Spraying and dust settling device for bucket wheel machine
By designing a multi-point spray dust suppression device on the bucket wheel excavator, the problem of blind spots in dust suppression range during the stacking and unloading processes of the bucket wheel excavator was solved, achieving effective dust suppression at all times and continuous operation in low-temperature environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-04-07
AI Technical Summary
Existing technologies have blind spots in the dust suppression range of water mist during the stacking and reclaiming processes of bucket wheel excavators, resulting in insignificant effects and difficulty in continuous operation in low-temperature environments.
A dust suppression spraying device was designed, comprising an air compressor, an air tank, a water tank, a micro-mist main unit, compressed air and water pipelines, micro-mist pipelines, and atomizing spray components. It achieves multi-point and multi-area spray coverage and, combined with a nozzle antifreeze device, ensures normal operation in low-temperature environments.
It achieves effective dust suppression of bucket wheel excavators at all times, covers dust reduction at moving points, ensures continuous operation in low-temperature winter environments, and improves dust suppression effect and equipment applicability.
Smart Images
Figure CN224086355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust suppression technology, and in particular to a spray dust suppression device for bucket wheel excavators. Background Technology
[0002] With increasingly stringent environmental regulations and intensified efforts to control dust pollution, the dust-generating points at the North Plant of the Thermal Power Branch are constantly changing as the bucket wheel excavator moves during the coal stacking and unloading process. Previously, the only method to suppress dust was to spray water mist from mist cannons at these points. However, the dust suppression range of the water mist has many blind spots, and the effect is not significant. Utility Model Content
[0003] Based on the above problems, the purpose of this utility model is to provide a spray dust suppression device for bucket wheel excavators. The technical solution adopted by this utility model is as follows:
[0004] This utility model provides a spray dust suppression device for bucket wheel excavators, including an air compressor, an air tank, a first compressed air pipeline, a water tank, a micro-mist main unit, a first water pipeline, a micro-mist pipeline, and several atomizing spray components;
[0005] The air compressor is connected to the air storage tank through the first compressed air pipeline, and the air storage tank is connected to the air inlet of the micro-mist host through the first compressed air pipeline.
[0006] The water tank is connected to the water inlet of the micro-mist host through a first water pipe, and a booster pump is installed on the first water pipe.
[0007] The micro-mist outlet of the micro-mist host is connected to each of the atomizing spray components through the micro-mist pipeline, and each of the atomizing spray components is set at a different position on the bucket wheel machine.
[0008] Preferably, the atomizing spray assembly includes a water vapor synthesis box, an atomizing integration box, and atomizing nozzles; the micro-mist outlet of the micro-mist host is connected to the water vapor inlet of the water vapor synthesis box through the micro-mist pipeline, the water vapor outlet of the water vapor synthesis box is connected to the inlet of the atomizing integration box through the water vapor pipeline, the atomizing integration box is connected to a plurality of atomizing nozzles through a spray pipeline, and the atomizing nozzles spray water mist.
[0009] Preferably, the first compressed air pipeline is connected to the air inlet of the water-air synthesis box via a second compressed air pipeline.
[0010] Preferably, the device further includes a nozzle antifreeze device, which includes a thrust sleeve connected to the spray pipe. A movable thrust plate is disposed inside the thrust sleeve. A central hole is formed on the thrust plate. A thrust tube is connected to the thrust plate at a position corresponding to the central hole. The thrust tube passes through a nozzle hole on the outer end plate of the thrust sleeve and connects to an atomizing nozzle. A return spring is fitted onto the thrust tube, with one end abutting against the thrust plate and the other end abutting against the outer end plate of the thrust sleeve.
[0011] The atomizing nozzle and thrust sleeve are fitted with an insulating sleeve. The inner end of the insulating sleeve is connected to the spray pipeline through a connector. The outer sealing plate of the insulating sleeve has a circular hole, and a baffle is provided outside the circular hole. The baffle is rotatably connected to the outer sealing plate of the insulating sleeve through a rotating shaft. The rotating shaft is eccentrically arranged and driven by an opening and closing mechanism.
[0012] Preferably, a sealing ring is installed on the outer circumferential surface of the thrust plate.
