Venturi cyclone dust removal device for road maintenance vehicle

Abstract

This utility model relates to a Venturi cyclone dust collector for road maintenance vehicles. It includes a Venturi cyclone dust collector body installed on the platform of the road maintenance vehicle. The Venturi cyclone dust collector body consists of an intake pipe, a Venturi tube, a cyclone dust collector, a dust collector fan, a chimney, and a water tank. A dust collector fan is installed at the upper end of the cyclone dust collector. One side of the dust collector fan is connected to one end of the intake pipe via the Venturi tube, and the other end of the intake pipe is welded to the outlet of the mixing pot. A chimney is installed at the outlet of the dust collector fan. The lower end of the cyclone dust collector is fixed to an opening on the upper surface of the water tank via a flange. The lower surface of the water tank is bolted to the platform in the middle of the road maintenance vehicle. A water spray pipe is installed on the side of the water tank. This utility model has the advantages of simple and reasonable structure, stable operation, and high-efficiency dust removal.

Description

Technical Field

[0001] This utility model belongs to the field of road construction and maintenance machinery and equipment, and relates to a Venturi cyclone dust removal device for road maintenance vehicles. Background Technology

[0002] Asphalt pavements are prone to various defects under vehicle loads and the influence of rain, wind, and other factors, severely affecting their road performance and driving experience. Therefore, regular maintenance and repair are necessary. During asphalt pavement maintenance, excavation and milling of damaged pavements are required, generating a large amount of waste asphalt mixture. Currently, to promote green maintenance concepts and achieve the recycling of waste materials, road maintenance departments often use road maintenance vehicles to on-site add recycling agents, new asphalt, and new aggregates to the old asphalt mixture excavated and milled on-site, reheating and mixing it to generate new asphalt mixture, which is then repaved on the original excavated pavement. However, the heating and mixing process generates a large amount of asphalt dust. Currently, most road maintenance vehicles are equipped with only a single cyclone dust collector due to chassis space limitations and technical reasons, resulting in low dust removal efficiency. The large amount of dust generated during operation is directly discharged into the atmosphere, seriously polluting the environment.

[0003] To address this issue, a Venturi cyclone dust removal device for road maintenance vehicles was designed to overcome the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a Venturi cyclone dust removal device for road maintenance vehicles that is simple and reasonable in structure, easy to install, and efficient in dust removal.

[0005] This utility model is achieved through the following technical solution: a Venturi cyclone dust removal device for a road maintenance vehicle, comprising a Venturi cyclone dust removal device body installed on the platform of the road maintenance vehicle. The Venturi cyclone dust removal device body consists of an air suction pipe, a Venturi tube, a cyclone dust collector, a dust removal fan, a chimney, and a water tank. A dust removal fan is installed at the upper end of the cyclone dust collector. One side of the dust removal fan is connected to one end of the air suction pipe through the Venturi tube. The other end of the air suction pipe is welded to the air outlet of the mixing pot. A chimney is installed at the air outlet of the dust removal fan. The lower end of the cyclone dust collector is fixed to an opening on the upper surface of the water tank through a flange. The lower surface of the water tank is fixed to the platform in the middle of the road maintenance vehicle by bolts. A water spray pipe is installed on the side of the water tank.

[0006] Preferably, the venturi tube consists of an inlet cylindrical tube, a conical contraction tube, a cylindrical throat, a conical diffuser, an outlet cylindrical tube, and at least one nozzle holder. The inlet cylindrical tube, conical contraction tube, cylindrical throat, conical diffuser, and outlet cylindrical tube are sequentially connected and assembled to form the tube body of the venturi tube. A nozzle holder is welded to the side of the conical contraction tube and the conical diffuser, and a U-shaped handle is also provided on the side of the conical diffuser for convenient installation and debugging.

[0007] Preferably, the water spray pipe consists of a circulation pipe, a filter, a water pump, and nozzles. The water pump and the filter are installed sequentially on the circulation pipe. At least one nozzle is provided on the end of the circulation pipe near the venturi tube. Each nozzle is connected to a nozzle fixing seat provided on the venturi tube by a thread. The other end of the circulation pipe is connected to the side of the water tank.

