An emulsified asphalt spraying equipment

Abstract

This utility model relates to an emulsified asphalt spraying device, belonging to the field of road maintenance technology. The emulsified asphalt spraying device includes: a main body of the spraying equipment and a spraying pipe disposed in front of it, with multiple spray nozzles connected to the outlet end of the spraying pipe; after the emulsified asphalt is sprayed onto the spraying pipe, an air pump is activated to inject gas into the spraying pipe, thereby discharging any residual emulsified asphalt from the spraying pipe, effectively reducing the amount of residual emulsified asphalt in the spraying pipe, and also avoiding the problem of blockage at the outlet caused by hardened residual emulsified asphalt; when the gas is injected into the spraying pipe, the gas first contacts the guide strips, which are designed in a spiral pattern. The gas pressure on the guide strips drives the movable shell to rotate. As the movable shell rotates, the emulsified asphalt continuously flowing downwards in the spraying pipe is thrown outwards by centrifugal force, effectively improving the self-cleaning effect of the emulsified asphalt.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance technology, and in particular to an emulsified asphalt spraying device. Background Technology

[0002] Road maintenance primarily extends the service life of pavements through regular inspections, crack repairs, pothole fillings, and recoating with a protective layer. Emulsified asphalt spraying equipment plays a crucial role in this process. It evenly sprays emulsified asphalt onto the road surface, forming a protective layer that reduces moisture penetration and enhances anti-aging properties. This equipment improves spraying efficiency and uniformity, ensuring the road surface has good compressive strength and skid resistance, making it particularly suitable for applications such as road repair, preventative maintenance, and permeable pavement protection.

[0003] A search revealed Chinese patent "A Novel Emulsified Asphalt Sprayer" (authorization announcement number CN221345184U). This utility model provides a novel emulsified asphalt sprayer, comprising a vehicle body. An emulsified asphalt tank is fixedly connected to the upper right side of the vehicle body, and a feed hopper is integrally connected to the upper left opening of the emulsified asphalt tank, with a hopper cover threaded to the upper end of the feed hopper. A discharge valve is threaded to the lower right opening of the emulsified asphalt tank. A delivery pump is bolted to the upper right side of the vehicle body, and the delivery pump is located to the right of the discharge valve, with the right end of the discharge valve connected to the input pipe of the delivery pump. Support frames are bolted to the front and rear sides of the right side of the vehicle body, and a spray pipe overlaps the upper right side of the support frames. The design of the emulsified asphalt collection box, connecting frame, rotating sleeve, and quick-release bolts in this utility model facilitates the collection of dripping emulsified asphalt, effectively preventing road pollution caused by emulsified asphalt.

[0004] Although the above-mentioned emulsified asphalt spraying device can collect the emulsified asphalt dripping from the spraying pipe using a collection box, residues will still appear on the inner wall of the spraying pipe as it drips downwards. If the emulsified asphalt adheres to the inner wall of the spraying pipe for a long time without being cleaned, it is easy to harden, leading to uneven spraying or nozzle blockage. Utility Model Content

[0005] Therefore, it is necessary to provide an emulsified asphalt spraying device that addresses the problem of residue on the inner wall of the spray nozzle, which is not possible with the existing emulsified asphalt spraying device.

[0006] An emulsified asphalt spraying device includes: a spraying device body and a spraying pipe disposed in front of it, wherein the discharge end of the spraying pipe is connected to multiple spraying pipes;

[0007] A self-cleaning component is disposed at the discharge end of the nozzle;

[0008] The self-cleaning component includes a movable shell located at the discharge end of the nozzle, and a guide bar is provided on the upper inner side of the movable shell.

[0009] In one embodiment, the self-cleaning assembly further includes a housing fixed to the discharge end of the nozzle, the movable shell being located within the housing, and the housing having an L-shaped half-section design.

[0010] In one embodiment, the inner wall of the housing is provided with a movable groove, and a movable ring is slidably connected in the movable groove. The inner ring of the movable ring is fixedly connected to the movable shell.

[0011] In one embodiment, a conical groove is provided on the upper inner side of the movable shell, the guide bar is located in the conical groove, the guide bar is inclined, and the inclination angle of the guide bar is consistent with that of the conical groove.

[0012] In one embodiment, multiple guide bars are arranged in a circular array around the movable shell as the axis, and the multiple guide bars are arranged in a spiral.

[0013] In one embodiment, the spray pipe has connecting holes on both sides, and a T-shaped pipe connects the two connecting ports of the spray pipe. The air inlet of the T-shaped pipe is connected to an air pump, which is located in the main body of the spraying equipment.

[0014] In one embodiment, a shield is fixedly connected to the lower part of the spray pipe and on the surface of the spray pipe via a connecting bracket, the shield being made of stainless steel.