[0013] Preferably, the opening and closing mechanism includes a swing arm, a connecting rod, a wedge, and a guide rod; the swing arm is vertically installed on the inner end of the rotating shaft, the end of the swing arm away from the rotating shaft is connected to the connecting rod, the inner end of the connecting rod engages with the inclined surface of the wedge, the wedge is installed on the guide rod, the guide rod is radially installed on the thrust tube, and the inner wall of the insulation sleeve is provided with an axial guide groove, the guide rod engaging with the guide groove.
[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0015] This invention utilizes multi-point, multi-area water mist dust suppression coverage to achieve continuous dust suppression during the operation of the bucket wheel excavator; at the same time, it is designed with a residual water backflushing system to ensure continuous operation in low-temperature winter environments. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a schematic diagram of the structure of the spray dust suppression device for bucket wheel excavators according to this utility model;
[0018] Figure 2 This is a top view of the antifreeze device for the nozzle of this utility model.
[0019] Figure 3 This is a schematic diagram of the main structure of the wedge block and connecting rod of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Air compressor; 2. Air tank; 3. First compressed air pipeline; 4. Second compressed air pipeline; 5. Water tank; 6. Micro-mist main unit; 7. First water pipeline; 8. Micro-mist pipeline; 9. Atomizing spray assembly; 901. Water-air synthesis box; 902. Atomizing integration box; 903. Atomizing nozzle; 904. Spray pipeline; 10. Nozzle antifreeze device; 1001. Thrust sleeve; 1002. Thrust plate; 1003. Center hole; 1004. Thrust tube; 1005. Return spring; 1006. Insulation sleeve; 1007. Connector; 1008. Round hole; 1009. Baffle; 1010. Rotating shaft; 11. Opening and closing mechanism; 1101. Swing arm; 1102. Connecting rod; 1103. Wedge; 1104. Guide rod; Detailed Implementation
[0021] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0022] like Figure 1 As shown in the figure, this embodiment discloses a spray dust suppression device for a bucket wheel excavator, characterized in that it includes an air compressor 1, an air storage tank 2, a first compressed air pipeline 3, a water tank 5, a micro-mist host 6, a first water pipeline 7, a micro-mist pipeline 8, and several atomizing spray components 9; wherein, each atomizing spray component 9 is set at a different position on the bucket wheel excavator, and can be installed at the tail car head hopper, the cantilever head guide chute, the drop buffer hopper, the bucket wheel excavator and belt conveyor guide chute, the wheel bucket picking point, the tail of the cantilever belt, the throwing point below the head of the cantilever belt, etc.
[0023] Among them, the air compressor 1 is connected to the air storage tank 2 through the first compressed air pipeline 3, and the air storage tank 2 is connected to the air inlet of the micro-mist host 6 through the first compressed air pipeline 3; the water tank 5 is connected to the water inlet of the micro-mist host 6 through the first water pipeline 7, and a booster pump is installed on the first water pipeline 7; the micro-mist outlet of the micro-mist host 6 is connected to each atomizing spray component 9 through the micro-mist pipeline 8.
[0024] The atomizing spray assembly 9 includes a water vapor synthesis box 901, an atomizing integration box 902, and atomizing nozzles 903. The micro-mist outlet of the micro-mist host 6 is connected to the water vapor inlet of the water vapor synthesis box 901 via a micro-mist pipe 8. The water vapor outlet of the water vapor synthesis box 901 is connected to the inlet of the atomizing integration box 902 via a water vapor pipe. The atomizing integration box 902 is connected to several atomizing nozzles 903 via a spray pipe 904, and the atomizing nozzles 903 spray water mist. The water vapor synthesis box 90 is an atomizer, which uses existing technology and will not be described in detail here.
[0025] The first compressed air pipeline 3 is connected to the air inlet of the water-gas synthesis box 901 via the second compressed air pipeline 4. After the atomizing spray assembly 9 sprays to suppress dust, and the bucket wheel excavator stops, the compressed air in the air storage tank 2 enters the water-gas synthesis box 901 through the first compressed air pipeline 3 and the second compressed air pipeline 4. The compressed air discharges the water vapor in the water-gas synthesis box 901 through the atomizing integrated box 902 and the atomizing nozzle 903, preventing the water in the water-gas synthesis box 901 and the atomizing integrated box 902 from freezing. In addition, the water tank 5 is covered with an insulation layer.
