Dust removal device for dry-type sprayed concrete

Abstract

The utility model discloses a dust removal device for dry-type shotcrete, which is characterized in that a dust cover with an opening on one side is surrounded outside a dry-type shotcrete machine main body, a hopper penetrates through the dust cover and extends to the outside of the dust cover, and the discharge directions of an exhaust port and a dust discharge port on the dry-type shotcrete machine main body point to the inside of the opening area. A plurality of micro spray heads are arranged at the edge of the opening and are communicated with an external water source, and the water spraying directions of the micro spray heads point to the interior of the opening area. The dustproof cover is arranged outside the dry-type injection machine body, the dry-type injection machine body can be surrounded inside the dustproof cover, the miniature spray head is arranged on the opening opposite to the exhaust port and the dust discharge port, and dust sprayed out of the exhaust port and the dust discharge port is limited to fly to the opening. Water mist sprayed out of the micro spray head forms a water curtain which can prevent dust from drifting to the external environment and wet the dust so that the dust can be rapidly settled, and dust pollution of the exhaust port and the dust exhaust port to the external environment is effectively reduced.

Description

Technical Field

[0001] The utility model relates to building construction equipment, in particular to a dust removal device used for dry shotcrete. Background Art

[0002] Dry concrete spraying machine is a kind of equipment used for concrete construction, mainly used in the construction of various tunnels, large underground projects, retaining walls and other projects. Dry concrete spraying machine sprays concrete, cement, sand and other materials at high speed onto the construction surface, accelerating the solidification to form a solid wall or supporting structure. Dry concrete spraying is widely used due to its long transportation distance, economical, simple and durable equipment and other characteristics.

[0003] The dry concrete spraying machine is mainly composed of a rotor body, a hopper, an air duct, a cyclone and an electric meter box, and needs to be connected to an air compressor when in use. Among them, an exhaust port and a dust exhaust port are usually provided on one side of the spraying machine, and the excess air inside the machine body can be taken out from the exhaust port to avoid equipment failure caused by excessive pressure inside the machine body. At the same time, under the action of wind pressure, the dust exhaust hole can discharge the excess concrete powder that cannot enter the output pipe. However, with the current structural method, the powder discharged from the dust exhaust hole and the powder carried by the exhaust gas will be directly discharged into the external environment, which will cause serious dust pollution to the construction environment and will also affect the health of surrounding construction workers. Utility Model Content

[0004] The utility model aims to provide a dust removal device for dry shotcrete to solve the problem of dust pollution at the air outlet and dust outlet of the dry concrete spraying machine in the prior art.

[0005] The utility model provides a dust removal device for dry shotcrete. The outside of the dry shotcrete main body is surrounded by a dust cover with an open opening on one side. The hopper penetrates the dust cover and extends to the outside of the dust cover. The exhaust port and the dust exhaust port on the dry shotcrete main body are directed to the open area. A plurality of micro-sprinklers are arranged at the edge of the open opening. The micro-sprinklers are connected to an external water source and the water spraying direction of the micro-sprinklers is directed to the open area.

[0006] Furthermore, the dust cover includes two side baffles arranged on opposite sides of the dry jet machine body, the rear end faces of the two side baffles are commonly connected to the rear baffle, the upper end faces of the side baffles and the rear baffles are commonly connected to the upper baffle to form a one-piece structure with an open front side and a closed periphery, and the side baffles, the rear baffle and the upper baffle are connected to each other by railing buckles.

[0007] Furthermore, the side baffles, the rear baffles and the upper baffles are all composed of a plastic-steel frame and a plastic-steel glass plate connected within the frame area of ​​the plastic-steel frame.

[0008] Furthermore, a fixing frame is connected to the edge of the opening, the fixing frame covers the front end surfaces of the side baffle and the upper baffle, and the inner peripheral surface of the fixing frame is flush with the inner edge of the opening.

[0009] Furthermore, a top pipe and a side pipe are respectively arranged at the upper edge and the side edge of the open mouth. The length direction of the top pipe is horizontally arranged along the extension direction of the front end surface of the upper baffle, and the length direction of the side pipe is vertically arranged along the extension direction of the front end surface of the side baffle. The micro-sprinklers are connected to the top pipe and the side pipes, and the direction of the micro-sprinklers on the top pipe is arranged at an angle to the direction of the micro-sprinklers on the side pipe.

