Crushing, screening, discharging, blocking and dust suppression device for surface mine

Abstract

The utility model provides a surface mine crushing, screening, discharging, blocking and dust suppression device which comprises a discharging hopper blocking plate and a discharging blocking cover. The shape of the blanking hopper plugging plate is matched with that of a notch of a blanking hopper for crushing and screening, and the blanking hopper plugging plate is fixedly connected to the notch of the blanking hopper; the discharging blocking cover is arranged between the discharging hopper and the material receiving end of the conveying belt. The discharging blocking cover is in a cuboid shape arranged in the belt conveying direction, a blocking cover feeding port is formed in the top of the discharging blocking cover and connected with a discharging port of the discharging hopper with the notch blocked, and the bottom of the discharging blocking cover and the side portion, facing the discharging direction of the conveying belt, of the discharging blocking cover are open. A plurality of spraying water inlet pipes are vertically and fixedly arranged on the top face of the discharging blocking cover, the bottom ends of the spraying water inlet pipes are inserted into the discharging blocking cover, and spraying heads are installed at pipe openings in the bottom ends of the spraying water inlet pipes. According to the utility model, sealing and water-spraying dust suppression treatment can be carried out on a material source crushed and screened from a surface mine.

Description

Technical Field

[0001] The utility model belongs to the technical field of open-pit mine environmental protection facilities, and in particular relates to an open-pit mine crushing, screening, discharging, blocking and dust suppression device. Background Art

[0002] Dust suppression in open-pit mines during crushing and screening is one of the key issues in environmental protection work in open-pit mines. In the production process of open-pit mines, it is necessary to crush and screen the ore from the mine and transport it to the beneficiation plant through belts for the next production process. Generally, after rough crushing, the ore from the open-pit mine is screened and crushed by belt transportation, and then transported to the beneficiation plant by belts. Although the dust is reduced by the dust collector during the crushing and screening process, the material coming out of the crushing and screening discharge port usually falls directly onto the conveyor belt below the discharge port through the discharge hopper, and one side of the discharge hopper is still open to facilitate discharge. Therefore, dust problems are easily caused during this discharge process. With the intensification of environmental governance efforts, how to reduce the dust caused by the discharge process during ore crushing and screening has become a problem that must be solved in open-pit mines. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an open-pit mine crushing and screening material discharging sealing and dust suppression device in view of the deficiencies of the prior art, so as to seal and spray the material source coming out of the crushing and screening material discharging port to suppress dust.

[0004] In order to solve the above technical problems, the present invention includes:

[0005] A dust suppression device for crushing and screening discharge in an open-pit mine, comprising a lower hopper sealing plate and a discharge sealing cover; the shape of the lower hopper sealing plate is adapted to the shape of the notch of the crushing and screening lower hopper, and the lower hopper sealing plate is fixedly connected to the notch of the lower hopper; the discharge sealing cover is arranged between the lower hopper and the receiving end of a conveying belt; the discharge sealing cover is a rectangular parallelepiped arranged along the conveying direction of the belt, a sealing cover feed port is provided on the top of the discharge sealing cover and the feed port is connected to the discharge port of the lower hopper after the notch is sealed, and the bottom of the discharge sealing cover and the side facing the discharge direction of the conveying belt are both open; a plurality of spray water inlet pipes are vertically fixedly arranged on the top surface of the discharge sealing cover, the bottom ends of the spray water inlet pipes are inserted into the discharge sealing cover and a spray head is installed at the bottom pipe opening.

[0006] Furthermore, the discharge blocking cover is made of waste belts.

[0007] Furthermore, the bottom of the discharge blocking cover is in close contact with the working surface of the conveyor belt.

[0008] Furthermore, it also includes a water control solenoid valve installed on the outer end of the spray water inlet pipe, a bracket vertically fixed on the left and right sides of the conveyor belt, and an infrared diffuse reflection proximity photoelectric switch installed on the top of the bracket; the infrared diffuse reflection proximity photoelectric switch is close to the front side opening of the discharge sealing cover and its output end is connected to the control end of the water control solenoid valve. The infrared diffuse reflection proximity photoelectric switch is used to control the opening of the water control solenoid valve when sensing the discharge of material from the discharge sealing cover, thereby spraying the material source in the discharge sealing cover to suppress dust.

