CN104944137B - A kind of portable auto spraying dust falling system for trestle type coal yard - Google Patents

Abstract

The invention specifically relates to a mobile automatic spray dust suppression system used in trestle-type coal storage yards. Its technical solution is: the mobile water tank (5) is fixedly connected with the mobile belt conveyor (1) through the horizontal connector (2), and the upper end of the upper mobile cover (15) is concentrically fixed on the feeder of the system platform (17). At the mouth, the upper and lower ends of the telescopic mobile cover (11) are connected to the upper mobile cover (15) and the lower mobile cover (12), and the synchronous lifting device (6) is connected to the lower mobile cover (12) through their respective wire ropes (7). ) connection; the inner wall of the upper movable cover (15) is equipped with a dust sensor (8) and an upper annular spray device (10); the inner wall of the lower movable cover (12) is equipped with a lower annular spray device (14) and a radar level gauge (13 ), the high-pressure water pump (4) is connected respectively with the upper annular spray device (10) and the lower annular spray device (14) by the high-pressure water pipe (3). The invention has the characteristics of small water consumption, low operating cost, good dust removal effect and simple maintenance.

Description

A mobile automatic spray dust suppression system for trestle type coal storage yard

technical field

The invention belongs to the technical field of mobile automatic spray dust suppression system. In particular, it relates to a mobile automatic spray dust suppression system used in trestle-type coal storage yards.

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 invention aims to overcome the defects of the prior art, and aims to provide a mobile automatic spray dust suppression system for trestle-type coal storage yards 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 end of the upper movable cover is concentrically fixed at the feeding port of the system platform, the upper end of the telescopic movable cover is fixedly connected with the lower end of the upper movable cover, and the lower end of the telescopic movable cover is fixedly connected with the upper end of the lower movable cover. The upper plane of the system platform is evenly equipped with 3~4 synchronous lifting devices, each synchronous lifting device is at the same distance from the center of the feed inlet, and each synchronous lifting device is connected to the corresponding steel wire connection ring on the upper end of the lower moving cover through its own wire rope connect.

Two dust sensors are installed horizontally on the inner wall close to the top of the upper moving cover, and the two dust sensors are arranged at an angle of 90° along the circumferential direction, and an upper ring spray device is installed horizontally on the inner wall near the upper part of the upper moving cover, close to the lower moving The inner wall of the lower end of the cover is horizontally equipped with a lower annular spray device, and the inner wall of the middle part of the lower moving cover is equipped with a radar level gauge. 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 annular spray device and the lower annular spray device respectively through the high-pressure water pipe.

The mobile automatic spray dust suppression system used in trestle-type coal storage yard is provided with a controller.

The upper annular spray device is composed of 2 layers of upper annular water pipes and upper nozzles; each layer of upper annular water pipes is evenly equipped with 10 to 30 upper nozzles in the radial direction, and the upper nozzles are installed horizontally or obliquely upwards. It means that the upper nozzle faces upward and the angle with the horizontal plane is less than 30°. A solenoid valve is installed between the upper annular water pipe of the two layers of upper annular water pipes and the high-pressure water pipe.

The lower annular spray device is composed of 2 layers of lower annular water pipes and lower nozzles; each layer of lower annular water pipes is evenly equipped with 10-50 lower nozzles inward along the radial direction, and the lower nozzles in the lower annular water pipes of the upper layer are arranged along the horizontal direction. The direction is installed, and the lower nozzle in the lower circular water pipe of the lower floor is 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 material of the telescopic mobile cover is soft material.

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 connected to 3~4 synchronous lifting devices through a cable are respectively connected, and the output interface 2 of the controller is connected with the solenoid valve through a cable.

The state of use of the mobile automatic spray dust suppression system for the trestle type coal storage yard is that the left end of the mobile belt conveyor 1 is equipped with a set of the mobile automatic spray dust suppression system for the trestle type coal storage yard. The right end of the belt conveyor is equipped with another mobile automatic spray dust suppression system for the trestle type coal storage yard. 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 mobile automatic spray dust suppression system of the trestle type coal storage yard or another set of the mobile automatic spray dust suppression system used in the trestle type coal storage yard is installed on the right end.

