Asphalt pavement construction joint cleaning device

Abstract

The utility model belongs to the technical field of road surface cleaning devices, and particularly relates to an asphalt road surface construction joint cleaning device which comprises a device body, a cleaning assembly and an asphalt smoke processing assembly, the cleaning assembly and the asphalt smoke processing assembly are arranged on the device body side by side, and the cleaning assembly and the asphalt smoke processing assembly both extend to the lower portion of the device body. The cleaning assembly and the asphalt smoke treatment assembly are arranged, the asphalt pavement construction joints are cleaned through the cleaning assembly, asphalt smoke generated in the cleaning process is absorbed and filtered through the asphalt smoke treatment assembly, and organic waste gas and inorganic waste gas in the asphalt smoke are discharged after being purified and filtered through the asphalt smoke treatment assembly. According to the cleaning device, the asphalt smoke is filtered while the cleaning device cleans the joint of the asphalt pavement, the content of harmful substances in the treated asphalt smoke is greatly reduced, and the working environment of workers is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of road cleaning devices, and in particular relates to a cleaning device for asphalt road construction joints. Background Art

[0002] Joint construction is a critical step in asphalt pavement construction. The quality of these joints directly impacts the pavement's service life, driving comfort, and safety. After the completion of asphalt pavement joint construction, subsequent maintenance is required, including pothole repair, crack filling, and road cleaning.

[0003] For the structure of existing asphalt pavement joint treatment devices, please refer to the asphalt pavement joint treatment machine disclosed in patent CN 219862302 U. The asphalt pavement joint treatment machine includes a vehicle body, a filling mechanism mounted on a vehicle body bracket, and a roller mechanism mounted on the vehicle body frame. The machine also includes a cleaning component and a discharge component mounted on the vehicle body. The cleaning component is used to clean residual debris and other debris. After cleaning, asphalt is poured into the cracks using the filling mechanism. The asphalt is then flattened by the rollers of the roller mechanism. When discharge is required, the discharge component is opened to discharge the material.

[0004] Asphalt offers excellent waterproofing, durability, and adhesion. It is a complex mixture composed primarily of carbon, hydrogen, oxygen, and small amounts of sulfur and nitrogen. Due to the high temperatures during asphalt paving, asphalt fumes are continuously released. Components of asphalt fumes include, but are not limited to, nitrogen oxides, sulfur oxides, carbon monoxide, particulate matter, and volatile organic compounds. Asphalt fumes can cause poisoning through skin contact, inhalation, digestive ingestion, and eye contact. Long-term exposure can cause serious harm to the body and may even lead to cancer.

[0005] The existing asphalt pavement joint processing device can conveniently clean, fill and flatten the asphalt pavement joints, but does not involve the treatment of asphalt fumes. Therefore, a device is needed that can absorb and process asphalt fumes when cleaning the joints to reduce damage to the health of workers. Utility Model Content

[0006] The purpose of the utility model is to provide an asphalt pavement construction joint cleaning device to solve the problem proposed in the above background technology of absorbing and treating asphalt fumes during asphalt joint treatment to avoid long-term exposure of workers to asphalt volatile gases, which may cause health hazards.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] An asphalt pavement construction joint cleaning device includes a device body, a cleaning component and an asphalt fume treatment component. The cleaning component and the asphalt fume treatment component are arranged side by side on the device body and both extend to the bottom of the device body.

[0009] Furthermore, the asphalt fume treatment assembly includes an induced draft fan, a dust suction pipe and an asphalt fume purification box. The induced draft fan is arranged at the bottom of the device body, and the asphalt fume purification box is arranged at the top of the device body. The induced draft fan and the asphalt fume purification box are connected through the dust suction pipe.

[0010] Furthermore, the asphalt fume purification box is provided with an air inlet and an air outlet, the air inlet is connected to the dust suction pipe, a circulation channel is formed between the air outlet and the air inlet, an activated carbon filter is provided in the asphalt fume purification box, the activated carbon filter is located on the longitudinal section of the circulation channel, and the activated carbon filter is provided close to the air inlet.

