CN104960944A - Dust falling system for trestle type coal unloading - Google Patents

Abstract

The invention relates to a dust suppression system for trestle type coal unloading. Its technical scheme is: the mobile water tank (5) is fixedly connected with the mobile belt conveyor (1), the upper end of the upper mobile cover (16) is fixed at the feeding port of the system platform (18), and the lower mobile cover (15) is located at Below the upper movable cover (16), the synchronous lifting device (6) is connected with the lower movable cover (15) by a wire rope (7). The inner wall of the upper movable cover (16) is equipped with an upper annular spray device (8); the inner wall of the lower movable cover (15) is sequentially equipped with a dust sensor (9), a first layer of lower annular spray device (14), a radar Level meter (11), second floor lower ring device (12) and third layer lower ring spray device (13). The high-pressure water pump (4) passes through the high-pressure water pipe (3) and the upper ring spray device (8), the first layer of the lower ring spray device (14), the second layer of the lower ring device (12) and the third layer of the lower ring spray device (13 ) are connected separately. The invention has the characteristics of small water consumption, low operating cost, good dust removal effect and simple maintenance.

Description

A Dust Suppression System for Trestle Unloading Coal

technical field

The present invention belongs to the technical field of dust suppression system. In particular, it relates to a dust suppression system for trestle unloading coal.

Background technique

Due to the flow of materials, on-site loading and unloading operations, and wind disturbances in the coal storage yard of coal enterprises, coal dust is diffused in the air, and the coal dust suspended in the air has the risk of explosion, and the loss of coal dust will cause waste of resources and pollute the surrounding environment. Because the trestle-type coal storage yard has the advantages of simple storage system and low investment, it is currently used by many coal storage yards. When the trestle-type coal storage yard is working, the coal is directly unloaded by the mobile belt conveyor on the top, which will generate a lot of coal dust and cause environmental pollution in the entire coal storage yard. In order to solve the serious over-limit problem of coal dust concentration in the coal storage yard, a sprinkler system is generally installed on the top of the coal storage yard to reduce dust with fog curtains. However, this system will cause high humidity in the entire coal storage shed and poor visibility, which will affect the work of workers. Moreover, the water consumption is large and maintenance is difficult; there are also coal storage yards that use telescopic chutes to reduce dust, but the chutes are severely worn and the dust removal effect is poor.

In short, the existing dust suppression technology generally has problems such as large water consumption, high operating cost, difficult maintenance, large dust range and poor dust removal effect.

Contents of the invention

The present invention aims to overcome the defects of the prior art, and aims to provide a dust suppression system for trestle-type coal unloading with small water consumption, low operating cost, good dust removal effect and simple maintenance.

In order to achieve the above object, the technical scheme adopted in the present invention is: a mobile water tank is installed on the track of the mobile belt conveyor, the mobile water tank is positioned at the front of the discharge chute of the mobile belt conveyor, the wheel frame and the mobile belt conveyor of the mobile belt conveyor The wheel frame of the type water tank is fixedly connected by a horizontal connector. The system platform is fixedly connected to the horizontal connector through a vertical connector, and a feed inlet is provided in the middle of the system platform, and the feed inlet is located directly below the discharge chute of the mobile belt conveyor. The upper plane of the system platform is evenly equipped with 3~4 synchronous lifting devices, and the distance between each synchronous lifting device and the center of the feeding port is equal. The upper end of the upper moving cover is concentrically fixed at the feeding port of the system platform, the lower moving cover is located directly below the upper moving cover, and 3~4 synchronous lifting devices are connected to the corresponding steel wire connecting rings on the upper end of the lower moving cover through their respective steel wire ropes connect.

An upper annular spray device is installed horizontally on the inner wall close to the middle of the upper moving cover, and two dust sensors are installed horizontally on the inner wall near the top of the lower moving cover. The inner wall of the upper part of the moving cover is equipped with the first layer of lower ring spray device, the inner wall near the middle of the lower moving cover is equipped with a radar level gauge, and the inner wall near the lower part of the lower moving cover is equipped with the second layer of lower ring device and the third layer of lower ring Spray device, the third layer of lower ring spray device is located below the second layer of the lower ring device. The water inlet of the high-pressure water pump communicates with the movable water tank, and the water outlet of the high-pressure water pump communicates with the upper ring spray device, the first layer lower ring spray device, the second layer lower ring device and the third layer lower ring spray device respectively through the high pressure water pipe.

The dust suppression system for trestle unloading coal is provided with a controller.