[0010] Furthermore, a mud and water collector with an opening on the top is arranged between the opposite sides of the two side baffles, the mud and water collector is located at the bottom end of the opening, the micro nozzle is located above the mud and water collector, and a drainage outlet connected to the interior of the mud and water collector is arranged on the front end surface of the mud and water collector, and the mud and water collector is arranged in a gap adjacent to the side baffle.

[0011] Furthermore, a slide groove parallel to the plate surface of the side baffle and located in the horizontal direction is arranged on the outer side surface of the mud and water collector adjacent to the side baffle, and a bolt column is connected at the edge of the opening, and the column core direction of the bolt column is located in the horizontal direction perpendicular to the long direction of the slide groove. One end of the bolt column adjacent to the mud and water collector is pressed into the interior of the slide groove and forms a dynamic connection with the inner wall of the slide groove. The distance between the outer end surfaces of the front and rear sides of the mud and water collector is less than or equal to the distance between the upper and lower inner edges of the opening.

[0012] Furthermore, a through opening for the hopper to pass through is reserved on the plastic-steel glass plate on the upper baffle, and a sealing strip is arranged between the edge of the through opening and the hopper body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a dust cover on the outside of the dry spray machine body, so that the dry spray machine body can be surrounded by the dust cover, and a micro-spray head is provided on the open opening opposite to the exhaust port and the dust exhaust port, so that the dust sprayed from the exhaust port and the dust exhaust port is restricted from floating toward the open opening, and the water mist sprayed from the micro-spray head forms a water curtain to block the dust from floating into the external environment and wet the dust so that the dust settles quickly, thereby effectively reducing the dust pollution of the exhaust port and the dust exhaust port to the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a rear view of the utility model;

[0017] Figure 3 It is a left view of the utility model;

[0018] Figure 4 It is a schematic diagram of the mud and water collector flipping;

[0019] Figure 5 It is a schematic diagram of the structure of the side baffle, rear baffle and upper baffle.

[0020] Explanation of the reference numerals: 10. dust cover; 11. side baffle; 12. rear baffle; 13. upper baffle; 14. fixing frame; 20. dry jet machine body; 21. hopper; 22. cyclone; 30. top pipe; 31. micro nozzle; 32. water inlet; 33. side pipe; 40. mud and water collector; 41. drain outlet; 42. chute; 43. bolt; 50. plastic steel frame; 51. plastic steel glass plate; 60. railing buckle. DETAILED DESCRIPTION

[0021] The utility model will be described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-5 As shown, the utility model provides a dust removal device for dry shotcrete, the outside of the dry shotcrete main body 20 is surrounded by a dust cover 10 with an open side, the hopper 21 penetrates the dust cover 10 and extends to the outside of the dust cover 10, the exhaust port or dust exhaust port on the dry shotcrete main body 20 is directed to the open area, a plurality of micro nozzles 31 are arranged at the edge of the open mouth, the micro nozzles 31 are connected to an external water source and the water spraying direction of the micro nozzles 31 is directed to the open area.

[0023] It should be noted that, in order to save materials and not hinder the mechanical operation, the distance between the dust cover 10 and the protruding part of the dry spray machine body 20 is preferably 50 to 100 mm.

[0024] In the above scheme, by arranging the dust cover 10 outside the dry spray machine body 20, the dry spray machine body 20 can be surrounded by the dust cover 10 and connected to the exhaust port and the dust exhaust port (such as Figure 1 A micro nozzle 31 is arranged on the opening relative to the position indicated by A in the figure, and the dust sprayed from the exhaust port and the dust outlet is restricted from floating toward the opening. The water mist sprayed by the micro nozzle 31 forms a water curtain to block the dust from floating from the inside of the dust cover 10 to the external environment and wet the dust so that the dust settles quickly, effectively reducing the dust pollution of the exhaust port and the dust outlet to the external environment. In this scheme, the exhaust of the machine is not affected, but the diffused dust is concentrated in a similar closed space, thereby achieving the effect of effective dust removal without affecting the normal operation of the machine and the health of the machine operator.