[0026] Each atomizing spray assembly 9 is equipped with a micro-mist controller on its micro-mist pipeline 8 to adjust the spray volume according to dust levels, thus saving water. The micro-mist controller uses a flow regulating valve to adjust the flow rate, which is existing technology and will not be described further. The angle of the atomizing nozzle 903 is adjustable to achieve the best dust suppression effect. The atomizing nozzle 903 is an atomizing nozzle that uses a ball head and ball seat assembly for adjustment. The ball head and ball seat assembly is existing technology and will not be described further.
[0027] like Figure 2 and 3 As shown, this embodiment also includes a nozzle antifreeze device 10, which ensures the normal use of the atomizing nozzle 903 in winter. Figure 3 As shown, the nozzle antifreeze device 10 includes a thrust sleeve 1001 connected to the spray pipe 904. A movable thrust plate 1002 is disposed inside the thrust sleeve 1001, and a sealing ring is installed on the outer circumferential surface of the thrust plate 1002. A central hole 1003 is formed on the thrust plate 1002. A thrust tube 1004 is connected to the thrust plate 1002 at a position corresponding to the central hole 1003. The thrust tube 1004 passes through a nozzle hole on the outer end plate of the thrust sleeve 1001 and connects to the atomizing nozzle 903. A return spring 1005 is fitted on the thrust tube 1004. One end of the return spring 1005 abuts against the thrust plate 1002, and the other end abuts against the outer end plate of the thrust sleeve 1001.
[0028] The atomizing nozzle 903 and the thrust sleeve 1001 are fitted with an insulation sleeve 1006. The inner end of the insulation sleeve 1006 is connected to the spray pipe 904 through a connector 1007. The outer sealing plate of the insulation sleeve 1006 has a round hole 1008. A baffle 1009 is provided outside the round hole 1008. The baffle 1009 is rotatably connected to the outer sealing plate of the insulation sleeve 1006 through a rotating shaft 1010. The rotating shaft 1010 is eccentrically arranged and is driven by the opening and closing mechanism 11.
[0029] The opening and closing mechanism 11 includes a swing arm 1101, a connecting rod 1102, a wedge 1103, and a guide rod 1104. The swing arm 1101 is vertically installed on the inner end of the rotating shaft 1010. The end of the swing arm 1101 away from the rotating shaft 1010 is connected to the connecting rod 1102. The inner end of the connecting rod 1102 is engaged with the inclined surface of the wedge 1103. The wedge 1103 is installed on the guide rod 1104. The guide rod 1104 is radially installed on the thrust tube 1004. An axial guide groove is provided on the inner wall of the insulation sleeve 1006. The guide rod 1104 is engaged with the guide groove.
[0030] When the nozzle antifreeze device 10 sprays, high-pressure water enters the thrust sleeve 1001 through the spray pipe 904. The water pressure acts on the thrust plate 1002, which compresses the return spring 1005. The thrust plate 1002 drives the atomizing nozzle 903 to move outward. At the same time, the wedge block 1103 moves with the thrust pipe 1004. The inclined surface of the wedge block 1103 cooperates with the connecting rod 1102, causing the connecting rod 1102 to move upward. The connecting rod 1102 drives the rotating shaft 1010 to rotate, which in turn drives the baffle 1009 to rotate, opening the nozzle hole. The atomizing nozzle 903 extends out of the insulation sleeve 1006 and begins spraying. After spraying stops, the water supply system is depressurized, the return spring 1005 resets the atomizing nozzle 903, and the round hole 1008 closes under gravity. The thrust tube 1004 can also be equipped with a check valve. After the thrust sleeve 1001 is filled with high-pressure water, the check valve is opened to ensure that the atomizing nozzle 903 extends out of the insulation sleeve 1006 before spraying begins.