[0008] Preferably, the water tank consists of a tank body, an inspection port cover, and valves. The tank body has a cuboid structure, with a circular opening and a rectangular opening on its upper surface. Circular flanges and rectangular flanges are welded to the circular and rectangular openings, respectively, and are connected to the bottom of the cyclone dust collector and the inspection port cover through the circular and rectangular flanges. A water inlet pipe and a water outlet pipe are respectively provided on the upper and lower surfaces of the tank body. A water suction pipe and an overflow pipe with a valve are respectively provided on the side of the tank body. The overflow pipe is higher than the water suction pipe, and the water suction pipe is installed at the water suction port on the side of the tank and connected to the end of the circulation pipe.

[0009] Preferably, the cyclone dust collector consists of a spiral cylindrical body, a conical cylindrical body, a dust suction pipe, and an air outlet pipe. The spiral cylindrical body and the conical cylindrical body are welded together to form the outer shell of the cyclone dust collector. An air outlet pipe is embedded and welded in the middle of the top of the spiral cylindrical body. A dust removal fan is installed on the upper part of the air outlet pipe. A dust suction pipe is also installed on the side of the spiral cylindrical body and is connected to the air suction pipe.

[0010] Preferably, the suction port is a rectangular channel formed by welding four steel plates together. A circular flange is welded to the head of the rectangular channel and connected to the flange at the outlet end of the Venturi tube by bolts. The tail of the suction port is welded to the upper side of the spiral cylinder. The spiral cylinder is a cylindrical body formed by rolling steel plates, with a spiral steel plate welded to the top. The exhaust pipe is formed by welding a section of circular steel pipe and a flange. The circular steel pipe is inserted into the central circular hole formed by the spiral steel plate at the top of the spiral cylinder and fixed by welding. The upper part of the conical cylinder is fixed to the lower part of the spiral cylinder by welding, and a connecting flange is vertically welded to the lower part of the conical cylinder. It is fixed to the upper part of the water tank by bolts.

[0011] Preferably, the suction pipe consists of a straight pipe and a 90° elbow pipe, wherein the straight pipe is connected to the suction port pipe of the cyclone dust collector, and the 90° elbow pipe is installed at the end of the straight pipe away from the cyclone dust collector through a flange, and the outlet of the 90° elbow pipe is welded downward to the air outlet of the mixing pot.

[0012] Preferably, the conical cylinder 34 is an inverted conical cylinder that is larger at the top and smaller at the bottom.

[0013] Preferably, the suction port is a rectangular channel formed by welding four steel plates together.

[0014] Preferably, the chimney is welded together from five irregularly shaped steel plates and a flange, and the dust removal fan is a centrifugal fan driven by a hydraulic motor.

[0015] The beneficial effects of this utility model are as follows:

[0016] The Venturi cyclone dust removal device designed for road maintenance vehicles in this utility model uses a dust removal fan as a gas power source to connect Venturi tube dust removal and cyclone dust removal. The dust is first introduced into the Venturi tube by an induced draft fan, and the dust is cleaned by the spray mechanism inside the Venturi tube. Then it passes through the cyclone, and the dust is purified a second time by the centrifugal force of the dust. The dust removal device of this utility model is small in size, simple and reasonable in structure, and has high dust removal efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation of this utility model on a road maintenance vehicle;

[0018] Figure 2 This is an isometric schematic diagram of the present invention;

[0019] Figure 3 This is an isometric schematic diagram of the Chinese-language tube of this utility model;

[0020] Figure 4 This is a cross-sectional view of the cyclone dust collector in this utility model;

[0021] Figure 5 This is an isometric schematic diagram of the water tank in this utility model;

[0022] Figure 6 This is a schematic diagram illustrating the principle of dust-laden gas purification according to this utility model. Detailed Implementation

[0023] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1-2 As shown, a Venturi cyclone dust removal device for a road maintenance vehicle includes a Venturi cyclone dust removal device body installed on the platform of the road maintenance vehicle. The Venturi cyclone dust removal device body consists of an air suction pipe 1, a Venturi pipe 2, a cyclone dust collector 3, a dust removal fan 4, a chimney 5, and a water tank 6. The dust removal fan 4 is installed at the upper end of the cyclone dust collector 3. One side of the dust removal fan 4 is connected to one end of the air suction pipe 1 through the Venturi pipe 2. The other end of the air suction pipe 1 is welded to the air outlet of the mixing pot. A chimney 5 is installed at the air outlet of the dust removal fan 4. The lower end of the cyclone dust collector 3 is fixed to an opening on the upper surface of the water tank 6 by a flange. The lower surface of the water tank 6 is fixed to the platform in the middle of the road maintenance vehicle by bolts. A water spray pipe 7 is installed on the side of the water tank 6.

