A dust suppression device for open pit mine blasting

Abstract

The utility model discloses an open -pit mine stope blasting dust arrestor, including water supply device, water spraying subassembly and support device, wherein: water supply device includes water storage jar, and water storage jar water outlet is equipped with the pressurized pump body, and the water outlet of pressurized pump body has a plurality of water supply mouth, water spraying subassembly is a plurality, and the water inlet of every water spraying subassembly is connected with a water supply mouth through the soft water belt, every water spraying subassembly includes water spraying nozzle and a support device, water spraying nozzle installs on the support device, and the support device is fixed on the ground and is used for supporting water spraying nozzle, and the placement position of each water spraying subassembly can move according to actual demand, to make each water spraying subassembly cooperate and form the water mist coverage area corresponding with the blasting area, the dust arrestor, dust absorption efficiency is very high, and the dust suppression effect is obvious when blasting, and the dust produced when blasting is pressed by the spray mist water column, realizes the source dust suppression.

Description

Technical Field

[0001] This utility model relates to the field of limestone mining technology, specifically to a dust suppression device for blasting in open-pit mines. Background Technology

[0002] Because blasting in mining areas generates a large amount of dust that affects the environment and does not meet requirements, enterprises must intervene to control the dust generated during blasting in order to develop and fulfill their responsibilities.

[0003] Over the years, blasting engineers both domestically and internationally have tried various methods to control blasting dust, such as watering before construction, wet drilling, placing water bags before blasting, filling the blasting area with foaming agent, using fire trucks to spray high-pressure water to suppress dust after blasting, and even purchasing expensive fog cannons for dust suppression. However, due to unsatisfactory results and high costs, these methods cannot be widely adopted, making it a global problem.

[0004] To address the aforementioned issues, a dust suppression device for blasting in open-pit mines is proposed, which sprays a mist of water to suppress the dust generated during blasting, thereby achieving dust suppression at the source. Utility Model Content

[0005] The purpose of this utility model is to provide a dust suppression device for blasting in open-pit mines, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dust suppression device for blasting in an open-pit mine, comprising a water supply device, a water spraying assembly, and a support device, wherein: the water supply device includes a water storage tank, a pressurizing pump body is provided at the outlet of the water storage tank, and the outlet of the pressurizing pump body has multiple water supply ports.

[0007] The water spraying components are multiple, and the inlet of each water spraying component is connected to a water supply outlet via a flexible water hose.

[0008] Each of the water spraying components includes a water nozzle and a support device. The water nozzle is mounted on the support device, which is fixed to the ground to support the water nozzle. The placement of each water spraying component can be moved according to actual needs so that each water spraying component cooperates to form a water mist coverage area corresponding to the blasting area.

[0009] Furthermore, the pressurizing pump body includes a centrifugal pump, which is connected to a signal receiver. The signal receiver can control the start and stop of the pressurizing pump body by receiving signals from a remote controller.

[0010] Furthermore, the dust suppression device also includes a power unit, which is used to provide pressurization power to the pressurization pump body.

[0011] Furthermore, the water supply port of the pressurized pump body includes two types: a running water supply port and a standby water supply port, and a water supply valve is installed on each of the water supply ports.

[0012] Furthermore, the pressurizing pump body includes a centrifugal pump, and the inlet of the centrifugal pump is connected to the outlet of the water storage tank through a joint structure.

[0013] Furthermore, the flexible hose includes a fire hose, and the nozzle includes a fire monitor; the outlet of the fire hose and the inlet of the fire monitor are connected by a first connector.

[0014] Furthermore, the support device includes support legs, a mounting plate, and a connecting plate; the support leg consists of a main leg and a supporting leg, the top of the main leg is connected to the bottom of the mounting plate, the bottom of the main leg is connected to the top of the connecting plate, the supporting leg is evenly fixed around the main leg, and the end of the supporting leg away from the main leg is connected to the top of the connecting plate; the top of the mounting plate is connected to the fire monitor by bolts.

