A spraying apparatus for reducing the spread of emulsified asphalt into the surrounding environment when sprayed

Abstract

The application discloses a kind of to reduce emulsified asphalt spraying when spreading around spraying equipment and method, equipment includes upper shell, lower shell, rotating plate, impeller and driving part, rotating plate can be rotatably arranged between the upper shell and lower shell;The rotating plate is opened with through hole, and the upper shell and the rotating plate form the liquid storage cavity for being connected with material source;The blade in the impeller is inclined to the same side;The upper shell edge and lower shell edge are respectively opened with first air hole and second air hole opposite to the impeller;Driving part is arranged on the upper shell, and the driving part is connected with the central shaft and can drive it to rotate.The method is carried out emulsified asphalt spraying using the equipment, and the problem that emulsified asphalt can form diffusion atomization area around spraying position in the process of spraying, cause damage to the leaf surface of low green plants growing nearby and endanger the health of nearby staff can be solved.

Description

Technical Field

[0001] This invention relates to the field of road construction equipment technology, specifically to a spraying device and method for reducing the spread of emulsified asphalt during spraying. Background Technology

[0002] Emulsified asphalt is produced by dispersing viscous asphalt into micro-droplets in water containing an emulsifier and a stabilizer through thermal melting and mechanical action, resulting in an oil-in-water or water-in-oil emulsion (the specific emulsion depends on the type of emulsifier). Emulsified asphalt is a road construction material that is typically used at high temperatures. It is produced by mechanically stirring and chemically stabilizing (emulsifying) the asphalt, diffusing it into water to liquefy it into a liquid with very low viscosity and excellent fluidity at room temperature. It can be used at room temperature and can also be used with cold, damp aggregates. It is widely used in road maintenance projects.

[0003] When repairing road surface defects, emulsified asphalt is sprayed. Due to its good fluidity, emulsified asphalt can be directly pumped or transported by air pressure as a power source and sprayed through nozzles. However, because of its good fluidity, after being sprayed from the nozzle, it will form a diffused mist zone around the spraying location, which will damage the leaves of low-growing green plants nearby and endanger the health of nearby workers. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical problem this invention aims to solve is to provide a spraying device and method that reduces the diffusion of emulsified asphalt during spraying. This addresses the issue that existing technologies cause a diffused atomized zone around the spraying location during the spraying process, damaging the leaves of nearby low-growing green plants and endangering the health of nearby workers.

[0005] To achieve the above objectives, the present invention provides a spraying device that reduces the spread of emulsified asphalt during spraying, comprising:

[0006] Upper shell;

[0007] The lower housing can be fastened together with the upper housing;

[0008] A rotating plate is rotatably disposed between the upper and lower shells; the rotating plate has a through hole extending along the thickness direction, the middle of the upper shell is recessed upwards, and a liquid storage cavity for communicating with the material source is formed between the upper shell and the rotating plate;

[0009] An impeller is sleeved and fixed on the outside of the rotating plate, and the blades of the impeller are inclined to the same side; the upper shell edge and the lower shell edge are respectively provided with a first vent hole and a second vent hole opposite to the impeller; and

[0010] A drive unit is disposed on the upper housing. A central shaft is connected to the center of the top surface of the rotating plate. The drive unit is connected to the central shaft and can drive it to rotate.

[0011] Furthermore, the top edge of the upper shell is provided with an upwardly extending first annular surrounding plate, and an air guide groove is formed between the inner side of the first annular surrounding plate and the side wall of the liquid storage cavity, and the first vent hole is opened at the bottom of the air guide groove.

[0012] Furthermore, the air guide groove is covered with an annular cover plate, and the annular cover plate has an exhaust hole.

[0013] Furthermore, the lower housing includes an annular base plate covering the bottom surface of the impeller. The outer and inner annular surfaces of the annular base plate are respectively provided with a second annular shroud and a third annular shroud protruding towards the rotating plate. The second vent hole is opened on the annular base plate and is located between the second annular shroud and the third annular shroud.

[0014] Furthermore, multiple through holes are provided, and the multiple through holes are distributed in a ring array with the center of the rotating plate as the center.

[0015] Furthermore, a spray pipe is installed inside the through hole, and a sealing plate covers the lower end of the spray pipe. The sealing plate has several spray holes; the spray holes are arranged in multiple concentric rings with the center of the sealing plate as the center.

[0016] Furthermore, the spray hole faces inwards towards the center of the sealing plate at one end of the spray pipe.

[0017] Furthermore, the spray pipe is rotatably disposed within the through hole, and a support plate rotatably fitted within the lower housing is disposed below the rotating plate. The inner ring of the annular bottom plate protrudes inward to form a limiting ring covering the edge below the support plate.