[0011] Furthermore, a low-temperature plasma reactor is provided in the asphalt fume purification box, and the low-temperature plasma reactor is arranged in parallel with the activated carbon filter.

[0012] Furthermore, an acid gas drying tube is provided in the asphalt fume purification box, an acid gas adsorbent is provided in the acid gas drying tube, an air inlet is provided at the bottom of the acid gas drying tube, an air outlet is provided at the top of the acid gas drying tube, and the air inlet of the acid gas drying tube is connected to the low-temperature plasma reactor.

[0013] Furthermore, an alkaline gas drying tube is provided in the asphalt fume purification box, an alkaline gas adsorbent is provided in the alkaline gas drying tube, an air inlet is provided at the bottom of the alkaline gas drying tube, and an air outlet is provided at the top of the alkaline gas drying tube. The air inlet of the alkaline gas drying tube is connected to the air outlet of the acidic gas drying tube, and the air outlet of the alkaline gas drying tube is connected to the air outlet of the asphalt fume purification box.

[0014] Furthermore, the cleaning assembly includes a fixed seat, a cleaning roller and a cleaning brush. The fixed seat is fixed to the bottom of the device body, the cleaning roller is rotatably connected to the fixed seat, a plurality of cleaning brushes are provided, and the plurality of cleaning brushes are evenly arranged along the circumference of the cleaning roller. The cleaning brush is detachably connected to the cleaning roller.

[0015] Furthermore, the cleaning roller is evenly provided with a plurality of slots along the circumference, an inserting block is provided at one end of the cleaning brush, and the slots are engaged with the inserting block.

[0016] Furthermore, the cleaning assembly further includes a baffle, the baffle cover is arranged above the cleaning roller and the cleaning brush, and a wear-resistant layer is provided on the lower surface of the baffle.

[0017] Furthermore, the baffle is connected to the fixing seat via a hinge shaft, a support spring is provided between the baffle and the fixing seat, and the baffle, the fixing seat and the support spring form a triangular structure.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model is equipped with a cleaning assembly and an asphalt fume treatment assembly. The cleaning assembly cleans the asphalt pavement construction joints. The asphalt fume treatment assembly absorbs and filters the asphalt fume generated during the cleaning process. The organic and inorganic waste gases in the asphalt fume are purified and filtered by the asphalt fume treatment assembly before being discharged. This allows the cleaning device to simultaneously clean the asphalt pavement joints and filter the asphalt fume. The content of harmful substances in the treated asphalt fume is greatly reduced, preventing workers from long-term exposure to asphalt volatile gases, which could pose health risks, and ensuring a safe working environment for workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0021] Figure 2 This is a schematic structural diagram of the cleaning roller of the present utility model;

[0022] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0023] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0024] Among them, 1-device body, 11-frame, 12-driving wheel, 13-active wheel, 14-telescopic rod, 15-handrail;

[0025] 2-cleaning assembly, 21-fixing seat, 22-cleaning roller, 23, cleaning brush, 24-baffle, 25, support spring, 26, slot, 27, insert, 28, fastener;

[0026] 3- Asphalt fume treatment assembly, 31- induced draft fan, 32- dust suction pipe, 33- Asphalt fume purification box, 34- activated carbon filter, 35- low-temperature plasma reactor, 36- acidic gas drying tube, 37- alkaline gas drying tube. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, but the present invention is not limited to the implementation methods described below. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0028] Example

[0029] Organic compounds like benzene, toluene, and xylene, produced by incomplete combustion of asphalt during paving, are the primary sources of toxic and hazardous substances in asphalt fume. Furthermore, when burning asphalt, nitrogen oxides in the air react with oxygen in the fuel to produce nitrogen oxides, and sulfur oxides produce sulfur dioxide, a harmful gas.