[0026] like Figure 3 As shown, the Venturi tube 2 consists of an inlet cylindrical tube 21, a conical converging tube 22, a cylindrical throat 23, a conical diffuser 24, an outlet cylindrical tube 25, and at least one nozzle holder 26. The inlet cylindrical tube 21, the conical converging tube 22, the cylindrical throat 23, the conical diffuser 24, and the outlet cylindrical tube 25 are sequentially connected and assembled to form the tube body of the Venturi tube. A nozzle holder 26 is welded to the side of the conical converging tube 22 and the conical diffuser 24, and a U-shaped handle 27 is also provided on the side of the conical diffuser 24 for convenient installation and debugging.

[0027] The water spray pipeline 7 consists of a circulation pipe 71, a filter 72, a water pump 73, and nozzles 74. The water pump 73 and the filter 72 are installed sequentially on the circulation pipe 71. At least one nozzle 74 is provided on the end of the circulation pipe 71 near the venturi tube 2. Each nozzle 74 is connected to the nozzle fixing seat 26 provided on the venturi tube 2 by a thread. The other end of the circulation pipe 71 is connected to the side of the water tank 6.

[0028] like Figure 4As shown, the cyclone dust collector 3 is composed of a spiral cylindrical body 32, a conical cylindrical body 34, a dust suction pipe 31, and an air outlet pipe 33. The spiral cylindrical body 32 and the conical cylindrical body 34 are welded together to form the outer shell of the cyclone dust collector 3. An air outlet pipe 33 is embedded and welded in the middle of the top of the spiral cylindrical body 32. A dust collector fan 4 is installed on the upper part of the air outlet pipe 33. A dust suction pipe 31 is also installed on the side of the spiral cylindrical body 32. The dust suction pipe 31 is connected to the air suction pipe 1.

[0029] like Figure 5 As shown, the water tank 6 consists of a tank body 61, an inspection port cover 62, and a valve 63. The tank body 61 has a cuboid structure. A circular opening 64 and a rectangular opening 65 are respectively provided on the upper surface of the tank body 61. A circular flange 66 and a rectangular flange 67 are welded to the circular opening 64 and the rectangular opening 65, respectively. The circular flange 66 and the rectangular flange 67 are respectively connected to the bottom of the cyclone dust collector 3 and the inspection port cover 62. A water inlet pipe 68 and a drain pipe 69 are respectively provided on the upper and lower surfaces of the tank body 61. A water suction pipe 80 and an overflow pipe 81 with a valve 63 are respectively provided on the side of the tank body 61. The vertical height of the overflow pipe 81 is higher than that of the water suction pipe 80. The water suction pipe 80 is installed at the water suction port provided on the side of the water tank 6 and is connected to the end of the circulation pipe 71.

[0030] The suction port pipe 31 is a rectangular channel formed by welding four steel plates together. A circular flange is welded to the head of the rectangular channel and is bolted to the outlet flange of the Venturi tube 2. The tail of the suction port pipe 31 is welded to the upper side of the spiral cylindrical body 32. The spiral cylindrical body 32 is a cylindrical body formed by rolling steel plates, with a spiral steel plate welded to the top. The air outlet pipe 33 is formed by welding a section of circular steel pipe and a flange. The circular steel pipe is inserted into the central circular hole formed by the spiral steel plate on the upper part of the spiral cylindrical body 32 and is fixed by welding. The upper part of the conical cylinder 34 is fixed to the lower part of the spiral cylindrical body 32 by welding, and a connecting flange is vertically welded to the lower part of the conical cylinder 34. It is bolted to the upper part of the water tank 6.

