Spraying dust suppression device used in ore unloading bin of railway dump car

Abstract

The utility model discloses a spraying dust suppression device used in an ore unloading bin of a railway dump truck, which comprises a spraying square frame assembly matched with the size of the ore bin and a high-pressure spraying machine used for providing a water source for the spraying square frame assembly, and the spraying square frame assembly is hung in the ore bin through an electric hoist in a hanging mode. The spraying square frame assembly is formed by splicing and welding a spraying transverse pipe, a spraying vertical pipe, a reinforcing rib and an anti-buckling stop lever; a water inlet pipe is arranged on the outer side of the middle of the vertical spraying pipe and connected with a high-pressure spraying machine through a water inlet hose, water flow is conveyed into the vertical spraying pipe and the transverse spraying pipe through the water inlet hose by the high-pressure spraying machine, and a plurality of nozzles are correspondingly arranged on the vertical spraying pipe and the transverse spraying pipe. The suspended dust suppression device adopts a suspended mounting mode, is novel and unique in design, is used for carrying out all-directional suppression on flying dust through the spray nozzle spraying design, enables the dust to agglomerate above the bin opening and fall into the ore bin, not only is good in dust suppression effect, but also does not cause secondary pollution, and is simple in overall structure and easy to manufacture and mount.

Description

Technical Field

[0001] The utility model relates to the technical field of ore bin material conveying, in particular to a spray dust suppression device for a railway self-unloading ore bin. Background Technique

[0002] Qualified ore produced in the iron mine (particle size 0 - 16 mm) is transported to the concave beneficiation raw ore bin for storage by railway self-unloading wagons (hauled by an electric locomotive, 9 cars in each group), and then conveyed to the next process by a belt conveyor for a series of screening to finally obtain iron concentrate products. The electric locomotive hauls the railway self-unloading wagons to unload ore 18 trips during the day shift and 28 trips during the night shift, unloading about 414 cars and more than 20,000 tons of ore every day. Therefore, the stable operation of the concave beneficiation raw ore bin is the key link to ensure the smooth production of Nanshan Mine. There are railway tracks on both sides of the concave beneficiation raw ore bin, and the self-unloading wagons are hauled by an electric locomotive to unload ore on both sides of the ore bin. The self-unloading wagon unloading operation requires a shunter to manually operate the tipping handle on site to unload ore. During the unloading operation, the following problems exist:

[0003] (1) Since the ore material has a relatively fine particle size of 0 - 16 mm, dust is flying during the unloading operation. The shunter is shrouded in dust and has to wear a mask even in hot weather. The blue work clothes before work become grayish-white after work, and the face becomes a mess (dust plus sweat). Workers have to take a bath and wash their work clothes every shift. Shunters work in a harsh environment filled with dust for a long time, and their physical and mental health is greatly harmed.

[0004] (2) Since the ore bin is located at a high place, during the unloading operation, dust spills everywhere, causing great harm to the electric locomotive driver, surrounding equipment, operating personnel and the environment, especially serious when the wind is strong.

[0005] (3) It does not meet the national occupational health standards and the requirements of environmental protection supervision, and faces the risk of suspension of production for rectification.

[0006] To solve the above problems, fog guns and various dust suppression devices have been installed successively in reality. Due to the limitation of the special structure of unloading on both sides of the ore bin, the spray device cannot suppress the overflowing dust at the bin opening in the first time. Once the spray device is turned on, the spray airflow carries the overflowing dust and scatters it everywhere. The shunter will be splashed with muddy water all over the body, and the entire site, vehicles and surrounding equipment will be shrouded in muddy water, resulting in more serious secondary pollution. Especially, the shunter's eyes cannot be opened, posing a greater safety hazard. Therefore, the previously installed dust suppression devices have all been idle.

[0007] The above problems have led to the dust pollution problem in the unloading operation of the concave beneficiation raw ore bin being unable to be effectively solved, which has become a major problem in the production and operation of Nanshan Mine. In the context of the continuous deepening of the construction of green mines, it is urgent to solve this problem.

[0008] Upon retrieval, in the prior art, the patent application number CN202021179547.X discloses a dust suppression device for a mine track self-unloading wagon, in which nozzles are densely arranged on the side of the bunker anti-collision beam to suppress dust. Its defects and problems are as follows: it cannot effectively suppress dust with strong airflow. The key is that when the bunker is full, the ore covers the spray water pipe, resulting in the failure and damage of the dust suppression device and its inability to be used normally. Summary of the Invention

[0009] The purpose of the present utility model is to provide a spray dust suppression device for a railway self-unloading wagon bunker, to eliminate the major problem of dust pollution to the environment during the unloading operation of the railway self-unloading wagon in the concave selection raw ore bunker, liberate employees from the harsh working environment, and strengthen the environmental protection red line, so as to solve the problems raised in the above-mentioned background technology.