[0030] In order to prevent the asphalt smoke produced by incomplete asphalt combustion from damaging the health of workers, the present invention makes the following improvements:

[0031] See also Figure 1 This embodiment provides an asphalt pavement construction joint cleaning device, including a device body 1, a cleaning component 2 and an asphalt fume treatment component 3. The cleaning component 2 and the asphalt fume treatment component 3 are arranged side by side on the device body 1, and the cleaning component 2 and the asphalt fume treatment component 3 both extend to the bottom of the device body 1.

[0032] Specifically: the device body 1 includes a frame 11, and a driving wheel 13 and one or more driven wheels are arranged at the bottom of the frame 11; a driving motor is arranged on the top of the frame 11. In this embodiment, the driving motor is preferably a servo motor, and a driving wheel 12 is arranged on the output shaft of the servo motor. In this embodiment, the driving wheel 12 and the driving wheel 13 are transmitted through a belt mechanism. The driving wheel 12 is driven by the servo motor to rotate, thereby driving the driving wheel 13 and the driven wheel to rotate in turn. The driving wheel 13 and the driven wheel are used as walking wheels to realize the walking and movement of the device body 1.

[0033] A telescopic rod 14 is mounted at one end of the frame 11. The bottom of the rod 14 is pivotally connected to the frame 11 via a damping shaft. A handrail 15 is mounted at the top of the rod 14, also connected to the top of the rod 14 via a damping shaft. The rod 14 and handrail 15 facilitate movement of the push mechanism along joints in the asphalt pavement. The rod 14's pivoting connection to the frame 11 via the damping shaft allows for variable tilt, allowing the height of the handrail 15 to be adjusted to meet varying user needs. The damping shaft further enhances the flexibility of the handrail 15.

[0034] See also Figure 2The cleaning assembly 2 includes a fixed seat 21, a cleaning roller 22 and a cleaning brush 23. The fixed seat 21 is arranged at the bottom of the frame 11. The two ends of the cleaning roller 22 are rotatably connected to the fixed seat 21 through a rotating shaft. A plurality of cleaning brushes 23 are provided, and the plurality of cleaning brushes 23 are evenly arranged along the circumference of the cleaning roller 22, which is convenient for cleaning the construction joints of the asphalt pavement.

[0035] In order to realize the portability and replacement of the cleaning brush 23 and enhance the flexibility of the device, the cleaning roller 22 and the cleaning brush 23 are detachably connected. Figure 4 The cleaning roller 22 is provided with multiple slots 26 evenly spaced along its circumference. An insert 27 is provided at one end of the cleaning brush 23, and the slots 26 and insert 27 engage with each other. Furthermore, to ensure a secure fit between the slots 26 and insert 27, the slots 26 and insert 27 are reinforced by a pin 28 serving as a fastener. The pin can also be replaced with another fastener, such as a bolt, that can also provide a secure connection.

[0036] In order to prevent dust and sharp debris such as stones from being thrown up during cleaning, which may cause hidden dangers to the safety of the workers, a baffle 24 is set on the fixing seat 21 in this embodiment. Figure 3 As shown, baffle 24 is positioned above cleaning roller 22 and cleaning brush 23. Furthermore, a wear-resistant Teflon coating is applied to the lower surface of baffle 24 to enhance its durability, extending the maintenance time and service life of the device. In this embodiment, one end of baffle 24 is hinged to mounting base 21 via a hinge axis. A support spring 25 is also provided, preferably a tension spring. Baffle 24, mounting base 21, and support spring 25 form a triangular structure. The support spring 25 elastically supports baffle 24, enhancing the fit between baffle 24 and mounting base 21.

[0037] The asphalt smoke treatment component 3 includes an induced draft fan 31, a dust suction pipe 32 and an asphalt smoke purification box 33. The induced draft fan 31 is arranged at the bottom of the device body 1, and the asphalt smoke purification box 33 is arranged at the top of the device body 1. The induced draft fan 31 and the asphalt smoke purification box 33 are connected through the dust suction pipe 32.