[0009] Furthermore, a spare spray water pipe is fixedly provided on the top of the bracket, a manual valve is installed on the spare spray water pipe, and the outlet of the spare spray water pipe opens toward the side of the discharge blocking cover.

[0010] The beneficial effects of the utility model are:

[0011] The utility model can seal and spray dust suppression on the material source that comes out of the crushing and screening discharge port of the open-pit mine and falls onto the conveyor belt. Firstly, the side gap of the lower hopper is welded and blocked with iron plates to keep the lower hopper tight all around and prevent material from escaping so that the material source coming out of the lower hopper completely enters the discharge sealing cover. A plurality of spray heads are arranged on the top surface of the discharge side of the discharge sealing cover to spray dust suppression on the material source that enters the conveyor belt under the discharge sealing cover.

[0012] The sprinkler head opens automatically. When the infrared diffuse reflection type proximity photoelectric switch senses that there is material output on the conveyor belt, the water control solenoid valve is opened, thereby realizing automatic spraying and dust suppression of the material source, saving a large amount of production water, and achieving energy conservation and environmental protection. The spare sprinkler water pipe is only manually activated when the automatic sprinkler fails to achieve dust suppression in emergencies.

[0013] The utility model has the advantages of simple structure, convenient use and low cost, and can avoid the dust problem caused by screening workshop during screening by sealing and spraying water at the crushing and screening feeding port, which is beneficial to the development of environmental protection work in open-pit mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Markings in the figure: 1. discharge port, 2. discharge hopper sealing plate, 3. discharge sealing cover, 4. water control solenoid valve, 5. sprinkler head, 6. discharge port, 7. spare sprinkler water pipe, 8. infrared diffuse reflection proximity photoelectric switch, 9. bracket, 10. transport belt. DETAILED DESCRIPTION

[0016] To facilitate understanding of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Those skilled in the art should understand that the embodiments are only intended to help understand the present invention and should not be considered as specific limitations of the present invention.

[0017] like Figure 1 As shown, the utility model provides a dust suppression device for crushing and screening discharge in an open-pit mine, including a lower hopper blocking plate 2 and a discharge blocking cover 3; the shape of the lower hopper blocking plate 2 is adapted to the shape of the gap of the lower hopper of the crushing and screening, and the lower hopper is directly connected to the discharge port 1 of the crushing and screening. In the figure, the conveying belt 10 transports the falling material source from right to left. In the prior art, in order to facilitate the discharge of the lower hopper, the left side of the lower hopper is open, that is, there is a gap. In order to solve the dust problem caused by the material source falling directly onto the conveying belt 10, the utility model transfers the material source coming out of the lower hopper to the conveying belt 10 through the discharge blocking cover 3, and sprays the material source coming out of the discharge blocking cover 3 to suppress dust. The installation and use of the discharge blocking cover 3 requires first using the lower hopper blocking plate 2 to block the side gap of the lower hopper. The lower hopper blocking plate 2 is made of iron plate and welded to the side gap of the lower hopper.

[0018] The discharge sealing hood 3 is arranged between the lower hopper and the receiving end of the conveying belt 10; the discharge sealing hood 3 is a rectangular parallelepiped arranged along the conveying direction of the belt, and a sealing hood feed port is provided on the top of the discharge sealing hood 3 and the feed port is connected to the discharge port of the lower hopper after the gap is blocked, and the bottom of the discharge sealing hood 3 and the side facing the discharge direction of the conveying belt 10 are both open, and the bottom of the discharge sealing hood 3 is tightly attached to the working surface of the conveying belt 10; a plurality of spray water inlet pipes 4 are vertically fixed on the top surface of the discharge sealing hood 3, and the bottom end of the spray water inlet pipe 4 is inserted into the discharge sealing hood 3 and a spray head 5 is installed at the bottom pipe mouth.

[0019] The discharging blocking cover 3 of the utility model is made of waste belts. The discharging blocking cover feed port at the top of the discharging blocking cover 3 is also connected with the reserved holes on the four sides of the discharging port of the lower hopper using waste belts.