The upper annular spraying device is composed of an upper annular water pipe and an upper nozzle. The upper annular water pipe is evenly equipped with 10~30 upper nozzles radially inward, and the upper nozzles are installed horizontally or obliquely upwards. The oblique upward means that the upper nozzles are upward and the angle with the horizontal plane is less than 30°.

The first layer of lower annular spraying device is composed of the first layer of lower annular water pipes and the first layer of lower nozzles. The first layer of lower annular water pipe is evenly equipped with 10~50 first layer of lower nozzles in the radial direction, and the first layer of lower nozzles is installed along the horizontal direction; a solenoid valve is installed between the first layer of lower annular water pipe and the high-pressure water pipe .

The second-layer lower annular spraying device is composed of a second-layer lower annular water pipe and a second-layer lower nozzle. 10 to 50 second-layer lower nozzles are evenly installed in the second-layer lower annular water pipe radially inwardly, and the second-layer lower nozzles are installed along the horizontal direction.

The lower annular spray device of the third layer is composed of the lower annular water pipe of the third layer and the lower nozzle of the third layer. The annular water pipe under the third layer is evenly equipped with 10 to 50 lower nozzles of the third layer radially inward, and the lower nozzles of the third layer are installed vertically downward.

The synchronous lifting device is composed of a synchronous motor, a reducer and a reel; the synchronous motor is connected with the reel shaft through the reducer, and the wire rope is wound on the reel.

The diameter of the upper moving cover is 1.5-3m, and the ratio of the diameter of the lower moving cover to the diameter of the upper moving cover is (1.5-2.5)︰1.

The length of the upper moving cover is 2-5m, and the length of the lower moving cover is 5-15m.

The input interface 1 of the controller is connected to the radar level gauge through a cable, the input interface 2 of the controller is connected to the dust sensor through a cable, and the output interface 1 of the controller is synchronized with 3~4 dust sensors through a cable. The lifting devices are connected respectively, and the output interface 2 of the controller is connected with the solenoid valve through a cable.

The use state of the dust suppression system for trestle unloading coal is that a set of dust suppression system for trestle unloading coal is installed on the left end of the mobile belt conveyor, and another set of the dust suppression system for trestle unloading coal is installed on the right end of the mobile belt conveyor. Dust suppression system for trestle unloading coal.

When in use, the coal is unloaded from the coal unloading hopper to the mobile belt conveyor, and the belt of the mobile belt conveyor is turned left or right to unload the coal from the unloading chute, and the coal falls into a set of gears installed on the left end. It is used in the dust suppression system for trestle unloading coal or another set of the dust suppression system for trestle unloading coal is installed on the right end. When the coal is unloaded to the set height, the radar level gauge will feed back the measured material level signal to the controller through the input interface 1, and then the controller will output the control signal to the synchronous lifting device through the output interface 1, and the synchronous lifting device is driven by the wire rope. The lower moving hood moves upwards to satisfy coal unloading at different heights of the coal storage yard. When coal is discharged, the upper ring spray device humidifies the loose coal and suppresses dust. The lower annular spraying device on the second layer and the lower annular spraying device on the third layer can effectively suppress a large amount of dust generated and humidify the falling coal and the coal pile when the coal falling and the coal pile impact. In addition, the dust sensor installed on the inner wall of the top of the lower moving cover can monitor the dust concentration in real time, and feed back the monitored dust concentration signal to the controller through the input interface 2, and the controller outputs the corresponding switch signal to the solenoid valve through the output interface 2, thereby controlling the solenoid valve The switch realizes the opening or closing of the annular spray device under the first layer, which not only achieves the purpose of dust reduction, but also saves water consumption.

Owing to adopting above-mentioned technical scheme, the present invention has following positive effect compared with prior art:

1. The upper moving cover and the lower moving cover move synchronously with the existing mobile belt conveyor, and the coal dust generated by falling coal is basically restrained in the lower moving cover, which greatly reduces the dust range and reduces the treatment cost.

2. The annular spray device on the first floor can realize the opening or closing of the solenoid valve according to the dust concentration, and then control and adjust the water consumption, which not only saves water, but also has a good effect on dust source control.

3. According to the set material level, the lower moving cover can move up and down under the drive of the synchronous lifting device, which can meet the requirements of unloading coal at different heights of coal piles.

4. The overall structure is simple, the operability is good, and mechanical failure is not easy to occur.

Therefore, the present invention has the characteristics of small water consumption, low operating cost, good dust removal effect and simple maintenance.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is the A-A sectional enlarged schematic diagram of Fig. 1;

Fig. 3 is the B-B sectional enlarged schematic diagram of Fig. 1;

Fig. 4 is the C-C sectional enlarged schematic diagram of Fig. 1;

Fig. 5 is the D-D sectional enlarged schematic diagram of Fig. 1;

Fig. 6 is the schematic diagram of controller 23 among the present invention;

Fig. 7 is a schematic diagram of the application of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, without limiting its protection scope.