[0018] The lower end of the spray pipe passes through the support plate, and a retaining ring is fixedly connected to the outside of the spray pipe. The retaining ring is engaged between the rotating plate and the support plate.

[0019] Furthermore, an external gear ring is fixedly provided outside the retaining ring, and an internal gear ring that meshes with the external gear ring is provided on the third annular plate.

[0020] A method for reducing the spread of emulsified asphalt during spraying, comprising using the aforementioned spraying equipment for reducing the spread of emulsified asphalt during spraying, including:

[0021] A spraying area for spraying emulsified asphalt is set up, and an air channel is set up around the spraying area and a propulsion unit is set up in the air channel to promote the air flow. During the spraying of emulsified asphalt, the propulsion unit pushes the air in the air channel upward. A collection unit for collecting gas is set up at the outlet end of the air channel.

[0022] The beneficial effects of this invention are:

[0023] The above-mentioned spraying equipment reduces the spread of emulsified asphalt to the surrounding area during spraying. and methods By driving the propulsion unit inside the airflow channel, the air inside the airflow channel flows upward, which can create negative pressure around the spraying area. The emulsified asphalt that diffuses outward around the spraying area will be drawn into the airflow channel under the action of negative pressure and discharged upward. The airflow channel can be connected to filter structures such as cloth bags through pipes to purify the discharged air, which can effectively reduce damage to the leaves of surrounding green plants and reduce the harm to the health of nearby workers.

[0024] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 This is a three-dimensional schematic diagram of a spraying device that reduces the spread of emulsified asphalt to the surrounding area during spraying, according to an embodiment of the present invention.

[0027] Figure 2 for Figure 1 The diagram shows a three-dimensional view from another angle of a spraying device that reduces the spread of emulsified asphalt during spraying.

[0028] Figure 3 for Figure 1 A top view of a spraying device that reduces the spread of emulsified asphalt during spraying.

[0029] Figure 4 for Figure 3 Enlarged view of AA;

[0030] Figure 5 This is a schematic diagram of the upper shell structure;

[0031] Figure 6This is a schematic diagram of the lower shell structure;

[0032] Figure 7 This is a schematic diagram of the transmission structure between the external gear ring and the internal gear ring.

[0033] Figure 8 This is a schematic diagram of the cross-sectional structure of the spray pipe;

[0034] Figure label:

[0035] 1. Upper shell; 2. Lower shell; 3. Rotating plate; 4. Impeller; 5. Liquid storage chamber; 6. Central shaft; 7. Drive unit; 8. First vent hole; 9. Second vent hole; 10. First annular surrounding plate; 12. Annular bottom plate; 13. Second annular surrounding plate; 14. Third annular surrounding plate; 15. Annular cover plate; 16. Exhaust port; 17. Spray pipe; 18. Sealing plate; 19. Spray hole; 20. Support plate; 21. Limiting ring; 22. Retaining ring; 23. External gear ring; 24. Internal gear ring. Detailed Implementation

[0036] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0037] Please see Figures 1 to 8 The present invention provides a spraying device for reducing the spread of emulsified asphalt to the surrounding area during spraying, comprising an upper housing 1, a lower housing 2, a rotating plate 3, an impeller 4, and a drive unit 7.

[0038] Specifically, the upper housing 1 and the lower housing 2 can be interlocked, and the rotating plate 3 is rotatably disposed between the upper housing 1 and the lower housing 2. The rotating plate 3 has a through hole extending along its thickness direction. The middle of the upper housing 1 is recessed upwards, and a liquid storage chamber 5 for connecting the material source is formed between the upper housing 1 and the rotating plate 3. The impeller 4 is sleeved and fixed on the rotating plate 3, and the blades in the impeller 4 are inclined to the same side. A first vent hole 8 and a second vent hole 9, opposite to the impeller 4, are respectively provided on the edges of the upper housing 1 and the lower housing 2. A drive unit 7 is disposed on the upper housing 1. A central shaft 6 is connected to the center of the top surface of the rotating plate 3. The drive unit 7 is connected to the central shaft and can drive its rotation.

[0039] The upper shell 1 and the lower shell 2 are fastened together, serving as the base for the rotating plate 3. The upper shell 1 and the rotating plate 3 form a liquid storage chamber 5 for containing the material source, which is used to connect with a pump or air conveying mechanism. Emulsified asphalt can be sent into the liquid storage chamber 5 by the pump or air conveying mechanism, and can be sprayed outward through the through hole under pressure. The sprayed area is the spraying area.