The telescopic moving cover, the upper moving cover and the lower moving cover are combined to form a vertical coal drop channel. When the coal is unloaded to the set height, the radar level gauge will feed back the measured material level signal to the control through the input interface 1. Then the controller outputs control signals to the synchronous lifting device through the output interface 1, and the synchronous lifting device drives the telescopic mobile cover and the lower mobile cover to move upward through the wire rope to meet the unloading of coal at different heights in the coal storage yard. When unloading coal, the upper annular spray device humidifies the loose falling coal and suppresses the dust, and the lower annular spray device effectively suppresses the large amount of dust and humidifies the falling coal and the coal pile when the falling coal and the coal pile collide; The dust sensor installed on the upper inner wall of the mobile cover can monitor the dust concentration in real time, 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 switch of the solenoid valve , to realize the adjustment of the spray volume of nozzles on one or two layers, 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 telescopic movable cover, upper movable cover and lower movable cover move synchronously with the existing mobile belt conveyor, and the coal dust generated by falling coal is always restrained in the cover, which greatly reduces the dust range and reduces the treatment cost.

2) An upper annular spray device is installed horizontally near the inner wall of the upper part of the upper movable cover, and a lower annular spray device is installed horizontally near the inner wall of the lower end of the lower movable cover, and the upper annular spray device can realize the opening or closing of the electromagnetic valve according to the dust concentration. Close, and then control and adjust the water consumption, not only saves water, but also has a good effect on dust source control.

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

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 connection diagram of controller 22 of the present invention;

Fig. 5 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 mobile automatic spray dust suppression system used in trestle-type coal storage yard. Described mobile automatic spraying and 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 mobile belt conveyor 1 The wheel frame and the wheel frame of the mobile water tank 5 are fixedly connected by the horizontal connector 2. The system platform 17 is fixedly connected to the horizontal connector 2 through the vertical connector 16, and the middle position of the system platform 17 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 end of the upper movable cover 15 is concentrically fixed at the feeding port of the system platform 17, the upper end of the telescopic movable cover 11 is fixedly connected with the lower end of the upper movable cover 15, and the lower end of the telescopic movable cover 11 is connected with the lower end of the movable cover 12. The upper end is fixedly connected. The upper plane of the system platform 17 is evenly equipped with 4 synchronous lifting devices 6, each synchronous lifting device 6 is equal to the distance from the center of the feed inlet, and each synchronous lifting device 6 corresponds to the upper end of the lower moving cover 12 through its own wire rope 7 The steel wire connecting ring connection.

As shown in Figure 1, two dust sensors 8 are installed horizontally on the inner wall close to the top of the upper moving cover 15, and the two dust sensors 8 are arranged at an angle of 90° along the circumferential direction, and are horizontal near the inner wall of the upper moving cover 15. An upper annular spraying device 10 is installed, a lower annular spraying device 14 is horizontally installed near the inner wall of the lower end of the lower moving cover 12, and a radar level gauge 13 is installed on the inner wall of the lower moving cover 12 middle part. The water inlet of the high-pressure water pump 4 communicates with the movable water tank 5, and the water outlet of the high-pressure water pump 4 communicates with the upper annular spray device 10 and the lower annular spray device 14 through the high-pressure water pipe 3 respectively.

The mobile automatic spray dust suppression system used in trestle-type coal storage yard is provided with a controller 22 .

As shown in Figure 2, the upper annular spraying device 10 is made up of two layers of upper annular water pipes 19 and upper nozzles 18; each layer of upper annular water pipes 19 is evenly equipped with 12 upper nozzles 18 inwardly along the radial direction, and the upper nozzles 18 is installed horizontally or obliquely upward, and obliquely upward means that the upper nozzle 18 faces upward and the angle with the horizontal plane is less than 30°. Solenoid valve 9 is housed between the upper stratum upper annular water pipe 19 and the high pressure water pipe 3 in the upper annular water pipe 19 of 2 layers.

