Dust collecting device for asphalt mixing station

Abstract

The utility model relates to the technical field of dust collection, in particular to a dust collection device for an asphalt mixing station, which comprises a treatment box, an air pump is mounted at the front end of the treatment box, a dust suction pipe is fixedly connected to the top end of the treatment box, the bottom end of the dust suction pipe penetrates into the treatment box, a filter plate is fixedly connected to the inner wall of the treatment box, and the filter plate is fixedly connected to the inner wall of the treatment box. A cleaning mechanism is arranged in the treatment box; wherein the cleaning mechanism comprises a cleaning mechanism; when dust generated during operation of the mixer is filtered and collected, negative pressure is formed by the treatment box through the air pump, the dust generated during operation can be adsorbed by the dust suction pipe, a cleaning mechanism is arranged, a motor is started, a first reciprocating lead screw drives a cleaning brush to move in a reciprocating mode, the cleaning brush is used for cleaning filter holes of a filter plate, and the dust removal efficiency is improved. Dust in the filter holes can be discharged from the filter holes, and the filter holes are prevented from being blocked, so that the ventilation effect of the filter plate is ensured, and the effect of filtering the dust in the air is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collection, in particular to a dust collection device for an asphalt mixing station. Background Art

[0002] Asphalt mixing plants are facilities used to produce asphalt mixtures (also known as asphalt concrete). They are necessary equipment for the construction of expressways, grade highways, municipal roads, airports, and ports. During the asphalt production process, asphalt raw materials need to be put into the mixer for mixing and stirring to form an asphalt mixture. During this process, a large amount of dust will be generated. In order to avoid pollution to the surrounding environment, the generated dust needs to be collected.

[0003] The Chinese patent "A gas purification module for asphalt mixing station" authorization announcement number "CN216703705U" fixes the suction hood above the mixer through a positioning support rod, starts the air pump, and the air pump draws the gas from the suction hood and sends it to the filter box. The gas passes through the dustproof net layer to filter the dust in the gas.

[0004] In the above scheme, the dust generated in the air when the mixer is running is filtered through the air pump and the dust-proof layer net. However, when the dust-proof layer net intercepts the dust in the air, when the accumulated dust gradually increases, it will cause the mesh of the dust-proof layer net to be clogged, so that the air entering the filter box cannot pass through the dust-proof layer net well, thereby affecting the filtering effect of the air dust.

[0005] Therefore, a dust collection device for an asphalt mixing plant is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a dust collection device for an asphalt mixing station in order to solve the above-mentioned problem, which improves the dust-proof layer net's interception of dust in the air. When the accumulated dust gradually increases, the mesh holes of the dust-proof layer net will be clogged, making it impossible for the air entering the filter box to pass through the dust-proof layer net well, thereby affecting the filtering effect of the air dust.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: a dust collection device for an asphalt mixing plant, comprising: a treatment box, an air pump is installed at the front end of the treatment box, a dust suction pipe is fixedly connected to the top of the treatment box, the bottom end of the dust suction pipe passes through the interior of the treatment box, a filter plate is fixedly connected to the inner wall of the treatment box, and a cleaning mechanism is arranged inside the treatment box; wherein, the cleaning mechanism comprises a motor fixedly connected to one side of the treatment box, a first reciprocating screw is rotatably connected to the inner wall of the treatment box, the output shaft of the motor passes through the treatment box and is fixedly connected to one end of the first reciprocating screw, a first moving block is arranged on the surface of the first reciprocating screw, a cleaning brush is fixedly connected to the bottom end of the first moving block, and a collecting assembly is arranged at the bottom end of the filter plate.