[0015] In one embodiment, both sides below the shield are fixedly connected to shielding plates by rivets, and the two shielding plates are designed in a figure-eight shape. Beneficial effects

[0016] 1. After the emulsified asphalt is sprayed through the nozzle, the air pump can be started to inject gas into the nozzle through the spray pipe, thereby expelling the residual emulsified asphalt in the nozzle. This can effectively reduce the amount of emulsified asphalt residue in the nozzle and also avoid the problem of blockage at the outlet caused by the hardening of residual emulsified asphalt.

[0017] 2. When the gas is injected into the nozzle, the gas will first come into contact with the guide strips. The multiple guide strips are designed in a spiral shape. The gas can squeeze the guide strips to drive the movable shell to rotate. When the movable shell rotates, the emulsified asphalt that is continuously flowing downward in the nozzle will be thrown outward by centrifugal force, which can effectively improve the self-cleaning effect of the emulsified asphalt. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partial structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the nozzle structure of this utility model;

[0022] Figure 4 This is a structural breakdown diagram of the self-cleaning component of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the movable shell of this utility model.

[0024] Figure label:

[0025] 1. Main body of the spraying equipment; 2. Shielding cover; 3. Spray pipe; 4. Air pump; 5. T-pipe; 6. Spray pipe; 7. Self-cleaning component; 701. Guide bar; 702. Housing; 703. Movable housing; 704. Movable ring; 705. Movable groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following is combined Figure 1 - Figure 5 This invention describes an emulsified asphalt spraying device.

[0028] In one embodiment, an emulsified asphalt spraying device includes: a spraying device body 1 and a spraying pipe 3 disposed in front of it, wherein the discharge end of the spraying pipe 3 is connected to a plurality of spraying pipes 6.

[0029] Self-cleaning component 7 is located at the discharge end of nozzle 6;

[0030] The spraying steps of emulsified asphalt are as follows: The prepared emulsified asphalt is pumped to the insulated storage tank on the equipment for storage. When spraying is required, the emulsified asphalt in the storage tank is extracted by a pressure pump, and after impurities are removed by a filter, it enters the spray pipe 3. The spray pipe 3 is usually heated to maintain the appropriate viscosity and fluidity of the emulsified asphalt. The high-pressure emulsified asphalt finally reaches the spray pipe 6 located at the rear of the equipment. When the operator starts the spraying command, the control valve opens, and the high-pressure emulsified asphalt is sprayed out evenly in a fan-shaped mist from the nozzle, covering the road surface of the preset width.

[0031] The spraying width, flow rate, and pressure can all be adjusted according to construction requirements. Modern equipment is usually equipped with an automatic control system that can automatically adjust the spraying volume in real time according to the vehicle speed to ensure the accuracy and uniformity of the spraying volume per unit area.

[0032] like Figure 3 , Figure 4 and Figure 5 As shown, the self-cleaning component 7 includes a movable shell 703 disposed at the discharge end of the nozzle 6, and a guide bar 701 disposed on the upper inner side of the movable shell 703; the self-cleaning component 7 also includes a sleeve 702 fixed to the discharge end of the nozzle 6, with the movable shell 703 located in the sleeve 702, and the sleeve 702 having an L-shaped half-section design; a movable groove 705 is formed on the inner wall of the sleeve 702, and a movable ring 704 is slidably connected in the movable groove 705, with the inner ring of the movable ring 704 fixedly connected to the movable shell 703; a conical groove is formed on the upper inner side of the movable shell 703, and the guide bar 701 is located in the conical groove, with the guide bar 701 having an inclined design and the inclination angle of the guide bar 701 being consistent with the conical groove; multiple guide bars 701 are arranged in a ring array around the movable shell 703 as the axis, and the multiple guide bars 701 are arranged in a spiral manner;

[0033] After the main body 1 of the spraying equipment sprays emulsified asphalt through the spray pipe 3 and the spray pipe 6, the material solenoid valve of the emulsified asphalt is closed, and then the air pump 4 is turned on. At this time, the air pump 4 injects gas into the spray pipe 3 through the three-way pipe 5. Then the remaining emulsified asphalt in the spray pipe 3 will be blown into the spray pipe 6 by the gas. The gas can quickly discharge the residual emulsified asphalt through the spray pipe 6 to prevent the problem of residual emulsified asphalt dripping and easily adhering to the pipe wall of the spray pipe 6 from occurring.

[0034] By connecting the three-way pipe 5 to both sides of the spray pipe 3 as described above, the gas can be concentrated from both sides to the middle during injection, which can completely blow away the emulsified asphalt residue in the spray pipe 3 and prevent some residue from accumulating in the dead corners of the spray pipe 3 and thus not being effectively cleaned.