[0040] A first vent 8 and a second vent 9, respectively located at the edges of the upper housing 1 and the lower housing 2, face each other to form an airflow channel for air movement. An impeller 4, fixedly mounted on the outside of the rotating plate 3, is located between the first vent 8 and the second vent 9. When the rotating plate 3 rotates under the drive of the drive unit 7, it drives the impeller 4 to rotate synchronously, acting as a propulsion unit to push air flow within the airflow channel. The drive unit 7 can be a power device such as a motor whose output shaft is connected to the center of the rotating plate 3.

[0041] In this embodiment, the top edge of the upper shell 1 is provided with an upwardly extending first annular surrounding plate 10, and an air guide groove is formed between the inner side of the first annular surrounding plate 10 and the side wall of the liquid storage cavity 5. The first vent hole 8 is opened at the bottom of the air guide groove.

[0042] By setting the first annular surrounding plate 10 to cooperate with the side wall of the liquid storage chamber 5 to form an annular air guide groove, it is possible to facilitate the collection of air after it is transported by the impeller 4 through the first vent hole 8, which is conducive to the collection and discharge of gas.

[0043] In a preferred embodiment, an annular cover plate 15 is provided on the air guide channel, and an exhaust hole 16 is provided on the annular cover plate 15. The annular cover plate 15 is used to seal the air guide channel and to discharge the air in the air guide channel to the outside through the exhaust hole 16. It can be connected to dust collection equipment such as bag filters or introduced into washing equipment such as water washing equipment for the collection and treatment of discharged air.

[0044] In this embodiment, the lower housing 2 includes an annular base plate 12 covering the bottom surface of the impeller 4. The outer and inner annular surfaces of the annular base plate 12 are respectively provided with a second annular surrounding plate 13 and a third annular surrounding plate 14 protruding toward the rotating plate 3. The second vent 9 is opened on the annular base plate 12 and is located between the second annular surrounding plate 13 and the third annular surrounding plate 14.

[0045] The second annular surrounding plate 13 and the third annular surrounding plate 14 together with the annular bottom plate 12 form an annular groove structure, which facilitates the collection of air entering through the second vent 9. The groove structure and the air guide groove are fastened together to form a connected channel, and the impeller 4 is located between the channels, which facilitates the flow of air within the channels.

[0046] In this embodiment, multiple through holes are provided, and the multiple through holes are distributed in a ring array with the center of the rotating plate 3 as the center, which can improve the uniformity of spraying.

[0047] As another preferred embodiment, a spray pipe 17 is installed in the through hole, and a sealing plate 18 is provided at the lower end of the spray pipe 17. A plurality of spray holes 19 are opened on the sealing plate 18; the plurality of spray holes 19 are arranged in a concentric ring with the center of the sealing plate 18 as the center.

[0048] The lower end of the spray pipe 17 is sealed by a sealing plate 18, and the sealing plate 18 acts as an injection port for emulsified asphalt by opening several injection holes 19, which are distributed in multiple concentric rings, thereby further improving the dispersion effect of emulsified asphalt spraying operations.

[0049] In this embodiment, the spray pipe 17 is rotatably disposed within the through hole. Below the rotating plate 3, a support plate 20 is provided, which is rotatably fitted within the lower housing 2. The inner ring of the annular base plate 12 protrudes inward to form a limiting ring 21 covering the lower edge of the support plate 20. The lower end of the spray pipe 17 passes through the support plate 20, and a retaining ring 22 is fixedly connected to the outside of the spray pipe 17. The retaining ring 22 is engaged between the rotating plate 3 and the support plate 20.

[0050] The support plate 20 serves as a swing limiting structure at the lower end of the spray pipe 17. The support plate 20 is engaged with the limiting ring 21, so that the retaining ring 22 is clamped between the rotating plate 3 and the support plate 20, allowing the spray pipe 17 to rotate within the through hole while maintaining axial fixation.

[0051] In a more preferred embodiment, an external gear ring 23 is fixedly provided on the outside of the retaining ring 22, and an internal gear ring 24 that meshes with the external gear ring 23 is provided on the third annular surrounding plate 14. When the rotating plate 3 rotates, it will drive multiple spray pipes 17 to revolve around the center of the rotating plate 3. In addition, the spray pipes 17 mesh with the internal gear ring 24 on the third annular surrounding plate 14, which is in a relatively fixed state, through the external gear ring 23 outside the retaining ring 22. When the spray pipes 17 revolve, they will also be pushed to rotate under the action of the cooperation between the internal gear ring 24 and the external gear ring 23. The continuous rotation during the spraying process can further improve the spraying effect on the emulsified asphalt. Specifically, the spray hole 19 is inclined sequentially towards the center of the sealing plate 18 at the end facing the inside of the spray pipe 17.

[0052] The spray nozzle 19 has one end facing the spray pipe 17 as the inlet end and the other end as the outlet end. That is, the outlet end will be tilted to one side and rotate during the spraying process. With the above arrangement, the centrifugal force of the spray nozzle 19 can be used to make the emulsified asphalt be discharged outward from the spray nozzle 19.