[0031] The suction pipe 1 consists of a straight pipe 11 and a 90° bend pipe 12. The straight pipe 11 is connected to the suction port pipe 31 of the cyclone dust collector 3. The 90° bend pipe 12 is installed at the end of the straight pipe 11 away from the cyclone dust collector 3 via a flange, and its outlet 13 faces downwards and is welded to the air outlet of the mixing pot. The conical cylinder 34 is an inverted conical cylinder that is larger at the top and smaller at the bottom. The suction port pipe 31 is a rectangular channel formed by welding four steel plates together. The chimney 5 is welded together from five irregularly shaped steel plates and a flange. The dust removal fan 4 is a centrifugal fan driven by a hydraulic motor.

[0032] The working principle of this utility model is as follows:

[0033] Since one end of the suction pipe 1 is connected to the air outlet on the top cover of the mixing pot, when the road maintenance vehicle starts working, the dust removal fan 4 starts running, and the water pump 73 starts working at the same time. The water pump 73 is connected to the water inlet of the water tank 6 through the circulation pipe 71. Water passes through the filter 72 and the water pump 73 and is sprayed into the venturi tube 2 from the nozzle 74. At this time, the dust-laden gas enters the contraction tube 22, and the flow velocity gradually increases along the tube. The sprayed water is atomized by the impact of the high-speed airflow. The dust particles in the gas come into contact with the liquid droplets and are lubricated. After entering the diffuser tube 24, the flow velocity gradually decreases, and the dust particles stick together, making the particles larger and easier to remove. Finally, it enters the cyclone dust collector 3. Due to the centrifugal force, the water and lubricated dust particles are thrown onto the inner wall of the cyclone dust collector 3 and flow downward into the water tank 6. The purified gas is discharged into the atmosphere through the air outlet pipe 33, the dust removal fan 4, and the chimney 5, completing the dust removal work. The overall dust-laden gas purification principle of this utility model is as follows. Figure 6 As shown.

[0034] After the road maintenance vehicle has completed all its work, the user can open the drain valve 63 (usually a ball valve) at the bottom of the water tank 61 of the dust collector to drain the wastewater, and then open the water inlet cover at the top of the water tank 61 of the dust collector to add clean water in order to maintain the dust collector's high dust removal efficiency.

[0035] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A Venturi cyclone dust collector for a road maintenance vehicle, comprising a Venturi cyclone dust collector body mounted on a platform in the road maintenance vehicle, characterized in that: The Venturi cyclone dust collector consists of a suction pipe (1), a Venturi pipe (2), a cyclone dust collector (3), a dust collector fan (4), a chimney (5), and a water tank (6). A dust collector fan (4) is installed at the upper end of the cyclone dust collector (3). One side of the dust collector fan (4) is connected to one end of the suction pipe (1) through the Venturi pipe (2). The other end of the suction pipe (1) is welded to the air outlet of the mixing pot. A chimney (5) is installed at the air outlet of the dust collector fan (4). The lower end of the cyclone dust collector (3) is fixed to the opening on the upper surface of the water tank (6) through a flange. The lower surface of the water tank (6) is fixed to the middle platform of the road maintenance vehicle by bolts. A water spray pipe (7) is installed on the side of the water tank (6).

2. The Venturi cyclone dust collector for road maintenance vehicles according to claim 1, characterized in that: The Venturi tube (2) consists of an inlet cylindrical tube (21), a conical converging tube (22), a cylindrical throat (23), a conical diffuser (24), an outlet cylindrical tube (25), and at least one nozzle holder (26). The inlet cylindrical tube (21), the conical converging tube (22), the cylindrical throat (23), the conical diffuser (24), and the outlet cylindrical tube (25) are connected and assembled in sequence to form the tube body of the Venturi tube. A nozzle holder (26) is welded to the side of the conical converging tube (22) and the conical diffuser (24), and a U-shaped handle (27) is also provided on the side of the conical diffuser (24) for easy installation and debugging.