[0038] Asphalt fume purification box 33 is equipped with an air inlet and an air outlet. The air inlet is connected to the dust collection pipe 32, and a flow channel is formed between the air outlet and the air inlet. An activated carbon filter 34 is installed in the asphalt fume purification box 33. The activated carbon filter 34 is located in the longitudinal section of the flow channel and is located near the air inlet. The activated carbon filter 34 effectively absorbs sulfur dioxide, dust, and large organic compounds in the asphalt fume, especially benzenes such as toluene, xylene, and benzene, as well as phenols and aldehydes.

[0039] A low-temperature plasma reactor 35 is also provided in the asphalt fume purification box 33. The low-temperature plasma reactor 35 is arranged in parallel with the activated carbon filter 34. Compared with the activated carbon filter 34, the low-temperature plasma reactor 35 is arranged at the rear of the circulation channel (the activated carbon filter 34 is arranged close to the air inlet of the asphalt fume purification box 33). The asphalt fume passes through the plasma reaction chamber of the low-temperature plasma reactor 35, so that the harmful substances in the exhaust gas are oxidized and decomposed. The low-temperature plasma reactor 35 can process high-concentration asphalt fume, and the processing speed is efficient. In this embodiment, the low-temperature plasma is preferably the PCD reactor commercially available from Suzhou Alos Environmental Generator Co., Ltd.

[0040] For further optimization, an acid gas drying tube 36 is provided in the asphalt fume purification box 33, an air inlet is provided at the bottom of the acid gas drying tube 36, and an air outlet is provided at the top of the acid gas drying tube 36. The air inlet at the bottom of the acid gas drying tube 36 is connected to the low-temperature plasma reactor 35. The gas treated by the low-temperature plasma reactor 35 enters the acid gas drying tube 36 from the bottom and is discharged from the air outlet at the top of the acid gas drying tube 36. An acid gas adsorbent is provided in the acid gas drying tube 36. The acid gas adsorbent is preferably activated alumina, activated carbon, silica gel or zeolite molecular sieve, etc. The acid gas adsorbent can effectively absorb acid gases in the asphalt fume, such as sulfur dioxide, carbon dioxide, hydrogen sulfide, etc.

[0041] For further optimization, an alkaline gas drying tube 37 is also provided in the asphalt fume purification box 33, an air inlet is provided at the bottom of the alkaline gas drying tube 37, and an air outlet is provided at the top of the alkaline gas drying tube 37. The air inlet at the bottom of the alkaline gas drying tube 37 is connected to the air outlet at the top of the acidic gas drying tube 36, and the top air outlet of the alkaline gas drying tube 37 is connected to the air outlet of the asphalt fume purification box 33. An alkaline gas adsorbent is provided in the alkaline gas drying tube 37. In this embodiment, the alkaline gas adsorbent is preferably calcium chloride particles, activated carbon or zeolite molecular sieve. The alkaline gas adsorbent can absorb ammonia, the main component of alkaline gas in asphalt fume.

[0042] This embodiment provides a device for cleaning joints in asphalt pavement construction. Its operating principle is as follows: a cleaning assembly 2 cleans the joints of the asphalt pavement, while an asphalt fume treatment assembly 3 absorbs and purifies asphalt fumes escaping from the pavement. Driven by an induced draft fan 31, the asphalt fume enters an asphalt fume purification box 33, where it passes through an activated carbon filter 34, a low-temperature plasma reactor 35, an acidic gas drying tube 36, and an alkaline gas drying tube 37. Solid particles and organic macromolecules in the asphalt fume are adsorbed by the activated carbon filter 34, while organic gases are decomposed within the low-temperature plasma reactor 35. Inorganic gases such as sulfur dioxide and carbon monoxide are subsequently absorbed by the acidic gas drying tube 36, while alkaline gases such as ammonia are absorbed by the alkaline gas drying tube 37. The purified gases are then discharged through the outlet of the asphalt fume purification box 33. Treatment by the asphalt fume treatment assembly 3 significantly reduces the content of harmful substances in the asphalt fume, preventing workers from long-term exposure to asphalt volatile gases, which could pose health risks, and ensuring a safe working environment for workers.