[0053] In addition, the present invention provides a method for reducing the spread of emulsified asphalt during spraying, which is implemented using the aforementioned equipment for reducing the spread of emulsified asphalt during spraying, and the steps are as follows:

[0054] A spraying area for spraying emulsified asphalt is set up, and air channels are set up around the spraying area. A propulsion unit is set up in the air channels to push the air upward during the spraying of emulsified asphalt. A collection unit for collecting gas is set up at the outlet end of the air channels.

[0055] In practice, the spraying area can consist of one or more perforated structures, nozzles, etc., with an annular airflow channel set up around the spraying area. By driving the propulsion unit inside the airflow channel, the air inside the airflow channel can be driven to flow upward, which can create negative pressure around the spraying area. The emulsified asphalt that diffuses outward around the spraying area will be drawn into the airflow channel under the action of negative pressure and discharged upward. The airflow channel can be connected to filter structures such as cloth bags through pipes to purify the discharged air, which can effectively reduce damage to the leaves of surrounding green plants and reduce the harm to the health of nearby workers.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A spraying device for reducing the spread of emulsified asphalt to surrounding areas during spraying, characterized in that, include: Upper casing; The lower housing can be fastened together with the upper housing; A rotating plate is rotatably disposed between the upper and lower shells; the rotating plate has a through hole extending along the thickness direction, the middle of the upper shell is recessed upwards, and a liquid storage cavity for communicating with the material source is formed between the upper shell and the rotating plate; An impeller is sleeved and fixed outside the rotating plate, and the blades in the impeller are inclined to the same side; the upper shell edge and the lower shell edge are respectively provided with a first vent hole and a second vent hole opposite to the impeller; and A drive unit is disposed on the upper housing. A central shaft is connected to the center of the top surface of the rotating plate. The drive unit is connected to the central shaft and can drive it to rotate. The upper shell has an upwardly extending first annular surrounding plate at its top edge. A venting groove is formed between the inner side of the first annular surrounding plate and the side wall of the liquid storage chamber. The first vent is located at the bottom of the venting groove. The air guide groove is covered with an annular cover plate, and an exhaust hole is opened on the annular cover plate; The lower housing includes an annular base plate covering the bottom surface of the impeller. The outer and inner annular surfaces of the annular base plate are respectively provided with a second annular shroud and a third annular shroud protruding toward one side of the rotating plate. The second vent is opened on the annular base plate and is located between the second annular shroud and the third annular shroud.

2. The spraying equipment for reducing the spread of emulsified asphalt to the surrounding area during spraying, as described in claim 1, is characterized in that: The through holes are provided in multiple ways, and the multiple through holes are distributed in a ring array with the center of the rotating plate as the center.

3. The spraying equipment for reducing the spread of emulsified asphalt to the surrounding area during spraying, as described in claim 2, is characterized in that: A spray pipe is installed inside the through hole, and a sealing plate covers the lower end of the spray pipe. Several spray holes are opened on the sealing plate; the several spray holes are distributed in multiple concentric rings with the center of the sealing plate as the center.

4. The spraying equipment for reducing the spread of emulsified asphalt to the surrounding area during spraying, as described in claim 3, is characterized in that: The spray holes face inwards from the end of the spray pipe and gradually tilt toward the center of the sealing plate.

5. The spraying equipment for reducing the spread of emulsified asphalt to the surrounding area during spraying, as described in claim 4, is characterized in that: The spray pipe is rotatably disposed in the through hole, and a support plate is provided below the rotating plate and rotatably fitted in the lower housing. The inner ring of the annular bottom plate protrudes inward to form a limiting ring covering the edge of the support plate. The lower end of the spray pipe passes through the support plate, and a retaining ring is fixedly connected to the outside of the spray pipe. The retaining ring is engaged between the rotating plate and the support plate.

6. The spraying equipment for reducing the spread of emulsified asphalt to the surrounding area during spraying, as described in claim 5, is characterized in that: An external gear ring is fixedly provided outside the retaining ring, and an internal gear ring that meshes with the external gear ring is provided on the third annular plate.

7. A method for reducing the spread of emulsified asphalt to surrounding areas during spraying, characterized in that: Spraying emulsified asphalt using the spraying equipment described in any one of claims 1-6 to reduce the spread of emulsified asphalt to the surrounding area during spraying includes: A spraying area for spraying emulsified asphalt is set up, and an air flow channel formed by a first vent and a second vent arranged opposite each other is set up around the spraying area. An impeller is set up in the air flow channel to push the air in the air flow channel upward during the spraying of emulsified asphalt. A collection part for collecting gas is set up at the outlet end of the air flow channel.

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