[0015] Analysis shows that this utility model provides a dust suppression device for blasting in open-pit mines, including a water supply device, a water spraying assembly, and a support device. The water supply device includes a water storage tank and a pressure pump at the outlet of the tank. The pressure pump pressurizes the water in the tank to provide pressure for the subsequent water to cover the blasting area in the form of water mist. The pressure pump has multiple water supply outlets. There are multiple water spraying assemblies, each with an inlet connected to a water supply outlet via a flexible water hose. Each water spraying assembly is an independent unit, individually connected to the pressure pump, making the device easier to relocate. The invention connects the water spray assembly and the pressurized pump body, making it easier to adjust the position and angle of the water spray assembly. Each water spray assembly includes a nozzle and a support device. The nozzle is mounted on the support device, which is fixed to the ground to support the nozzle. The placement of each water spray assembly can be moved according to actual needs, so that the water spray assemblies cooperate to form a water mist coverage area corresponding to the blasting area. The support device fixes the nozzle, facilitating movement and placement without affecting blasting operations, making it very convenient to use. Therefore, this invention is easy to operate on-site, has good mobility, simple structure, and wide applicability.

[0016] Compared with the closest existing technology, the technical solution provided by this utility model has the following advantages:

[0017] To address the shortcomings of current methods for controlling blasting dust, such as pre-blasting water spraying, wet drilling, water bags before blasting, foaming agent filling of the blast area, high-pressure water spraying by fire trucks after blasting, and even the purchase of expensive fog cannons, which are often ineffective and costly, this invention comprises a water storage tank, a power unit, a pressurized pump, a remote controller, flexible hoses, valves, and a water spraying assembly. Remote control enables water mist spraying 5 seconds before blasting. The pressurized pump directly pressurizes the water, which, under high pressure, is sprayed from the high-pressure water cannon as a fine mist (water droplets with a diameter <10μm), forming numerous high-speed moving fine water droplets. This water mist falls onto the blast pile, wetting it and reducing dust during mining, thus ensuring highly efficient use of water. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the principle of spray dust suppression in this utility model.

[0019] Figure 2 This is a schematic diagram of the water spray assembly of this utility model.

[0020] In the diagram: 1. Water storage tank; 2. Pressurized pump body; 3. Flexible water hose; 4. Spray nozzle; 5. Power unit; 6. Water supply valve; 7. Water outlet valve; 8. First connector; 9. Main leg; 10. Support leg; 11. Mounting plate; 12. Connecting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0025] like Figure 1 As shown, this utility model provides a technical solution: a dust suppression device for blasting in an open-pit mine, characterized in that it includes a water supply device, a water spraying assembly, and a support device, wherein: the water supply device includes a water storage tank 1, and a pressurized pump body 2 is provided at the outlet of the water storage tank 1, and the outlet of the pressurized pump body 2 has multiple water supply ports; the water spraying assembly consists of multiple components, and the inlet of each water spraying assembly is connected to a water supply port through a flexible water hose 3.

[0026] Multiple water supply ports are provided at the outlet of the pressurizing pump body 2 for connecting the water spray assembly. According to the actual working conditions, by adding water spray assemblies, the coverage area of ​​the water mist of the dust suppression device is increased, and the pressurizing pump body 2 and the water spray assembly are connected by the flexible water hose 3, making it easier to adjust the position and angle of the water spray assembly. Moreover, each water spray assembly is independent of each other, making disassembly and relocation more convenient.

[0027] like Figure 2 As shown, each of the water spraying components includes a water nozzle 4 and a support device. The water nozzle 4 is mounted on the support device, which is fixed to the ground to support the water nozzle 4. The placement of each water spraying component can be moved according to actual needs so that each water spraying component cooperates with each other to form a water mist coverage area corresponding to the blasting area.

[0028] The water nozzle 4 is supported by a support device, which makes it easy to move and place without affecting blasting operations, and is very convenient to use.

[0029] Preferably, in this embodiment, the pressurizing pump body 2 includes a centrifugal pump, which is connected to a signal receiver. The signal receiver can control the start and stop of the pressurizing pump body by receiving signals from a remote controller.

[0030] The centrifugal pump is started via a remote control. Specifically, the centrifugal pump is started 4 to 5 seconds before detonation to ensure that the dust suppression device detonates when it forms a covering water mist. This results in better dust coverage and improves the safety of the equipment.

[0031] Preferably, the dust suppression device further includes a power unit 5, which is used to provide pressurization power to the pressurization pump body 2.