[0010] To achieve the above purpose, the present utility model provides the following technical solution: A spray dust suppression device for a railway self-unloading wagon bunker includes a spray square frame assembly adapted to the size of the bunker and a high-pressure spray machine for providing water source for the spray square frame assembly. The spray square frame assembly is suspended and hoisted in the bunker by an electric hoist, and the electric hoist is hung on the ceiling of the bunker; the spray square frame assembly is welded by spray horizontal pipes, spray vertical pipes, reinforcing ribs and anti-latching rods; an inlet pipe is arranged on the outer side of the middle of the spray vertical pipe, the inlet pipe is connected with an inlet hose through a quick-change joint, and the other end of the inlet hose is connected with the high-pressure spray machine. The high-pressure spray machine transports water flow through the inlet hose to the spray vertical pipe and the spray horizontal pipe, and a number of nozzles are correspondingly arranged on the spray vertical pipe and the spray horizontal pipe.

[0011] Preferably, there are four spray horizontal pipes and two spray vertical pipes. The four spray horizontal pipes and the two spray vertical pipes divide the spray square frame assembly into four layers. Three side nozzles are respectively arranged at the front, back, and both ends of each layer of spray vertical pipe. The side nozzles are installed with a downward inclination of 11°, and one lower nozzle is arranged at the lower end face of each spray vertical pipe.

[0012] Preferably, the four spray horizontal pipes are in the same layer as the spray vertical pipes. An electric control valve is arranged at one end of the spray horizontal pipe close to the spray vertical pipe. Two side nozzles are arranged at intervals of 500 mm before and after the spray horizontal pipe and are installed with a downward inclination of 11°. A lower nozzle is arranged at the middle position between the two side nozzles in each section and is installed vertically downward. The nozzles on adjacent spray horizontal pipes are staggered.

[0013] Preferably, a lifting lug is arranged at the top of the reinforcing rib, and the hook end of the electric hoist is hooked on the lifting lug to vertically lift the entire spray square frame assembly.

[0014] Preferably, the nozzle is a 60°-90° conical atomizing nozzle, and the nozzle is installed on the spray horizontal pipe and the spray vertical pipe by means of scribing and drilling and threaded short joints.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. The present utility model adopts a suspension installation method, with novel and unique design. The four-layer nozzles spray at the same time at an angle, completely covering the ore bin opening, suppressing the dust in all directions, making the dust agglomerate above the bin opening and fall into the ore bin. It not only has good dust suppression effect but also will not cause secondary pollution. Since the spray dust suppression slightly increases the humidity of the ore, it also plays a good role in suppressing the dust during the subsequent ore conveying process. Its suspension design not only makes its own installation and maintenance more convenient but also will not hinder the maintenance of the ore bin. Its application has no impact on the existing production conditions and production order, and has reached an ideal state both in economy and practicality.

[0017] 2. The structure of the present utility model is simple, easy to manufacture and install, with less cost investment. It can completely solve the major problem of dust pollution in the ore unloading operation of the concave separation raw ore bin, meet the requirements of environmental protection supervision, liberate the workers from the harsh working environment, and eliminate the risk of suspension of production for rectification due to dust pollution of the environment, playing an active role in the high-quality development of the ore bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of the ore bin of the present utility model;

[0019] Figure 2 is the present utility model Figure 1 installation schematic diagram of the spray device for the 3# ore bin;

[0020] Figure 3 is the present utility model Figure 1 effect diagram of the spray device for the 2# ore bin;

[0021] Figure 4 is the present utility model Figure 3 enlarged view of part A.