[0020] The utility model also includes a water control solenoid valve installed on the outer end of the spray water inlet pipe 4, a bracket 9 vertically fixed on the left and right sides of the conveyor belt 10, and an infrared diffuse reflection type proximity photoelectric switch 8 installed on the top of the bracket 9; the infrared diffuse reflection type proximity photoelectric switch 8 is close to the front side opening of the discharge sealing cover 3 and its output end is connected to the control end of the water control solenoid valve, the water control solenoid valve is used to control the on and off of the spray water inlet pipe 4, when the infrared diffuse reflection type proximity photoelectric switch 8 senses that there is a material source in the discharge sealing cover 3, the water control solenoid valve is automatically opened, so as to spray the material source in the discharge sealing cover 3 to suppress dust.

[0021] The model of the infrared diffuse reflection type proximity photoelectric switch 8 is E3F-DS30Y1, with an effective sensing distance of 0.5m, and is vertically set at a position 0.3m above the material source. The connection line between the output end of the infrared diffuse reflection type proximity photoelectric switch 8 and the control end of the water control solenoid valve is laid in a hidden pipe.

[0022] A row of multiple spare spray water pipes 7 are fixedly arranged on the top of the bracket 9. Manual valves are installed on the spare spray water pipes 7, and the outlets of the spare spray water pipes 7 are opened toward the side of the discharge plugging cover 3. The spray water inlet pipe 4 and the spare spray water pipes 7 are connected to the water supply tank through the water guide pipe. The spare spray water pipes 7 are not usually used. Only when the automatic spray fails, they will be manually opened to keep the material moist.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust suppression device for crushing, screening and discharging in an open-pit mine, characterized in that: The utility model comprises a lower hopper blocking plate (2) and a discharge blocking cover (3); the shape of the lower hopper blocking plate (2) is adapted to the shape of the notch of the lower hopper for crushing and screening, and the lower hopper blocking plate (2) is fixedly connected to the notch of the lower hopper; the discharge blocking cover (3) is arranged between the lower hopper and the material receiving end of the conveying belt (10); the discharge blocking cover (3) is in the shape of a rectangular parallelepiped arranged along the conveying direction of the belt, the top of the discharge blocking cover (3) is provided with a blocking cover feed port, and the feed port is connected to the discharge port of the lower hopper after the notch is blocked, and the bottom of the discharge blocking cover (3) and the side facing the discharge direction of the conveying belt (10) are both open; a plurality of spray water inlet pipes (4) are vertically fixedly arranged on the top surface of the discharge blocking cover (3), the bottom ends of the spray water inlet pipes (4) are inserted into the discharge blocking cover (3), and a spray head (5) is installed at the bottom end pipe opening.

2. The open-pit mine crushing and screening discharge blocking and dust suppression device according to claim 1 is characterized in that: The discharge blocking cover (3) is made of waste belts.

3. The open-pit mine crushing and screening discharge blocking and dust suppression device according to claim 1 is characterized in that: The bottom of the discharge blocking cover (3) is in close contact with the working surface of the conveying belt (10).

4. The open-pit mine crushing and screening discharge blocking and dust suppression device according to claim 1 is characterized in that: It also includes a water control solenoid valve installed on the outer end of the spray water inlet pipe (4), a bracket (9) vertically fixedly arranged on the left and right sides of the conveying belt (10), and an infrared diffuse reflection type proximity photoelectric switch (8) installed on the top of the bracket (9); the infrared diffuse reflection type proximity photoelectric switch (8) is close to the front side opening of the discharge blocking cover (3) and its output end is connected to the control end of the water control solenoid valve. The infrared diffuse reflection type proximity photoelectric switch (8) is used to control the opening of the water control solenoid valve when sensing the discharge of the discharge blocking cover (3), thereby spraying and suppressing dust on the material source in the discharge blocking cover (3).

5. The open-pit mine crushing and screening discharge blocking and dust suppression device according to claim 4 is characterized in that: A spare spray water pipe (7) is also fixedly arranged on the top of the bracket (9), a manual valve is installed on the spare spray water pipe (7), and the water outlet of the spare spray water pipe (7) opens toward the side of the discharge blocking cover (3).

Images