[0032] More preferably, in this embodiment, the power unit 5 uses a 100kW diesel generator to provide power to the pressurization pump body 2, so as to meet the power requirements of the pressurization pump body 2 to pressurize the water and ensure that the equipment can operate stably.

[0033] Preferably, the water supply port of the pressurized pump body includes two types: a running water supply port and a standby water supply port, and a water supply valve 6 is installed on each of the water supply ports.

[0034] Before the dust suppression device is put into operation, different numbers of water supply outlets can be selected by controlling the water supply valve 6 and whether the backup water supply outlet is activated according to the actual working conditions. During the operation of the dust suppression device, when a running water supply outlet fails, a backup water supply outlet can be selected to avoid delaying work efficiency.

[0035] Preferably, the spray nozzle 4 and the support device are connected by bolts; this facilitates disassembly of the spray nozzle 4 and the support device, and thus makes relocation easier.

[0036] Preferably, the outlet of the water storage tank 1 is equipped with a water outlet valve 7; the water outlet valve 7 is used to control the water storage tank 1, thereby improving the reliability of the equipment and strengthening the control of the equipment.

[0037] Preferably, in this embodiment, the pressurizing pump body 2 includes a centrifugal pump, and the inlet of the centrifugal pump is connected to the outlet of the water storage tank 1 through a connector structure.

[0038] Using a centrifugal pump as the pressurizing pump body 2 of this equipment has the advantage that the centrifugal pump relies on the centrifugal force generated by the rotation of the impeller to transport liquid. The output liquid is stable and without pulsation, avoiding the impact of pulses on the flexible water hose 3 and the equipment. In addition, as long as there is liquid in the water storage tank 1, the centrifugal pump can work normally, avoiding the risk of damage to the mechanical seal and bearings due to dry running (running without liquid).

[0039] The centrifugal pump and the water storage tank 1 are connected by a joint structure, which facilitates the disassembly and replacement of the centrifugal pump and improves the sealing between the two.

[0040] More preferably, in this embodiment, the pressurizing pump body 2 can be composed of two 37kW centrifugal pumps connected in parallel between the water storage tank 1 and the flexible water hose 3. The purpose is to increase the flow rate through the centrifugal pumps and indirectly improve the dust suppression effect of the equipment. The two centrifugal pumps directly pressurize the water, and under high pressure, the water is sprayed out from the spray nozzle 4 in the form of micro-mist (water mist particles with a diameter of <10μm), forming many high-speed moving fine water mists. Because it is a water mist spray, the dust collection efficiency is very high. The spray distance is 30 meters, the coverage area is 1800㎡, and the limestone blasting volume is 40,000 tons.

[0041] Preferably, in this embodiment, the flexible hose 3 includes a fire hose, and the spray nozzle 4 includes a fire monitor; the outlet of the fire hose and the inlet of the fire monitor are connected by a first connector 8.

[0042] Fire hoses are typically made of high-strength synthetic fibers such as polyester and nylon, woven into tubes and coated with rubber or PVC on both the inside and outside. This ensures that pressurized liquid will not burst when passing through the fire hose. Also, since blasting sites are generally rough surfaces, the outer material of the fire hose has excellent wear resistance. In addition, fire hoses can provide a larger flow rate and a longer range at the same pump pressure and distance, thereby improving the dust suppression effect.

[0043] Preferably, the support device includes support legs, mounting plate 11, and connecting plate 12; the support leg consists of main leg 9 and auxiliary leg 10, the top of the main leg 9 is connected to the bottom of the mounting plate 11, the bottom of the main leg 9 is connected to the top of the connecting plate 12, the auxiliary leg 10 is evenly fixed around the main leg 9, and the end of the auxiliary leg 10 away from the main leg 9 is connected to the top of the connecting plate 12; the top of the mounting plate 11 is connected to the fire monitor by bolts.

[0044] like Figure 2 As shown, the fire monitor (i.e., the spray nozzle) is fixed to the support leg by the mounting plate 11, and the stability is enhanced by the connecting plate 12. While providing support for the fire monitor, the position of the fire monitor can be changed by moving the support leg, making it more convenient to move and place the fire monitor without affecting the blasting operation.