3. The Venturi cyclone dust collector for road maintenance vehicles according to claim 1 or 2, characterized in that: The water spray pipeline (7) consists of a circulation pipe (71), a filter (72), a water pump (73), and a nozzle (74). The water pump (73) and the filter (72) are installed sequentially on the circulation pipe (71). At least one nozzle (74) is provided on the end of the circulation pipe (71) near the Venturi tube (2). Each nozzle (74) is connected to the nozzle fixing seat (26) provided on the Venturi tube (2) by a thread. The other end of the circulation pipe (71) is connected to the side of the water tank (6).

4. The Venturi cyclone dust collector for road maintenance vehicles according to claim 3, characterized in that: The water tank (6) consists of a tank body (61), an inspection port cover (62), and a valve (63). The tank body (61) has a rectangular parallelepiped structure. A circular opening (64) and a rectangular opening (65) are respectively provided on the upper surface of the tank body (61). A circular flange (66) and a rectangular flange (67) are respectively welded to the circular opening (64) and the rectangular opening (65). The circular flange (66) and the rectangular flange (67) are respectively connected to the bottom of the cyclone dust collector (3). And connected to the inspection port cover (62), a water inlet pipe (68) and a drain pipe (69) are respectively provided on the upper and lower surfaces of the water tank (61), and a water inlet pipe (80) and an overflow pipe (81) with a valve (63) are respectively provided on the side of the water tank (61). The vertical height of the overflow pipe (81) is higher than that of the water inlet pipe (80). The water inlet pipe (80) is installed on the side of the water tank (6) and connected to the end of the circulation pipe (71).

5. The Venturi cyclone dust collector for road maintenance vehicles according to claim 4, characterized in that: The cyclone dust collector (3) is composed of a spiral cylindrical body (32), a conical cylindrical body (34), a dust suction pipe (31), and an air outlet pipe (33). The spiral cylindrical body (32) and the conical cylindrical body (34) are welded together to form the outer shell of the cyclone dust collector (3). An air outlet pipe (33) is embedded and welded in the middle of the top of the spiral cylindrical body (32). A dust removal fan (4) is installed on the upper part of the air outlet pipe (33). A dust suction pipe (31) is also installed on the side of the spiral cylindrical body (32). The dust suction pipe (31) is connected to the air suction pipe (1).

6. The Venturi cyclone dust collector for road maintenance vehicles according to claim 5, characterized in that: The suction port pipe (31) is a rectangular channel formed by welding four steel plates. A circular flange is welded to the head of the rectangular channel and is bolted to the outlet flange of the Venturi tube (2). The tail of the suction port pipe (31) is welded to the upper side of the spiral cylindrical body (32). The spiral cylindrical body (32) is a cylindrical body formed by rolling steel plates. A spiral steel plate is welded to the top. The air outlet pipe (33) is formed by welding a section of circular steel pipe and a flange. The circular steel pipe is inserted into the central circular hole formed by the spiral steel plate at the top of the spiral cylindrical body (32) and is fixed by welding. The upper part of the conical cylinder (34) is fixed to the lower part of the spiral cylindrical body (32) by welding. A connecting flange is vertically welded to the lower part of the conical cylinder (34). It is fixed to the upper part of the water tank (6) by bolting.

7. The Venturi cyclone dust collector for road maintenance vehicles according to claim 5, characterized in that: The suction pipe (1) consists of a straight pipe (11) and a 90° elbow pipe (12). The straight pipe (11) is connected to the suction port pipe (31) of the cyclone dust collector (3). The 90° elbow pipe (12) is installed at the end of the straight pipe (11) away from the cyclone dust collector (3) through a flange. The outlet (13) of the 90° elbow pipe (12) is welded downward to the air outlet of the mixing pot.

8. The Venturi cyclone dust collector for road maintenance vehicles according to claim 5, characterized in that: The conical cylinder (34) is an inverted conical cylinder that is larger at the top and smaller at the bottom.

9. The Venturi cyclone dust collector for road maintenance vehicles according to claim 7, characterized in that: The suction port (31) is a rectangular channel formed by welding four steel plates together.

10. The Venturi cyclone dust collector for a road maintenance vehicle according to claim 1 or 9, characterized in that: The chimney (5) is welded together from five irregular steel plates and a flange, and the dust removal fan (4) is a centrifugal fan driven by a hydraulic motor.

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