can also make the input voltage of the suction pump 11 increase with the increase of the rotation speed, thereby increasing the service life of the device.

[0056] To solve the problem of automated control, the telescopic rod 25 is an electromagnetic telescopic rod, and a generator rotor 33 is fixed on the outer wall of the shaft of the suction pump 11. The outer wall of the generator rotor 33 is fitted with a generator stator 32 fixed on the outer wall of the suction pipe 10. The generator stator 32 is electrically connected to the telescopic rod 25, and when the induced voltage of the generator stator 32 shows an increasing trend, the telescopic rod 25 tends to extend.

[0057] The inner wall of the suction tube 10 is rotatably connected to an induction sealing door 37. The inner wall of the suction tube 10 is fixed with a limiting frame 38 that limits the induction sealing door 37. The top outer wall of the induction sealing door 37 is rotatably connected to a connecting rod 36. The other end of the connecting rod 36 is rotatably connected to a piston 35. The outer wall of the piston 35 is slidably connected to a cylinder 34 welded to the outer wall of the suction tube 10. The die-cut piston 35 is connected to the inside of the cylinder 34 by a spring 39. The telescopic rod 29 is a pneumatic telescopic rod. The telescopic rod 29 is connected to the cylinder 34 by a pipeline. When the air pressure in the cylinder 34 tends to increase, the telescopic rod 29 tends to extend.

[0058] In the initial state, the suction pump 11 does not rotate, the generator stator 32 and the generator rotor 33 have no relative movement, and the telescopic rod 25 is not energized. At this time, the telescopic rod 25 is in the extreme contraction state. As the suction pump 11 starts and the speed gradually increases, an induced voltage will be generated in the generator stator 32 and gradually increase, thereby causing the telescopic rod 25 to gradually extend.

[0059] During suction, the gas collides with the inductive sealing gate 37, causing the inductive sealing gate 37 to rotate. Based on the law of conservation of momentum, a single-variable analysis is employed:

[0060] ①: The fluid velocity in the suction tube 10 remains constant. If the smoke concentration increases, the gas density will increase because the gas contains smoke, which will increase the force on the induction sealing door 37 and increase the rotation angle of the induction sealing door 37.

[0061] ②: The concentration of smoke and dust in the suction pipe 10 remains unchanged. If the fluid velocity increases, the amount of gas acting on the induction sealing door 37 per unit time will increase, thereby increasing the force on the induction sealing door 37.

[0062] This device, by setting up components such as a generator stator 32, a generator rotor 33, and an induction sealing gate 37, enables the power of the suction pump 11 to be automatically adjusted relative to the start-up time, the dust concentration in the suction pipe 10, and the dust flow rate in the suction pipe 10. Compared with electronic control, it has no delay and also reduces the cost of use.

[0063] In this embodiment, in the initial state, the suction pump 11 does not rotate, the generator stator 32 and the generator rotor 33 have no relative movement, and the telescopic rod 25 is not energized. At this time, the telescopic rod 25 is in the extreme contraction state. As the suction pump 11 starts and the speed gradually increases, an induced voltage will be generated in the generator stator 32 and gradually increase, thereby causing the telescopic rod 25 to gradually extend.

[0064] During suction, the gas collides with the inductive sealing gate 37, causing the inductive sealing gate 37 to rotate. Based on the law of conservation of momentum, a single-variable analysis is employed:

[0065] ①: The fluid velocity in the suction tube 10 remains constant. If the smoke concentration increases, the gas density will increase because the gas contains smoke, which will increase the force on the induction sealing door 37 and increase the rotation angle of the induction sealing door 37.