Claims

1. A device for cleaning joints in asphalt pavement construction, characterized in that: The invention comprises a device body (1), a cleaning component (2) and an asphalt fume treatment component (3), wherein the cleaning component (2) and the asphalt fume treatment component (3) are arranged in parallel on the device body (1), and the cleaning component (2) and the asphalt fume treatment component (3) both extend to the bottom of the device body (1).

2. The asphalt pavement construction joint cleaning device according to claim 1 is characterized in that: The asphalt fume treatment component (3) comprises an induced draft fan (31), a dust suction pipe (32) and an asphalt fume purification box (33); the induced draft fan (31) is arranged at the bottom of the device body (1); the asphalt fume purification box (33) is arranged at the top of the device body (1); the induced draft fan (31) and the asphalt fume purification box (33) are connected via the dust suction pipe (32).

3. The asphalt pavement construction joint cleaning device according to claim 2 is characterized in that: The asphalt fume purification box (33) is provided with an air inlet and an air outlet, the air inlet is connected to the dust suction pipe (32), a circulation channel is formed between the air outlet and the air inlet, an activated carbon filter (34) is provided in the asphalt fume purification box (33), the activated carbon filter (34) is located on the longitudinal section of the circulation channel, and the activated carbon filter (34) is provided close to the air inlet.

4. The asphalt pavement construction joint cleaning device according to claim 3 is characterized in that: A low-temperature plasma reactor (35) is also provided in the asphalt fume purification box (33), and the low-temperature plasma reactor (35) is arranged in parallel with the activated carbon filter (34).

5. The asphalt pavement construction joint cleaning device according to claim 4 is characterized in that: The asphalt fume purification box (33) is further provided with an acidic gas drying tube (36), an acidic gas adsorbent is provided in the acidic gas drying tube (36), an air inlet is provided at the bottom of the acidic gas drying tube (36), an air outlet is provided at the top of the acidic gas drying tube (36), and the air inlet of the acidic gas drying tube (36) is connected to the low-temperature plasma reactor (35).

6. The asphalt pavement construction joint cleaning device according to claim 5 is characterized in that: An alkaline gas drying tube (37) is also provided in the asphalt fume purification box (33), an alkaline gas adsorbent is provided in the alkaline gas drying tube (37), an air inlet is provided at the bottom of the alkaline gas drying tube (37), an air outlet is provided at the top of the alkaline gas drying tube (37), the air inlet of the alkaline gas drying tube (37) is connected to the air outlet of the acid gas drying tube (36), and the air outlet of the alkaline gas drying tube (37) is connected to the air outlet of the asphalt fume purification box (33).

7. The asphalt pavement construction joint cleaning device according to any one of claims 1 to 6, characterized in that: The cleaning assembly (2) comprises a fixed seat (21), a cleaning roller (22) and a cleaning brush (23); the fixed seat (21) is fixed to the bottom of the device body (1); the cleaning roller (22) is rotatably connected to the fixed seat (21); a plurality of cleaning brushes (23) are provided, and the plurality of cleaning brushes (23) are evenly arranged along the circumference of the cleaning roller (22); and the cleaning brush (23) is detachably connected to the cleaning roller (22).

8. The asphalt pavement construction joint cleaning device according to claim 7, characterized in that: The cleaning roller (22) is evenly provided with a plurality of slots (26) along the circumferential direction, an insert block (27) is provided at one end of the cleaning brush (23), and the slot (26) is engaged with the insert block (27).

9. The asphalt pavement construction joint cleaning device according to claim 8, characterized in that: The cleaning assembly (2) further comprises a baffle (24), wherein the baffle (24) is arranged above the cleaning roller (22) and the cleaning brush (23), and a wear-resistant layer is arranged on the lower surface of the baffle (24).

10. The asphalt pavement construction joint cleaning device according to claim 9, characterized in that: The baffle (24) is connected to the fixing seat (21) via a hinge shaft, a support spring (25) is arranged between the fixing seat (21) and the baffle (24), and the baffle (24), the fixing seat (21) and the support spring (25) form a triangular structure.

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