[0022] In the figure: 1. Spray horizontal pipe; 101. Electric control valve; 102. Side nozzle; 103. Lower nozzle, 2. Spray vertical pipe; 201. Water inlet pipe; 202. Water inlet hose; 3. Reinforcing rib; 301. Lifting lug; 4. Anti-buckle car blocking rod; 5. Electric hoist; 501. Control box; 6. Ceiling; 7. Anti-buckle car beam; 8. Self-unloading truck; 9. High-pressure spray machine; 901. Controller; 10. Spray square box assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4 , a spray dust suppression device for a railway self-dumping ore bin in this embodiment, includes a spray square frame assembly 10 adapted to the size of the ore bin and a high-pressure spray machine 9 for providing water source for the spray square frame assembly 10. The spray square frame assembly 10 is suspended in the ore bin by an electric hoist 5, and the electric hoist 5 is hung on the ceiling 6 of the ore bin; the spray square frame assembly 10 is welded by a spray horizontal pipe 1, a spray vertical pipe 2, a reinforcing rib 3 and an anti-vehicle-blocking rod 4. A lifting lug 301 is provided at the top of the reinforcing rib 3, and the hook end of the electric hoist 5 is hooked on the lifting lug 301 to vertically lift and suspend the entire spray square frame assembly 10 at the middle line position above the ore bin. The electric hoist 5 is controlled by a control box 501, and the control box 501 is arranged on the column on the side of the ore bin for easy operation by the operator; an inlet pipe 201 is provided on the outer side of the middle of the spray vertical pipe 2. The inlet pipe 201 is connected with an inlet water hose 202 through a quick-release joint, and the other end of the inlet water hose 202 is connected to the high-pressure spray machine 9. The high-pressure spray machine 9 is controlled by a controller 901, and the controller 901 is arranged on the column on the side of the ore bin. The water delivery pipe of the high-pressure spray machine 9 is laid from under the roadbed to both sides of the ore bin opening for convenient connection with the inlet water hose 202. The spray square frame assemblies above three ore bins can share one high-pressure spray main machine (the power and flow rate of the main machine need to meet the requirements that the water mist particles are 20 - 50 microns and the spray straight-line distance of the nozzle is not less than 1.5 meters without the influence of wind) or be independently configured; the high-pressure spray machine 9 transports water flow through the inlet water hose 202 to the spray vertical pipe 2 and the spray horizontal pipe 1. A number of nozzles are correspondingly provided on the spray vertical pipe 2 and the spray horizontal pipe 1. The nozzles are 60° - 90° conical atomizing nozzles, and the nozzles are installed on the spray horizontal pipe 1 and the spray vertical pipe 2 by means of scribing and drilling and threaded short joints.

[0025] In this embodiment, four spray transverse pipes 1 are provided, and two spray risers 2 are provided. The four spray transverse pipes 1 and the two spray risers 2 divide the spray frame assembly 10 into four layers. The spray risers 2 of each layer are respectively provided with three side nozzles 102 at the front, back and both ends, and the side nozzles 102 are installed with an inclination of 11° downward; a lower nozzle 103 is provided on the lower end surface of each spray riser 2, and a total of 26 nozzles are provided on the two spray risers 2; among them, the four spray transverse pipes 1 are 1#, 2#, 3#, and 4# from bottom to top, which are consistent with the layering of the spray risers 2, and the spray transverse pipe 1 is provided with a nozzle 103 at one end close to the spray riser 2. Electric control valve 101, two side nozzles 102 are set at every 500mm before and after the spray cross pipe 1, and are installed at an angle of 11° downward, with a total of 42 nozzles; a lower nozzle 103 is set in the middle of the two side nozzles 102 and installed vertically downward, with a total of 22 nozzles; each spray cross pipe 1 is provided with 64 nozzles, and the nozzles on adjacent spray cross pipes 1 are staggered, and the four spray cross pipes 1 are provided with a total of 284 nozzles; among them, water supply pipes, water inlet pipes 201, quick-change connectors, electric control valves 101, spray pipes, nozzles, nozzle short circuits and other water supply components are all made of stainless steel to avoid nozzle clogging due to rust.

[0026] In actual use, four spray horizontal pipes 1 and two spray vertical pipes 2 are first welded into a spray frame assembly 10 through reinforcing ribs 3 and anti-buckle bar 4, and the length of the spray frame assembly 10 is ensured to match the length of the ore bin, such as Figure 2 , 3 As shown, two electric hoists 5 are firmly hung on the beam of the ceiling 6 according to the spacing of the lifting ears 301 on the spray frame assembly 10, and the hook is on the center line of the ore bin. The hook of the electric hoist 5 is lowered to hook the lifting ears 301 on the spray frame assembly 10, and the two electric hoists 5 are synchronously raised, so that the spray frame assembly 10 is suspended at a suitable position in the upper center of the ore bin, that is, the water mist sprayed by the nozzle achieves the best dust suppression effect, and then two water inlet hoses 202 are respectively connected to the water inlet pipe 201 at the end of the spray frame assembly 10 at one end, and the other end is connected to the high-pressure sprayer 9. The water pipe of the high-pressure sprayer 9 is laid from under the ballast to both sides of the ore bin opening, and then the electric locomotive pulls the self-turning car 8 into the ore bin unloading position, and abuts against the anti-buckle beam 7 when turning over, and the high-pressure sprayer 9 is synchronously turned on, as shown in FIG. Figure 4 As shown, the spray first moistens the surface of the ore inside and outside the car and on the bottom of the silo, as well as the area around the silo opening, and continues to moisten the falling ore, effectively suppressing the secondary dust caused by the falling of a part of the ore flow and the impact of the ore flow on the ore in the silo; the rapid fall of the ore flow impacts the ore at the bottom of the silo to generate a strong airflow that carries a large amount of dust toward the silo opening, and first encounters the first layer of water mist to suppress it; the dust that escapes the net continues to rise and encounters the second layer of water mist to suppress it; the remaining dust rises again and encounters the third layer of water mist to suppress it; the fourth layer of water mist is used to sweep the dust, and finally stops completely at the silo opening.