[0066] ②: The concentration of smoke and dust in the suction pipe 10 remains constant. If the fluid velocity increases, the amount of gas acting on the inductive sealing door 37 per unit time increases, thus increasing the force exerted on the inductive sealing door 37. When the AC power supply is started, an induced electromotive force can be generated in the secondary coil 30 according to electromagnetic induction, thereby using the induced electromotive force to drive the suction pump 11 to start. At the same time, in the formula... U1 and U2 are the voltages of the main coil 27 and electrode head 31, respectively, and n1 and n2 are the number of turns connected to the main coil 27 and electrode head 31, respectively. When the concentration of dust in the air drawn by the suction pipe 10 is high, or the suction speed is fast and the flow rate is large, the dust collector bag 15 experiences a large gas force, which may lead to deformation. In this case, the extension rod 29 can be controlled to extend, thereby changing the contact position between the electrode head 31 and the secondary coil 30, reducing the number of turns connected to the secondary coil 30. This reduces the need for a constant AC power input voltage and number of turns, thus reducing the need for a constant suction pump. The power of pump 11 is relatively high. At the beginning of startup, due to the slow speed and heavy load of pump 11, the starting current is large, which may cause it to burn out. At the beginning of startup, the telescopic rod 25 is relatively retracted. At this time, the number of turns of the main coil 27 is relatively large, which makes the starting voltage of pump 11 low. As the speed of pump 11 gradually increases, the telescopic rod 25 gradually extends, which gradually reduces the number of turns of the main coil 27 and the voltage of pump 11 gradually increases until pump 11 reaches the rated speed and the input voltage also reaches the rated voltage.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dust treatment device for an asphalt mixture unloading area, comprising a shell (1), characterized in that, The inner wall of the housing (1) is connected to a plurality of rectangular arrays of bag dust collection components (6) by a fixing frame (2). The top outer wall of the housing (1) is fixed with a top cover (3) by bolts. An air outlet (5) is provided on one side of the top cover (3). The bottom outer wall of the housing (1) is fixed with a dust collection hopper (8) by bolts. The dust collection hopper (8) is supported on the ground by a support leg (9) and a cover door (7) is provided at the bottom opening of the dust collection hopper (8). The side wall of the dust collection hopper (8) is fixed and connected to a suction pipe (10). A suction pump (11) is provided at the suction pump (11). The bag dust collector assembly (6) includes a dust collector bag (15) that is movably fitted to the inner wall of the bag dust collector assembly (6) and two protrusions (16) fixed to the outer wall of the dust collector bag (15). The two protrusions (16) are located on both sides of the bag dust collector assembly (6). The top of the bottom protrusion (16) is fastened with a second spring (17). The other end of the second spring (17) is fastened to the bottom outer wall of the bag dust collector assembly (6). The top outer wall of the top protrusion (16) is fixed with a guide slide rod (13) by bolts. The outer wall of the guide slide rod (13) is slidably connected with an impact ring (12). The outer wall of the guide slide rod (13) is sleeved with a first spring (14). The impact ring (12) has a hollow structure, and the cavity of the impact ring (12) is filled with multiple counterweights (18), and the multiple counterweights (18) have different sizes. The top of the top cover (3) is provided with a recoil assembly (4). The recoil assembly (4) includes a cylinder (22) welded to and connected to the top of the top cover (3), a piston (21) slidably connected to the inner wall of the cylinder (22), and multiple sets of limiting assemblies (19) symmetrically arranged on the side wall of the cylinder (22) for limiting the piston (21). The top outer wall of the piston (21) is fastened with a reset spring (20), and the other end of the reset spring (20) is fastened to the top lower surface of the cylinder (22).

2. The dust treatment equipment for asphalt mixture unloading area according to claim 1, characterized in that, The limiting component (19) includes an arc-headed lever (23) that is slidably connected to the inner wall of cylinder one (22) and limited to piston one (21), and a reset spring two (24) connected between cylinder one (22) and arc-headed lever (23).

3. The dust treatment equipment for asphalt mixture unloading area according to claim 1, characterized in that, The suction tube (10) has a magnetic core (28) mounted on its sidewall via an insulating bracket. A primary coil (27) and a secondary coil (30) are wound around the two sides of the magnetic core (28). A telescopic rod one (25) and a telescopic rod two (29) are fixed on the outer walls of the suction tube (10) on both sides of the magnetic core (28). An electrode head one (26) is fixed at the telescopic end of the telescopic rod one (25). The electrode head one (26) is in contact with and electrically connected to the outer wall of the primary coil (27). An electrode head two (31) is fixed at the telescopic end of the telescopic rod two (29). The electrode head two (31) is in contact with and electrically connected to the outer wall of the secondary coil (30).

4. The dust treatment equipment for asphalt mixture unloading area according to claim 3, characterized in that, One end of the primary coil (27) and the first electrode head (26) are connected to an AC power source, and one end of the secondary coil (30) and the second electrode head (31) are connected to the input terminal of the suction pump (11).

5. The dust treatment equipment for asphalt mixture unloading area according to claim 4, characterized in that, The telescopic rod (25) is an electromagnetic telescopic rod, and a generator rotor (33) is fixed on the outer wall of the shaft of the suction pump (11). The outer wall of the generator rotor (33) is fitted with a generator stator (32) fixed on the outer wall of the suction pipe (10). The generator stator (32) is electrically connected to the telescopic rod (25), and when the induced voltage of the generator stator (32) shows an increasing trend, the telescopic rod (25) tends to extend.

6. The dust treatment equipment for asphalt mixture unloading area according to claim 5, characterized in that, The inner wall of the suction tube (10) is rotatably connected to an induction sealing door (37). The inner wall of the suction tube (10) is fixed with a limiting frame (38) that limits the induction sealing door (37). The top outer wall of the induction sealing door (37) is rotatably connected to a connecting rod (36). The other end of the connecting rod (36) is rotatably connected to a piston (35). The outer wall of the piston (35) is slidably connected to a cylinder (34) welded to the outer wall of the suction tube (10). The die-cut piston (35) is connected to the inside of the cylinder (34) through a spring (39).

7. The dust treatment equipment for asphalt mixture unloading area according to claim 6, characterized in that, The telescopic rod 2 (29) is a pneumatic telescopic rod. The telescopic rod 2 (29) is connected to the cylinder 2 (34) through a pipeline. When the air pressure in the cylinder 2 (34) is increasing, the telescopic rod 2 (29) tends to extend.

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