Example 1

A dust suppression system for trestle unloading coal. Described dust suppression system as shown in Figure 1, on the track of mobile belt conveyor 1, mobile water tank 5 is housed, and mobile water tank 5 is positioned at the front of mobile belt conveyor 1 discharge chute, and the wheel frame of mobile belt conveyor 1 and The wheel frame of mobile water tank 5 is fixedly connected by horizontal connector 2. The system platform 18 is fixedly connected with the horizontal connector 2 through the vertical connector 17, and the middle position of the system platform 18 is provided with a feed inlet, and the feed inlet is located directly below the discharge chute of the mobile belt conveyor 1. The upper plane of the system platform 18 is evenly equipped with 4 synchronous lifting devices 6, and each synchronous lifting device 6 is equal to the distance from the center of the feed inlet. The upper end of the upper moving cover 16 is concentrically fixed at the feeding port of the system platform 18, the lower moving cover 15 is located directly below the upper moving cover 16, and the four synchronous lifting devices 6 are connected to the upper end of the lower moving cover 15 through their respective wire ropes 7. Corresponding steel wire connecting ring connection.

As shown in Figure 1, the upper annular spraying device 8 is installed horizontally near the inner wall of the upper movable cover 16 middle part, and two dust sensors 9 are installed horizontally near the inner wall of the lower movable cover 15 top, and the two dust sensors 9 are along the The circumferential direction is arranged at an included angle of 90°; the inner wall near the upper part of the lower moving cover 15 is equipped with a first layer of lower annular spray device 14, and the inner wall near the middle part of the lower moving cover 15 is equipped with a radar level gauge 11, which is close to the lower part of the lower moving cover 15 The inner wall of the second layer of the lower ring device 12 and the third layer of the lower ring spray device 13 are equipped with, and the third layer of the lower ring spray device 13 is located below the second layer of the lower ring device 12. The water inlet of the high-pressure water pump 4 communicates with the mobile water tank 5, and the water outlet of the high-pressure water pump 4 connects with the upper annular spray device 8, the lower annular spray device 14 of the first layer, the lower annular device 12 of the second layer and the third layer through the high-pressure water pipe 3. The lower annular spray devices 13 communicate with each other respectively.

The dust suppression system for trestle unloading coal is provided with a controller 23 .

As shown in FIG. 2 , the upper annular spraying device 8 is composed of an upper annular water pipe 20 and an upper nozzle 19 . The upper annular water pipe 20 is evenly equipped with 12 upper nozzles 19 radially inwardly, and the upper nozzles 19 are installed horizontally or obliquely upwards. The oblique upward means that the upper nozzles 19 are upward and the angle with the horizontal plane is less than 30°.

As shown in FIG. 3 , the first-layer lower annular spraying device 14 is composed of a first-layer lower annular water pipe 22 and a first-layer lower nozzle 21 . The lower annular water pipe 22 of the first layer is evenly equipped with 12 lower nozzles 21 of the first layer inwardly along the radial direction, and the lower nozzles 21 of the first layer are installed along the horizontal direction; There is a solenoid valve 10 .

As shown in FIG. 4 , the second-layer lower annular spraying device 12 is composed of a second-layer lower annular water pipe 24 and a second-layer lower nozzle 25 . The annular water pipe 24 under the second layer is evenly equipped with 20 lower nozzles 25 of the second layer radially inwardly, and the lower nozzles 25 of the second layer are installed along the horizontal direction.

As shown in FIG. 5 , the third-layer lower annular spraying device 13 is composed of a third-layer lower annular water pipe 26 and a third-layer lower nozzle 27 . The annular water pipe 26 under the third layer is evenly equipped with 30 lower nozzles 27 of the third layer radially inwardly, and the lower nozzles 27 of the third layer are installed vertically downward.

The synchronous lifting device 6 is composed of a synchronous motor, a reducer and a reel; the synchronous motor is connected with the reel shaft through the reducer, and the steel wire rope 7 is wound on the reel.

The diameter of the upper movable cover 16 is 1.5-2.5m, and the ratio of the diameter of the lower movable cover 15 to the diameter of the upper movable cover 16 is (1.5-2.0):1.

As shown in Figure 7, the height of the trestle in this embodiment from the ground is 30m; the length of the upper moving cover 16 is 2-4m, and the length of the lower moving cover 15 is 5-10m.