[0045] The specific process of using this device to suppress dust generated during blasting is as follows:

[0046] During the preparation phase, based on the site conditions of the blasting location, a reasonable number of water spray components are selected and arranged accordingly. During the operation phase, the water supply valve 6 and the water outlet valve 7 are opened. Five seconds before the blast, the power unit 5 is started to provide power to the water supply device. At the same time, a signal is transmitted to the signal receiver on the pressurization pump body 2 via a remote controller, thereby starting the pressurization pump body 2, pressurizing the water in the water storage tank 1, and transferring it to the flexible water hose 3. The water is then sprayed out in the form of a fine mist through the spray nozzles 4 of the water spray components. The water mist falls on the blast pile, wetting it and reducing dust during the blast. In addition, after the blast, the effect is checked to adjust the position and angle of the water spray components, providing data for subsequent blasts.

[0047] In summary, this utility model achieves the following technical effects:

[0048] 1) In this utility model, the start-up of the pressurized pump body 2 is controlled by a remote controller, ensuring that the operator stays away from the blasting point and maintains a safe distance, thus ensuring the operator's construction safety.

[0049] 2) In this utility model, the water spraying assembly consists of two parts: the water spray nozzle 4 and the support device. Each water spraying assembly is separated into an independent unit, which facilitates the disassembly and relocation of the water spraying assembly and improves the flexibility of the equipment.

[0050] 3) The number and layout of the water spray components in this utility model are selected according to the actual working conditions to improve the adaptability to different blasting sites and increase the coverage area of ​​the water mist.

[0051] 4) In this utility model, the flexible water hose 3 enables the connection between the water spray assembly and the pressurized pump body 2, which facilitates the adjustment of the position of the water spray assembly and improves the flexibility of the device.

[0052] 5) In this utility model, water is directly pressurized by the pressurizing pump body 2. Under high pressure, the water is sprayed out from the spray nozzle 4 in the form of micro-mist (water mist particles with a diameter of <10μm), forming many high-speed moving fine water mists, which improves the dust collection efficiency.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust suppression device for blasting in an open-pit mine, characterized in that, Includes water supply device, water spray assembly and support device, wherein: The water supply device includes a water storage tank and a booster pump body at the outlet of the water storage tank. The outlet of the booster pump body has multiple water supply ports. The water spraying components are multiple, and the inlet of each water spraying component is connected to a water supply outlet via a flexible water hose. Each of the water spraying components includes a water nozzle and a support device. The water nozzle is mounted on the support device, which is fixed to the ground to support the water nozzle. The placement of each water spraying component can be moved according to actual needs so that each water spraying component cooperates to form a water mist coverage area corresponding to the blasting area.

2. The dust suppression device according to claim 1, characterized in that, The pressurizing pump body includes a centrifugal pump, which is connected to a signal receiver. The signal receiver can control the start and stop of the pressurizing pump body by receiving signals from a remote controller.

3. The dust suppression device according to claim 2, characterized in that, It also includes a power unit, which provides pressurization power to the pressurization pump body.

4. The dust suppression device according to claim 1, characterized in that, The pressurized pump body has two types of water supply ports: a running water supply port and a standby water supply port, and a water supply valve is installed on each of the water supply ports.

5. The dust suppression device according to claim 1, characterized in that, The water nozzle and the support device are connected by bolts.

6. The dust suppression device according to claim 1, characterized in that, The water storage tank is equipped with an outlet valve.

7. The dust suppression device according to claim 6, characterized in that, The pressurizing pump body includes a centrifugal pump, and the inlet of the centrifugal pump is connected to the outlet of the water storage tank through a joint structure.

8. The dust suppression device according to claim 1, characterized in that, The flexible hose includes a fire hose, and the spray nozzle includes a fire monitor. The outlet of the fire hose and the inlet of the fire monitor are connected by a first connector.

9. The dust suppression device according to claim 8, characterized in that, The support device includes support legs, mounting plate, and connecting plate; The support leg consists of a main leg and a support leg. The top of the main leg is connected to the bottom of the mounting plate, and the bottom of the main leg is connected to the top of the connecting plate. The support leg is evenly fixed around the main leg, and the end of the support leg away from the main leg is connected to the top of the connecting plate. The top of the mounting plate is bolted to the fire monitor.

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