[0025] As a preferred solution, the dust cover 10 includes two side baffles 11 arranged on opposite sides of the dry spray machine body 20, the rear end faces of the two side baffles 11 are connected to the rear baffle 12, and the upper end faces of the side baffles 11 and the rear baffle 12 are connected to the upper baffle 13 to form a one-piece structure with an open front side and a closed periphery. The side baffles 11, the rear baffle 12, and the upper baffle 13 are connected to each other through the fence buckle 60. The fence buckle 60 connection design not only meets the convenience of assembly, disassembly, transportation, and storage, but also avoids the situation where individual small parts are easily lost at the construction site. Through the isolation of the side baffles 11, the rear baffle 12, and the upper baffle 13, the dust discharged from the exhaust port and the dust outlet of the dry spray machine body 20 can be restricted from floating outward through the open port, while the micro nozzle 31 centrally processes the dust to prevent the dust discharged from the exhaust port and the dust outlet from being discharged from other sides of the dry spray machine body 20.

[0026] Furthermore, the side baffles 11 , the rear baffles 12 , and the upper baffles 13 are all composed of a plastic-steel frame 50 and a plastic-steel glass plate 51 connected within the frame area of ​​the plastic-steel frame 50 .

[0027] The edge of the opening is connected with a fixing frame 14, which covers the front end surfaces of the side baffles 11 and the upper baffle 13, and the inner circumference of the fixing frame 14 is flush with the inner edge of the opening. The fixing frame 14 can reinforce the front end connection stability of the side baffles 11 and the upper baffle 13, and enhance the overall structural stability of the dust cover 10.

[0028] As a preferred solution, a top pipe 30 and a side pipe 33 are respectively arranged at the upper edge and the side edge of the opening. The length direction of the top pipe 30 is arranged horizontally along the extension direction of the front end surface of the upper baffle 13, and the length direction of the side pipe 33 is arranged vertically along the extension direction of the front end surface of the side baffle 11. The micro-sprinkler 31 is connected to the top pipe 30 and the side pipe 33, and the direction of the micro-sprinkler 31 on the top pipe 30 is arranged at an angle to the direction of the micro-sprinkler 31 on the side pipe 33. When spraying water, the micro-sprinklers 31 on the top pipe 30 and the side pipe 33 can form a cross water curtain, which effectively ensures the comprehensive coverage of the water curtain on the open area and improves the dust blocking effect. In this solution, the top pipe 30 and the side pipe 33 are connected to each other and a water inlet 32 ​​can be set on both.

[0029] Combination Figure 1 , 3As shown in 4, considering that the water sprayed by the micro nozzle 31 and the dust form muddy water flowing naturally, which may affect the construction environment, a muddy water collector 40 with an opening on the top is arranged between the opposite sides of the two side baffles 11. The muddy water collector 40 is located at the bottom end of the opening, and the micro nozzle 31 is located above the muddy water collector 40. The front end surface of the muddy water collector 40 is arranged with a drain port 41 connected to the inside thereof. The muddy water collector 40 and the side baffle 11 are arranged near the gap. The muddy water formed by the water sprayed by the micro nozzle 31 and the dust can naturally flow into the muddy water collector 40, and the muddy water collector 40 can collect the muddy water in a centralized manner, and further discharge it through the drain port 41.

[0030] As a preferred solution, the outer side surface of the mud and water collector 40 near the side baffle 11 is arranged with a slide 42 which is parallel to the plate surface of the side baffle 11 and located in the horizontal direction, and a bolt 43 is connected to the edge of the opening, and the column core direction of the bolt 43 is located in the horizontal direction perpendicular to the length direction of the slide 42. One end of the bolt 43 near the mud and water collector 40 is pressed into the inside of the slide 42 and forms a dynamic connection with the inner wall of the slide 42. The distance between the outer end surfaces of the front and rear sides of the mud and water collector 40 is less than or equal to the distance between the upper and lower inner edges of the opening. Through the sliding guide cooperation of the slide 42 and the bolt 43, according to the spray width, the relative position of the mud and water collector 40 in the opening can be adjusted by pulling the mud and water collector 40 to completely collect mud and water. In addition, when the equipment is not in use, the mud and water collector 40 can be pulled out from the opening and flipped over using the bolt 43 as an axis, so that the mud and water collector 40 can be placed upright as a whole and embedded in the opening area to seal and protect the opening.