[0031] In this embodiment, the connector 1007 includes an inner arc plate and an outer arc plate. The outer arc plate has a through hole and is fixedly connected to the insulation sleeve 1006. The outer arc plate and the inner arc plate are placed on the outer wall of the spray pipe A and screwed together. The insulation sleeve 1006 has a double-layer structure, and its interlayer is filled with insulation cotton. The baffle has a double-layer structure, and the interlayer of the baffle 1009 is filled with insulation cotton.
[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A spray dust suppression device for a bucket wheel excavator, characterized in that: It includes an air compressor (1), an air tank (2), a first compressed air pipeline (3), a water tank (5), a micro-mist host (6), a first water pipeline (7), a micro-mist pipeline (8), and several atomizing spray components (9); The air compressor (1) is connected to the air storage tank (2) through the first compressed air pipeline (3), and the air storage tank (2) is connected to the air inlet of the micro-mist host (6) through the first compressed air pipeline (3). The water tank (5) is connected to the water inlet of the micro-mist host (6) through the first water pipe (7), and a booster pump is installed on the first water pipe (7); The micro-mist host (6) has its micro-mist outlet connected to each of the atomizing spray components (9) via the micro-mist pipeline (8), and each of the atomizing spray components (9) is located at a different position on the bucket wheel machine.
2. The spray dust suppression device for a bucket wheel excavator according to claim 1, characterized in that: The atomizing spray assembly (9) includes a water vapor synthesis box (901), an atomizing integration box (902), and an atomizing nozzle (903); the micro-mist outlet of the micro-mist host (6) is connected to the water vapor inlet of the water vapor synthesis box (901) through the micro-mist pipeline (8), the water vapor outlet of the water vapor synthesis box (901) is connected to the inlet of the atomizing integration box (902) through the water vapor pipeline, the atomizing integration box (902) is connected to a plurality of the atomizing nozzles (903) through the spray pipeline (904), and the atomizing nozzles (903) spray water mist.
3. The spray dust suppression device for a bucket wheel excavator according to claim 2, characterized in that: The first compressed air pipeline (3) is connected to the air inlet of the water-air synthesis box (901) through the second compressed air pipeline (4).
4. The spray dust suppression device for a bucket wheel excavator according to claim 2, characterized in that: It also includes a nozzle antifreeze device (10), which includes a thrust sleeve (1001) connected to the spray pipe (904). A movable thrust plate (1002) is provided inside the thrust sleeve (1001). A central hole (1003) is provided on the thrust plate (1002). A thrust tube (1004) is connected to the thrust plate (1002) at a position corresponding to the central hole (1003). The thrust tube (1004) passes through the nozzle hole on the outer end plate of the thrust sleeve (1001) and is connected to the atomizing nozzle (903). A return spring (1011) is fitted on the thrust tube (1004). One end of the return spring (1011) abuts against the thrust plate (1002), and the other end abuts against the outer end plate of the thrust sleeve (1001). The atomizing nozzle (903) and the thrust sleeve (1001) are fitted with an insulation sleeve (1006). The inner end of the insulation sleeve (1006) is connected to the spray pipeline (904) through a connector (1007). The outer sealing plate of the insulation sleeve (1006) has a round hole (1008). A baffle (1009) is provided outside the round hole (1008). The baffle (1009) is rotatably connected to the outer sealing plate of the insulation sleeve (1006) through a rotating shaft (1010). The rotating shaft (1010) is eccentrically arranged and is driven by an opening and closing mechanism (11).
5. The spray dust suppression device for a bucket wheel excavator according to claim 4, characterized in that: A sealing ring is installed on the outer circumferential surface of the thrust plate (1002).
6. The spray dust suppression device for a bucket wheel excavator according to claim 4, characterized in that: The opening and closing mechanism (11) includes a swing arm (1101), a connecting rod (1102), a wedge (1103), and a guide rod (1104). The swing arm (1101) is vertically installed at the inner end of the rotating shaft (1010). The end of the swing arm (1101) away from the rotating shaft (1010) is connected to the connecting rod (1102). The inner end of the connecting rod (1102) is engaged with the inclined surface of the wedge (1103). The wedge (1103) is installed on the guide rod (1104). The guide rod (1104) is radially installed on the thrust tube (1004). The inner wall of the heat insulation sleeve (1006) is provided with an axial guide groove. The guide rod (1104) is engaged with the guide groove.