[0008] Preferably, the collection assembly includes a second reciprocating screw that is rotatably connected to the inner wall of the processing box, a second moving block is provided on the surface of the second reciprocating screw, a dust collecting frame is fixedly connected to the top of the second moving block, the top of the dust collecting frame is in contact with the bottom of the filter plate, the bottom of the dust collecting frame is provided with circular holes distributed in a rectangular array, one end of the second reciprocating screw and the surface of the motor output shaft are fixedly connected with a pulley, and a transmission belt is connected between the two pulleys. Under the action of the pulley and the transmission belt, the dust collecting frame and the cleaning brush can be moved synchronously. At the same time, when the air pump is started, the gas in the dust collecting frame is discharged under the action of the circular hole, which is conducive to making the dust collecting frame have a certain adsorption force. When the cleaning brush is cleaning, the cleaned dust is in the dust collecting frame under the action of its own gravity and the adsorption force of the dust collecting frame, which is conducive to collecting the cleaned dust, avoiding the dust from flowing downward through the filter plate and being discharged during cleaning, and ensuring the filtering effect of dust in the air.

[0009] Preferably, the collection assembly further comprises a ventilation plate fixedly connected to the lower end of the inner wall of the dust collecting frame, and a fixing plate is fixedly connected to both sides of the ventilation plate, and the other end of the fixing plate is fixedly connected to the inner bottom wall of the dust collecting frame. When the dust collecting frame adsorbs the dust cleaned by the cleaning brush, the ventilation plate and the fixing plate are used to facilitate the dust entering the dust collecting frame to slide to the inner bottom wall of the dust collecting frame, thereby ensuring that the dust collecting frame adsorbs and collects the dust while preventing the dust from accumulating on the circular hole and causing the circular hole to be blocked, thereby ensuring the exhaust effect of the circular hole, thereby ensuring the dust collecting frame's adsorption effect on the dust.

[0010] Preferably, the vertical cross-sections of the ventilation plate and the two fixed plates form an isosceles triangle, so as to avoid dust accumulation on the ventilation plate and ensure normal ventilation operation of the ventilation plate.

[0011] Preferably, mounting plates are fixedly connected to both sides of the inner wall of the dust collecting frame, and the mounting plates are arranged at an angle. When dust gathers on the inner bottom wall of the dust collecting frame, the mounting plates are used to block the space above the dust and prevent dust from overflowing.

[0012] Preferably, a protective ring is fixedly connected to the inner wall of the processing box, and the first reciprocating screw is arranged inside the protective ring, which is conducive to protecting the first reciprocating screw, preventing dust from adhering to the first reciprocating screw, and ensuring the normal use of the first reciprocating screw.

[0013] Preferably, the other end of the dust suction pipe is configured as a corrugated pipe, which is beneficial to ensure the adsorption effect of dust during feeding and mixing.

[0014] Preferably, the two mounting plates form an inverted figure eight shape.

[0015] The beneficial effects of the utility model are:

[0016] 1. When filtering and collecting the dust generated during the operation of the mixer, an air pump is used to form a negative pressure in the processing box, so that the dust suction pipe can absorb the dust generated during the operation. The cleaning mechanism is set, and the motor is started to make the first reciprocating screw drive the cleaning brush to move back and forth. The cleaning brush is used to clean the filter holes of the filter plate, which is conducive to discharging the dust in the filter holes from the filter holes and avoiding the clogging of the filter holes, thereby ensuring the ventilation effect of the filter plate and improving the filtering effect of the dust in the air;

[0017] 2. When the cleaning brush is cleaning, the pulley and the transmission belt help the dust collecting frame and the cleaning brush to move synchronously. At the same time, when the air pump is started, the gas in the dust collecting frame is discharged under the action of the circular hole, which is conducive to making the dust collecting frame have a certain adsorption force. When the cleaning brush is cleaning, the cleaned dust is in the dust collecting frame under the action of its own gravity and the adsorption force of the dust collecting frame, which is conducive to collecting the cleaned dust, avoiding the dust from flowing downward through the filter plate and being discharged during cleaning, thereby ensuring the filtering effect of dust in the air;

[0018] 3. When the dust collecting frame absorbs the dust cleaned by the cleaning brush, the ventilation plate and the fixed plate help the dust entering the dust collecting frame to slide to the inner bottom wall of the dust collecting frame, ensuring that the dust collecting frame absorbs and collects the dust while avoiding dust accumulation on the circular holes to cause blockage of the circular holes, thereby ensuring the exhaust effect of the circular holes and thus ensuring the dust absorption effect of the dust collecting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the processing box of the utility model;

[0021] Figure 3 This is a schematic diagram of the cleaning mechanism structure of the utility model

[0022] Figure 4It is an exploded view of the dust collecting frame and the fixing plate of the utility model;

[0023] Figure 5 for Figure 4 A is an enlarged view of the middle image.