As shown in Figure 3, the lower annular spray device 14 is composed of 2 layers of lower annular water pipes 21 and lower nozzles 20; each layer of lower annular water pipes 21 is evenly equipped with 12 lower nozzles 20 inwardly along the radial direction, and the upper layer and the lower The lower nozzle 20 in the annular water pipe 21 is installed along the horizontal direction, and the lower nozzle 20 in the lower annular water pipe 21 is 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 15 is 1.5-2.5m, and the ratio of the diameter of the lower movable cover 12 to the diameter of the upper movable cover 15 is 1.5-2.0:1.

The material of the telescopic mobile cover 11 is soft material.

As shown in Figure 4, the input interface 1 of the controller 22 is connected with the radar level gauge 13 through a cable, the input interface 2 of the controller 22 is connected with the dust sensor 8 through a cable, and the output interface of the controller 22 1 are respectively connected to 3~4 synchronous lifting devices 6 through cables, and the output interface 2 of the controller 22 is connected to the solenoid valve 9 through cables.

Example 2

A mobile automatic spray dust suppression system used in trestle-type coal storage yard. Except following technical parameter, all the other are with embodiment 1:

Three synchronous lifting devices 6 are installed on the upper plane of the system platform 17;

10-11 or 13-30 upper nozzles 18 are evenly installed inwardly in the radial direction on each upper annular water pipe 19;

A solenoid valve 9 is installed between the lower upper annular water pipe 19 and the high-pressure water pipe 3 in the upper annular water pipe 19 of the second layer;

Each layer of lower annular water pipes 21 is evenly equipped with lower 10-11 or 13-50 lower nozzles 20 inwardly along the radial direction;

The diameter of the upper movable cover 15 is 2.0~3.0m, and the ratio of the diameter of the lower movable cover 12 to the diameter of the upper movable cover 15 is (2.0~2.5):1.

The use state of this specific embodiment is shown in Figure 5, and a set of described mobile automatic spraying and dust suppression system 23 for trestle type coal storage yard is housed on the left end of mobile belt conveyor 1, on the right end of mobile belt conveyor 1 Equipped with another set of mobile automatic spray dust suppression system 25 for trestle type coal storage yard. When in use, the coal is unloaded from the coal unloading hopper 24 onto the mobile belt conveyor 1, 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 One set of the mobile automatic spray dust suppression system 23 for the trestle type coal storage yard or another set of the mobile automatic spray dust suppression system 25 for the trestle type coal storage yard installed at the right end.

In this specific embodiment, the telescopic moving cover 11, the upper moving cover 15 and the lower moving cover 12 are combined to form a vertical coal drop channel. When the coal is unloaded to the set height, the radar level gauge 13 will measure the material The bit signal is fed back to the controller 22 through the input interface 1, and then the controller 22 outputs a control signal to the synchronous lifting device 6 through the output interface 1, and the synchronous lifting device 6 drives the telescopic mobile cover 11 and the lower mobile cover 12 to move upward through the wire rope 7 To meet the unloading of coal at different heights of the coal storage yard. When the coal is discharged, the upper annular spray device 10 humidifies the loose coal falling and suppresses the dust, and the lower ring spray device 14 effectively suppresses the large amount of dust generated and humidifies the falling coal and the coal pile when the falling coal collides with the coal pile; The dust sensor 8 installed on the upper inner wall of the upper moving cover 15 can monitor the dust concentration in real time, feed back the monitored dust concentration signal to the controller 22 through the input interface 2, and the controller 22 outputs the corresponding switch signal to the solenoid valve 9 through the output interface 2 , thereby controlling the switch of the electromagnetic valve 9 to realize the adjustment of the spray volume of the nozzles 18 on one or two layers, 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 telescopic mobile cover 11, the upper mobile cover 15 and the lower mobile cover 12 move synchronously with the existing mobile belt conveyor 1, and the coal dust generated by falling coal is always contained in the cover, which greatly reduces the range of dust and reduces the pollution control. cost.