[0031] As a preferred solution, a through hole for the hopper 21 to pass through is reserved on the plastic steel glass plate 51 on the upper baffle 13, and a sealing strip is arranged between the edge of the through hole and the body of the hopper 21. The sealing strip can seal the through hole and the body of the hopper 21 to prevent dust inside the dust cover 10 from escaping from the through hole in large quantities and affecting the external environment. The access end of the cyclone 22 is also sealed as described above.

Claims

1. A dust removal device for dry shotcrete, characterized in that: The outside of the dry spray machine body (20) is surrounded by a dust cover (10) with an open opening on one side, the hopper (21) penetrates the dust cover (10) and extends to the outside of the dust cover (10), the exhaust port or dust exhaust port on the dry spray machine body (20) is directed toward the open area, and a plurality of micro nozzles (31) are arranged at the edge of the open area, the micro nozzles (31) are connected to an external water source, and the water spraying direction of the micro nozzles (31) is directed toward the open area.

2. A dust removal device for dry shotcrete according to claim 1, characterized in that: The dust cover (10) comprises two side baffles (11) arranged on opposite sides of the dry jet machine body (20); the rear end surfaces of the two side baffles (11) are commonly connected to a rear baffle (12); the upper end surfaces of the side baffles (11) and the rear baffle (12) are commonly connected to an upper baffle (13) to form a one-piece structure with an open front side and a closed periphery; the side baffles (11), the rear baffle (12) and the upper baffle (13) are connected to each other via a baffle buckle (60).

3. A dust removal device for dry shotcrete according to claim 2, characterized in that: The side baffles (11), the rear baffle (12), and the upper baffle (13) are all composed of a plastic-steel frame (50) and a plastic-steel glass plate (51) connected within the frame area of ​​the plastic-steel frame (50).

4. A dust removal device for dry shotcrete according to claim 2, characterized in that: A fixing frame (14) is connected to the edge of the opening. The fixing frame (14) covers the front end surfaces of the side baffle (11) and the upper baffle (13). The inner peripheral surface of the fixing frame (14) is flush with the inner edge of the opening.

5. A dust removal device for dry shotcrete according to claim 1, characterized in that: A top pipe (30) and a side pipe (33) are disposed at the upper edge and the side edge of the opening, respectively. The top pipe (30) is arranged transversely along the extension direction of the front end surface of the upper baffle (13), and the side pipe (33) is arranged vertically along the extension direction of the front end surface of the side baffle (11). The micro-sprinkler (31) is connected to the top pipe (30) and the side pipe (33), and the direction of the micro-sprinkler (31) on the top pipe (30) is arranged at an angle to the direction of the micro-sprinkler (31) on the side pipe (33).

6. A dust removal device for dry shotcrete according to claim 4, characterized in that: A muddy water collector (40) having an opening at the top is arranged between the opposite sides of the two side baffles (11); the muddy water collector (40) is located at the bottom end of the opening; the micro nozzle (31) is located above the muddy water collector (40); a drainage port (41) connected to the interior of the muddy water collector (40) is arranged on the front end surface of the muddy water collector (40); and the muddy water collector (40) and the side baffle (11) are arranged adjacent to the gap.

7. A dust removal device for dry shotcrete according to claim 6, characterized in that: The outer side surface of the mud and water collector (40) adjacent to the side baffle (11) is provided with a slide groove (42) which is parallel to the plate surface of the side baffle (11) and located in the horizontal direction. A bolt column (43) is connected to the edge of the opening. The column core direction of the bolt column (43) is located in the horizontal direction perpendicular to the groove length direction of the slide groove (42). One end of the bolt column (43) adjacent to the mud and water collector (40) is pressed into the inside of the slide groove (42) and is dynamically connected to the inner wall of the slide groove (42). The distance between the outer end surfaces of the front and rear sides of the mud and water collector (40) is less than or equal to the distance between the upper and lower inner edges of the opening.

8. A dust removal device for dry shotcrete according to claim 3, characterized in that: A through opening for the hopper (21) to pass through is reserved on the plastic steel glass plate (51) on the upper baffle plate (13), and a sealing strip is arranged between the edge of the through opening and the body of the hopper (21).

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