[0024] In the figure: 1. processing box; 2. air pump; 3. dust suction pipe; 4. filter plate; 5. cleaning mechanism; 501. motor; 502. first reciprocating screw rod; 503. first moving block; 504. cleaning brush; 505. collecting assembly; 5051. second reciprocating screw rod; 5052. second moving block; 5053. dust collecting frame; 5054. round hole; 5055. pulley; 5056. transmission belt; 5057. ventilation plate; 5058. fixing plate; 5059. mounting plate; 506. protective ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] When implementing: Figure 1-5 As shown, a dust collection device for an asphalt mixing plant comprises: a treatment box 1, an air pump 2 is installed at the front end of the treatment box 1, a dust suction pipe 3 is fixedly connected to the top of the treatment box 1, the bottom end of the dust suction pipe 3 passes through the interior of the treatment box 1, a filter plate 4 is fixedly connected to the inner wall of the treatment box 1, and a cleaning mechanism 5 is arranged inside the treatment box 1; wherein, the cleaning mechanism 5 comprises a motor 501 fixedly connected to one side of the treatment box 1, a first reciprocating screw 502 is rotatably connected to the inner wall of the treatment box 1, the output shaft of the motor 501 passes through the treatment box 1 and is fixedly connected to one end of the first reciprocating screw 502, a first moving block 503 is arranged on the surface of the first reciprocating screw 502, a cleaning brush 504 is fixedly connected to the bottom end of the first moving block 503, and a collecting component 505 is arranged at the bottom end of the filter plate 4.

[0027] The other end of the dust suction pipe 3 is fixedly connected with a dust suction hood. When the device is in use, it needs to be installed with the mixer. A fixing frame is installed on the surface of the mixer feed hopper. The other end of the dust suction pipe 3 passes through the fixing frame so that the dust suction hood is located above the feed hopper.

[0028] When feeding materials into the mixer from the feed hopper, keep the dust hood away from the feed hopper to ensure normal feeding, and start the air pump 2. The air inlet pipe of the air pump 2 is connected to the lower end of the treatment box 1. The air pump 2 is started to discharge the air in the treatment box 1. At this time, negative pressure is formed in the treatment box 1, and the dust suction pipe 3 will suck the dust generated during feeding into the treatment box 1. The inner wall of the treatment box 1 is fixedly connected with an activated carbon filter layer and a photocatalyst filter layer that are the same as the original scheme, and the inner bottom wall of the treatment box 1 is fixedly connected with an ultraviolet lamp that is the same as the original scheme. When the dust suction pipe 3 sucks the dust into the treatment box 1, the filter plate 4 filters the dust, and the filtered air passes through the activated carbon filter layer and the photocatalyst filter layer in turn, and is discharged through the air pump 2.

[0029] After the feeding is completed, the dust collection hood is placed close to the feed hopper, and the mixer performs a mixing operation. The dust collection pipe 3 will suck the dust generated during the mixing into the processing box 1.

[0030] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the collecting assembly 505 includes a second reciprocating screw rod 5051 rotatably connected to the inner wall of the processing box 1, a second movable block 5052 is arranged on the surface of the second reciprocating screw rod 5051, a dust collecting frame 5053 is fixedly connected to the top end of the second movable block 5052, the top end of the dust collecting frame 5053 is fitted with the bottom end of the filter plate 4, and the bottom end of the dust collecting frame 5053 is provided with circular holes 5054 distributed in a rectangular array, one end of the second reciprocating screw rod 5051 and the surface of the output shaft of the motor 501 are fixedly connected with a pulley 5055, and a transmission belt 5056 is connected between the two pulleys 5055.