As shown in Figure 6, the input interface 1 of the controller 23 is connected with the radar level gauge 11 through a cable, the input interface 2 of the controller 23 is connected with the dust sensor 9 through a cable, and the controller 23 The output interface 1 is respectively connected to 3~4 synchronous lifting devices 6 through cables, and the output interface 2 of the controller 23 is connected to the solenoid valve 10 through cables.

Example 2

A dust suppression system for trestle unloading coal. Except following technical parameter, all the other are with embodiment 1:

The upper plane of the system platform 18 is equipped with three synchronous lifting devices 6 .

The upper annular water pipe 20 is evenly equipped with 10-11 or 13-30 upper nozzles 19 radially inward.

10-11 or 13-50 first-layer lower nozzles 21 are uniformly arranged radially inwardly on the first-layer lower annular water pipe 22 .

10-19 or 21-50 second-layer lower nozzles 25 are evenly equipped with the second-layer lower annular water pipe 24 radially inwardly.

10-29 or 31-50 third-layer lower nozzles 27 are evenly equipped with the third-layer lower annular water pipe 26 radially inwardly.

The diameter of the upper movable cover 16 is 2~3m, and the ratio of the diameter of the lower movable cover 15 to the diameter of the upper movable cover 16 is (2.0~2.5)︰1.

As shown in Figure 7, the height of the trestle in this embodiment from the ground is 40m; the length of the upper moving cover 16 is 3-5m, and the length of the lower moving cover 15 is 10-15m.

The state of use of the dust suppression system for trestle type coal unloading is shown in Figure 7. A set of dust suppression system 28 for trestle type coal unloading is installed on the left end of the mobile belt conveyor 1, and on the right end of the mobile belt conveyor 1 Another set of dust suppression system 30 for trestle unloading coal is installed.

When in use, the coal is unloaded from the coal unloading hopper 29 onto the mobile belt conveyor 1, and the belt of the mobile belt conveyor 1 turns left or right to unload the coal from the unloading chute, and the coal falls into the left end. One set of dust suppression system for trestle type coal unloading or another set of dust suppression system for trestle type coal unloading on the right end. When the coal is unloaded to the set height, the radar level gauge 11 feeds back the measured material level signal to the controller 23 through the input interface 1, and then the controller 23 outputs a control signal to the synchronous lifting device 6 through the output interface 1, and the synchronous lifting The device 6 drives the lower moving cover 15 to move upwards through the steel wire rope 7, so as to satisfy coal unloading at different heights of the coal storage yard. When coal is released, the upper annular spray device 8 humidifies the loose coal to suppress dust. The annular spraying device 12 under the second layer and the annular spraying device 13 under the third layer can effectively suppress a large amount of dust and humidify the falling coal and the coal pile when the falling coal and the coal pile impact. In addition, the dust sensor 9 installed on the inner wall of the top of the lower movable cover 15 can monitor the dust concentration in real time, and feed back the monitored dust concentration signal to the controller 23 through the input interface 2, and the controller 23 outputs the corresponding switch signal to the solenoid valve 10 through the output interface 2 , thereby controlling the switch of the solenoid valve 10 to realize the opening or closing of the annular spray device 14 under the first layer, which not only achieves the purpose of dust reduction, but also saves water consumption.

Compared with the prior art, this specific embodiment has the following positive effects:

1. The upper moving cover 16 and the lower moving cover 15 move synchronously with the existing mobile belt conveyor 1, and the coal dust generated by falling coal is basically restrained in the lower moving cover 15, which greatly reduces the dust range and reduces the treatment cost.

2. The annular spray device 14 on the first layer can realize the opening or closing of the electromagnetic valve 10 according to the dust concentration, and then control and adjust the water consumption, which not only saves water, but also has a good effect on dust source control.

3. The lower moving cover 15 can move up and down under the drive of the synchronous lifting device 6 according to the set material level, which can meet the coal unloading requirements of different coal pile heights.

4. The overall structure is simple, the operability is good, and mechanical failure is not easy to occur.

Therefore, this specific embodiment has the characteristics of small water consumption, low operating cost, good dust removal effect and simple maintenance.