[0035] After the gas enters the interior of the movable shell 703, it will come into contact with the guide strips 701. Since the multiple guide strips 701 are spirally designed, the guide strips 701 can drive the movable shell 703 to rotate by the gas compression in contact with their surfaces. At this time, the emulsified asphalt that continuously enters the movable shell 703 from the nozzle 6 will be quickly thrown out by the movable shell 703 using centrifugal force. This not only improves the discharge efficiency of the emulsified asphalt, but also effectively reduces the residue of the emulsified asphalt.

[0036] Both sides of the spray pipe 3 are provided with connecting holes, and a three-way pipe 5 is connected between the two connecting ports of the spray pipe 3. The air inlet end of the three-way pipe 5 is connected to an air pump 4, which is located in the main body 1 of the spraying equipment.

[0037] Below the spray pipe 3 and on the surface of the spray pipe 6, a shield 2 is fixedly connected by a connecting bracket. The shield 2 is made of stainless steel. Both sides below the shield 2 are fixedly connected with shield plates by rivets. The two shield plates are designed in a figure-eight shape.

[0038] Working principle: After the main body 1 of the spraying equipment sprays emulsified asphalt through the spray pipe 3 and the spray pipe 6, the air pump 4 is turned on. First, the air pump 4 injects gas into the spray pipe 3 through the three-way pipe 5. Then, the remaining emulsified asphalt in the spray pipe 3 will be blown into the spray pipe 6 by the gas. On the one hand, the gas can quickly discharge the remaining emulsified asphalt through the spray pipe 6 to prevent the emulsified asphalt residue from dripping and easily adhering to the pipe wall of the spray pipe 6. On the other hand, after the gas enters the interior of the movable shell 703, it will come into contact with the guide strips 701. At this time, the multiple guide strips 701 can drive the movable shell 703 to rotate by the gas compression, so as to quickly throw out the emulsified asphalt that is continuously blown into the spray pipe 6 by the centrifugal force, thereby reducing the residue of emulsified asphalt.

[0039] It should be noted that the main body of the spraying equipment 1, spray pipe 3, air pump 4, three-way pipe 5 and spray pipe 6 mentioned above are all components with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the main body of the spraying equipment 1 and the air pump 4 are powered by built-in power supplies, which will not be described in detail here.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An emulsified bitumen spraying apparatus, characterized in that, include: The spraying equipment body (1) and the spraying pipe (3) set in front of it, the discharge end of the spraying pipe (3) is connected to multiple spraying pipes (6). The self-cleaning component (7) is disposed at the discharge end of the nozzle (6); The self-cleaning component (7) includes a movable shell (703) located at the discharge end of the nozzle (6), and a guide strip (701) is provided on the upper inner side of the movable shell (703).

2. The emulsified asphalt spraying apparatus according to claim 1, characterized by The self-cleaning component (7) also includes a housing (702) fixed to the discharge end of the nozzle (6), the movable shell (703) is located in the housing (702), and the half-section of the housing (702) is designed in an L shape.

3. The emulsified asphalt spraying equipment according to claim 2, characterized in that, The inner wall of the housing (702) is provided with a movable groove (705), and a movable ring (704) is slidably connected in the movable groove (705). The inner ring of the movable ring (704) is fixedly connected to the movable shell (703).

4. The emulsified asphalt spraying equipment according to claim 1, characterized in that, The upper inner part of the movable shell (703) is provided with a conical groove, and the guide bar (701) is located in the conical groove. The guide bar (701) is designed to be inclined, and the inclination angle of the guide bar (701) is consistent with that of the conical groove.

5. The emulsified asphalt spraying equipment according to claim 1, characterized in that, The guide bars (701) are arranged in a ring array with the movable shell (703) as the axis, and the multiple guide bars (701) are arranged in a spiral.

6. The emulsified asphalt spraying equipment according to claim 1, characterized in that, Both sides of the spray pipe (3) are provided with connecting holes, and a three-way pipe (5) is connected between the two connecting ports of the spray pipe (3). The air inlet end of the three-way pipe (5) is connected to an air pump (4), and the air pump (4) is located in the main body (1) of the spraying equipment.

7. The emulsified asphalt spraying equipment according to claim 1, characterized in that, A shield (2) is fixedly connected to the spray pipe (3) below and on the surface of the spray pipe (6) via a connecting bracket. The shield (2) is made of stainless steel.

8. The emulsified asphalt spraying equipment according to claim 7, characterized in that, Both sides of the shield (2) below are fixedly connected with shielding plates by rivets, and the two shielding plates are designed in a figure-eight shape.

Images