[0031] The center point of the cleaning brush 504 is on the same vertical plane as the center point of the dust collecting frame 5053. When the dust collecting pipe 3 sucks the dust into the processing box 1, the motor 501 is started to drive the first reciprocating screw 502 to rotate. At the same time, it will drive one of the pulleys 5055 to rotate synchronously, and under the action of the other pulley 5055 and the transmission belt 5056, the second reciprocating screw 5051 will rotate synchronously. At this time, the first moving block 503 drives the cleaning brush 504 and the second moving block 5052 to drive the dust collecting frame 50 53 moves back and forth synchronously, and the cleaning brush 504 cleans the filter holes of the filter plate 4 during the reciprocating movement. At the same time, when the air pump 2 exhausts outwards, the air inside the dust collecting frame 5053 will be discharged under the action of the circular hole 5054, so that the dust collecting frame 5053 has a certain adsorption force. When the cleaning brush 504 cleans the filter holes, the dust enters the dust collecting frame 5053 under the action of its own gravity and the suction of the dust collecting frame 5053, avoiding the clogging of the filter holes of the filter plate 4 and completing the collection of dust at the same time.

[0032] The reciprocating screw is in the form of two thread grooves with the same pitch and opposite rotation directions, and the two ends are connected by a transition curve. Through the rotation of the reciprocating screw, the side of the spiral groove pushes the slider placed in the spiral groove to make axial reciprocating motion. Therefore, when the first reciprocating screw 502 and the second reciprocating screw 5051 rotate, the first moving block 503 and the second moving block 5052 will be driven to move.

[0033] The lower end of the inner wall of the dust collecting frame 5053 is fixedly connected with a ventilation plate 5057, and both sides of the ventilation plate 5057 are fixedly connected with a fixing plate 5058, and the other end of the fixing plate 5058 is fixedly connected to the inner bottom wall of the dust collecting frame 5053. The vertical section of the ventilation plate 5057 and the two fixing plates 5058 forms an isosceles triangle.

[0034] The diameter of the through hole of the ventilation plate 5057 is smaller than the diameter of the mesh of the filter plate 4, and the fixed plate 5058 is arranged at an angle. When the circular hole 5054 discharges the air in the dust collecting frame 5053, the air above the dust collecting frame 5053 will pass through the ventilation plate 5057 and the circular hole 5054 in turn and be discharged. At this time, the dust entering the dust collecting frame 5053 will fall onto the ventilation plate 5057 and the two fixed plates 5058, and slide to the inner bottom wall of the dust collecting frame 5053 under the action of the inclined surface of the fixed plate 5058.

[0035] like Figure 4 As shown, both sides of the inner wall of the dust collecting frame 5053 are fixedly connected with mounting plates 5059, and the mounting plates 5059 are arranged in an inclined manner. The two mounting plates 5059 form an inverted "eight" shape. When dust enters the dust collecting frame 5053, part of the dust will first contact the mounting plates 5059 and slide down through the inclined surface of the mounting plates 5059. When the dust is gathered on the inner bottom wall of the dust collecting frame 5053 under the action of the fixing plate 5058, the mounting plates 5059 will block the space above the dust.

[0036] like Figure 3 As shown, the inner wall of the processing box 1 is fixedly connected with a protective ring 506, and the first reciprocating screw rod 502 is arranged inside the protective ring 506. The lower end of the surface of the protective ring 506 is provided with a moving groove matching the first moving block 503, and the surface of the first moving block 503 is slidably connected to the inner wall of the protective ring 506.

[0037] like Figure 2 As shown, the other end of the dust suction pipe 3 is set as a bellows. After the dust suction pipe 3 is installed, when feeding, the protective cover at the other end of the dust suction pipe 3 is pushed to move upward and away from the feed hopper. At this time, the bellows at the other end of the dust suction pipe 3 is contracted. When the mixing agent is mixing, the protective cover at the other end of the dust suction pipe 3 is pulled downward to move closer to the feed hopper. At this time, the bellows at the other end of the dust suction pipe 3 is unfolded.