Claims (9)

1. A dust suppression system for trestle type coal unloading is characterized in that the structure of the dust suppression system is: a mobile water tank (5) is housed on the track of the mobile belt conveyor (1), and the mobile water tank (5) Located in front of the discharge chute of the mobile belt conveyor (1), the wheel frame of the mobile belt conveyor (1) and the wheel frame of the mobile water tank (5) are fixedly connected through horizontal connectors (2); the system platform (18) passes The vertical connector (17) is fixedly connected with the horizontal connector (2), and the middle position of the system platform (18) is provided with a feed inlet, and the feed inlet is located in the discharge chute of the mobile belt conveyor (1) directly below; the upper plane of the system platform (18) is evenly equipped with 3 to 4 synchronous lifting devices (6), and each synchronous lifting device (6) is equal to the distance from the center of the feed port; the upper moving cover (16) The upper end of the upper end is concentrically fixed at the feeding port of the system platform (18), the lower moving cover (15) is located directly below the upper moving cover (16), and 3~4 synchronous lifting devices (6) pass through respective wire ropes ( 7) Connect with the steel wire connection ring corresponding to the upper end of the lower moving cover (15); An upper annular spray device (8) is installed horizontally near the inner wall of the middle part of the upper moving cover (16), and two dust sensors (9) are installed horizontally near the inner wall of the top of the lower moving cover (15). (9) Arranged at an included angle of 90° along the circumferential direction, the first layer of lower annular spray device (14) is installed on the inner wall near the upper part of the lower moving cover (15), and the radar object is installed on the inner wall near the middle part of the lower moving cover (15). Position meter (11), the inner wall near the bottom of the lower moving cover (15) is equipped with a second layer of lower ring device (12) and a third layer of lower ring spray device (13), and the third layer of lower ring spray device (13) is located at Below the annular device (12) under the second floor; the water inlet of the high-pressure water pump (4) is communicated with the mobile water tank (5), and the water outlet of the high-pressure water pump (4) is connected to the upper annular spray device (8) through the high-pressure water pipe (3) ), the first floor of the lower annular spraying device (14), the second layer of the lower annular spraying device (12) and the third layer of the lower annular spraying device (13) are connected respectively; The dust suppression system for trestle type coal unloading is provided with a controller (23). 2. The dust suppression system for trestle type coal unloading according to claim 1, characterized in that the upper annular spray device (8) is made up of an upper annular water pipe (20) and an upper nozzle (19); the upper annular water pipe ( 20) There are 10~30 upper nozzles (19) evenly installed inward along the radial direction, and the upper nozzles (19) are installed horizontally or obliquely upward, and obliquely upward means that the upper nozzle (19) faces upward and is clamped with the horizontal plane. The angle is less than 30°. 3. The dust suppression system for trestle type coal unloading according to claim 1, characterized in that the annular spray device (14) under the first layer consists of an annular water pipe (22) under the first layer and a nozzle under the first layer (21) composition; the first layer of lower annular water pipes (22) are evenly equipped with 10 to 50 first layer of lower nozzles (21) inwardly along the radial direction, and the first layer of lower nozzles (21) are installed along the horizontal direction; An electromagnetic valve (10) is housed between the annular water pipe (22) and the high-pressure water pipe (3) under the first floor. 4. The dust suppression system for trestle type coal unloading according to claim 1, characterized in that the annular spray device (12) under the second layer consists of an annular water pipe (24) under the second layer and a nozzle under the second layer (25) form; The annular water pipe (24) under the second layer is evenly equipped with 10～50 second layer lower nozzles (25) along the radial direction, and the second layer lower nozzles (25) are installed along the horizontal direction. 5. The dust suppression system for trestle type coal unloading according to claim 1, characterized in that the annular spray device (13) under the third layer consists of an annular water pipe (26) under the third layer and a nozzle under the third layer (27) composition; the annular water pipe (26) under the third layer is evenly equipped with 10~50 lower nozzles (27) of the third layer inwardly along the radial direction, and the lower nozzles (27) of the third layer are installed vertically downward . 6. The dust suppression system for trestle type coal unloading according to claim 1, characterized in that the synchronous lifting device (6) is composed of a synchronous motor, a reducer and a reel; the synchronous motor is connected to the reel shaft through the reducer To connect, the wire rope (7) is wound on the reel. 7. The dust suppression system for trestle type coal unloading according to claim 1, characterized in that the diameter of the upper moving cover (16) is 1.5 ~ 3m, and the diameter of the lower moving cover (15) is the same as that of the upper moving cover ( 16) The diameter ratio is (1.5~2.5)︰1. 8. The dust suppression system for trestle-type coal unloading according to claim 1, characterized in that the length of the upper moving cover (16) is 2-5m, and the length of the lower moving cover (15) is 5-15m. 9. The dust suppression system for trestle type coal unloading according to claim 1, characterized in that the input interface 1 of the controller (23) is connected to the radar level gauge (11) through a cable, and the control The input interface 2 of the device (23) is connected to the dust sensor (9) through a cable, and the output interface 1 of the controller (23) is respectively connected to 3~4 synchronous lifting devices (6) through a cable, and the controller ( 23) The output interface 2 is connected with the solenoid valve (10) through a cable.