[0027] In summary, the utility model ingeniously adopts a novel suspension layout method to address the problem that it is difficult to effectively arrange the spraying due to ore unloading operations on both sides of the ore bin. Four-layer spray dust suppression measures are taken to comprehensively suppress the entire process of dust generation during the ore unloading operation of the self-unloading wagon 8, completely solving the industry problem of dust pollution during the ore unloading operation of the railway self-unloading wagon 8. When the nozzle is damaged or the ore bin and the anti-lock vehicle beam need to be repaired, the water inlet hose 202 is removed, and the electric hoist 5 descends, so that the spray box assembly 10 can be quickly removed from the ore bin opening and placed on the ground, facilitating the repair operation. In addition, the spray box assembly 10 is suspended. After the spraying is turned off, the remaining water in the spray pipe will flow out from the nozzles at the lowest layer. Therefore, in the cold winter when it freezes, the spray pipe will not freeze and be damaged. The whole device is ingeniously designed, novel, simple in structure, easy to manufacture, low in cost investment, and safe and reliable in use.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A spray dust suppression device for a railway self-unloading ore bin, comprising a spray square frame assembly (10) adapted to the size of the ore bin and a high-pressure sprayer (9) for supplying water to the spray square frame assembly (10), characterized in that: The described spray box assembly (10) is suspended and hoisted in the ore bin by an electric hoist (5), and the electric hoist (5) is hung on the ceiling (6) of the ore bin; the spray box assembly (10) is formed by welding a spray horizontal pipe (1), a spray vertical pipe (2), a reinforcing rib (3) and an anti-buckle car stop rod (4); an inlet pipe (201) is arranged on the outer side of the middle of the spray vertical pipe (2), the inlet pipe (201) is connected with an inlet hose (202) through a quick-change joint, the other end of the inlet hose (202) is connected with a high-pressure sprayer (9), and the high-pressure sprayer (9) transports water flow to the spray vertical pipe (2) and the spray horizontal pipe (1) through the inlet hose (202), and a number of nozzles are correspondingly arranged on the spray vertical pipe (2) and the spray horizontal pipe (1).

2. The spray dust suppression device for the ore unloading bin of the railway self-dumping car according to claim 1, wherein: There are four spray horizontal pipes (1) and two spray vertical pipes (2). The four spray horizontal pipes (1) and the two spray vertical pipes (2) divide the spray box assembly (10) into four layers. Three side nozzles (102) are respectively arranged at the front, back and both ends on each layer of the spray vertical pipe (2). The side nozzles (102) are installed with a downward inclination of 11°, and one lower nozzle (103) is arranged on the lower end face of each spray vertical pipe (2).

3. The spray dust suppression device for the ore unloading bin of a railway self-dumping car according to claim 2, characterized in that: The four spray horizontal pipes (1) are in the same layer as the spray vertical pipes (2). An electric control valve (101) is arranged at one end of the spray horizontal pipe (1) close to the spray vertical pipe (2). Two side nozzles (102) are arranged at intervals of 500 mm in the front and back of the spray horizontal pipe (1) and are installed with a downward inclination of 11°. A lower nozzle (103) is arranged at the middle position between two adjacent side nozzles (102) and is installed vertically downward. The nozzles on adjacent spray horizontal pipes (1) are arranged staggeredly.

4. A spray dust suppression device for a railway self-dumping ore bin according to claim 1, characterized in that: A lifting lug (301) is arranged at the top of the reinforcing rib (3), and the hook end of the electric hoist (5) is hooked on the lifting lug (301) to vertically lift the entire spray box assembly (10).

5. The spray dust suppression device for the ore unloading bin of a railway self-dumping car according to claim 1, characterized in that: The nozzle is a 60°-90° conical atomizing nozzle, and the nozzle is installed on the spray horizontal pipe (1) and the spray vertical pipe (2) by means of scribing, drilling and threaded nipple.

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