[0038] When the utility model is in use, when filtering and collecting the dust generated by the operation of the mixer, the air pump 2 is started to form a negative pressure in the processing box 1. At this time, when the dust suction pipe 3 sucks the dust into the processing box 1, the filter plate 4 filters the dust in the air, and the filtered air is discharged through the air pump 2. At the same time, the motor 501 is started, and the first reciprocating screw rod 502 and the second reciprocating screw rod 5051 are driven to rotate synchronously under the action of the pulley 5055 and the transmission belt 5056, so that the first moving block 503 drives the cleaning brush 504 and the second moving block 5052 drives the dust collecting frame 5053. The cleaning brush 504 moves back and forth synchronously, and cleans the filter holes of the filter plate 4 during the reciprocating movement. At the same time, when the air pump 2 exhausts air outwards, the air inside the dust collecting frame 5053 is discharged under the action of the circular hole 5054 and the ventilation plate 5057, so that the dust collecting frame 5053 has a certain adsorption force. When the cleaning brush 504 cleans the filter holes, the dust enters the dust collecting frame 5053 under the action of its own gravity and the suction force of the dust collecting frame 5053, and slides to the inner bottom wall of the dust collecting frame 5053 under the action of the inclined surface of the fixing plate 5058, thereby completing the collection of the dust.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dust collection device for an asphalt mixing station, characterized in that: include: A treatment box (1), wherein an air pump (2) is installed at the front end of the treatment box (1), a dust suction pipe (3) is fixedly connected to the top end of the treatment box (1), the bottom end of the dust suction pipe (3) penetrates into the interior of the treatment box (1), a filter plate (4) is fixedly connected to the inner wall of the treatment box (1), and a cleaning mechanism (5) is arranged inside the treatment box (1); The cleaning mechanism (5) comprises a motor (501) fixedly connected to one side of the processing box (1); the inner wall of the processing box (1) is rotatably connected to a first reciprocating screw (502); the output shaft of the motor (501) passes through the processing box (1) and is fixedly connected to one end of the first reciprocating screw (502); a first moving block (503) is provided on the surface of the first reciprocating screw (502); a cleaning brush (504) is fixedly connected to the bottom end of the first moving block (503); and a collecting assembly (505) is provided at the bottom end of the filter plate (4).

2. The dust collection device for an asphalt mixing plant according to claim 1, characterized in that: The collecting assembly (505) comprises a second reciprocating screw (5051) rotatably connected to the inner wall of the processing box (1); a second moving block (5052) is arranged on the surface of the second reciprocating screw (5051); a dust collecting frame (5053) is fixedly connected to the top of the second moving block (5052); the top of the dust collecting frame (5053) is in contact with the bottom of the filter plate (4); the bottom of the dust collecting frame (5053) is provided with circular holes (5054) distributed in a rectangular array; one end of the second reciprocating screw (5051) and the surface of the output shaft of the motor (501) are fixedly connected with a pulley (5055); a transmission belt (5056) is connected between the two pulleys (5055).

3. The dust collection device for an asphalt mixing plant according to claim 2, characterized in that: The collecting assembly (505) further comprises a ventilation plate (5057) fixedly connected to the lower end of the inner wall of the dust collecting frame (5053), and both sides of the ventilation plate (5057) are fixedly connected to fixing plates (5058), and the other end of the fixing plate (5058) is fixedly connected to the inner bottom wall of the dust collecting frame (5053).

4. The dust collection device for an asphalt mixing plant according to claim 3, characterized in that: The vertical cross-sections of the ventilation plate (5057) and the two fixing plates (5058) form an isosceles triangle.

5. The dust collection device for an asphalt mixing plant according to claim 3, characterized in that: Both sides of the inner wall of the dust collecting frame (5053) are fixedly connected with mounting plates (5059), and the mounting plates (5059) are arranged in an inclined manner.

6. The dust collection device for an asphalt mixing plant according to claim 1, characterized in that: A protective ring (506) is fixedly connected to the inner wall of the processing box (1), and the first reciprocating screw rod (502) is arranged inside the protective ring (506).

7. The dust collection device for an asphalt mixing plant according to claim 1, characterized in that: The other end of the dust suction pipe (3) is configured as a corrugated pipe.

8. The dust collection device for an asphalt mixing plant according to claim 5, characterized in that: The two mounting plates (5059) form an inverted "eight" shape.

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