2. An upper annular spraying device 10 is installed horizontally near the inner wall of the upper part of the upper moving cover 15, and a lower annular spraying device 14 is installed horizontally near the inner wall of the lower end of the lower moving cover 12, and the upper annular spraying device 10 can be realized according to the dust concentration. The opening or closing of the solenoid valve 9, and then control and adjust the water consumption, not only saves water, but also has a good effect on dust source control.

3. The lower moving cover 12 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.

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

Claims (7)

1. A mobile automatic spray dust suppression system for trestle type coal storage yard is characterized in that the structure of the mobile automatic spray dust suppression system is: a mobile water tank ( 5), the mobile water tank (5) is located in front of the discharge chute of the mobile belt conveyor (1), and the wheel frame of the mobile belt conveyor (1) and the wheel frame of the mobile water tank (5) pass through the horizontal connector (2) Fixedly connected; system platform (17) is fixedly connected with described horizontal connector (2) by vertical connector (16), and the middle position of system platform (17) is provided with feed inlet, and described feed inlet is positioned at mobile Type belt conveyor (1) directly below the discharge chute; the upper end of the upper movable cover (15) is concentrically fixed at the feeding port of the system platform (17), and the upper end of the telescopic movable cover (11) and the upper movable cover The lower end of (15) is fixedly connected, and the lower end of the telescopic mobile cover (11) is fixedly connected with the upper end of the lower mobile cover (12); the upper plane of the system platform (17) is evenly equipped with 3~4 synchronous lifting devices (6 ), each synchronous lifting device (6) is equal to the distance from the center of the feed inlet, and each synchronous lifting device (6) is connected with the steel wire connection ring corresponding to the upper end of the lower moving cover (12) by a respective steel wire rope (7); Two dust sensors (8) are installed horizontally on the inner wall close to the top of the upper moving cover (15), and the two dust sensors (8) are arranged at an angle of 90° along the circumferential direction, close to the upper inner wall of the upper moving cover (15) The upper annular spray device (10) is installed horizontally at the place, the lower annular spray device (14) is installed horizontally near the inner wall of the lower end of the lower movable cover (12), and the inner wall of the middle part of the lower movable cover (12) is equipped with a radar level gauge ( 13); 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 with the upper annular spray device (10) and the lower annular spray device (14) through the high-pressure water pipe (3) respectively connected; The mobile automatic spray dust suppression system used for trestle type coal storage yard is provided with a controller (22). 2. The mobile automatic spray dust suppression system for the trestle type coal storage yard according to claim 1, characterized in that the upper ring spray device (10) consists of 2 layers of upper ring water pipes (19) and upper nozzles (18 ) composition; the upper annular water pipe (19) on each layer is evenly equipped with 10-30 upper nozzles (18) inward along the radial direction, and the upper nozzles (18) are installed horizontally or obliquely upward, and obliquely upward refers to the upper nozzle ( 18) upward and the angle with the horizontal plane is less than 30°; a solenoid valve (9) is installed between the upper annular water pipe (19) and the high-pressure water pipe (3) in the upper annular water pipe (19) of the 2 layers. 3. The mobile automatic spray dust suppression system for the trestle type coal storage yard according to claim 1, characterized in that the lower annular spray device (14) consists of 2 layers of lower annular water pipes (21) and lower nozzles (20 ) composition; the lower annular water pipe (21) of each layer is equipped with 10-50 lower nozzles (20) evenly inward along the radial direction, and the lower nozzles (20) in the lower annular water pipe (21) of the upper layer are installed along the horizontal direction , the lower nozzle (20) in the lower annular water pipe (21) of the lower floor is installed vertically downwards. 4. The mobile automatic spray dust suppression system for the trestle type coal storage yard according to claim 1, characterized in that the synchronous lifting device (6) is composed of a synchronous motor, a reducer and a reel; The device is connected with the reel shaft, and the wire rope (7) is wound on the reel. 5. The mobile automatic spray dust suppression system for trestle type coal storage yard according to claim 1, characterized in that the diameter of the upper mobile cover (15) is 1.5 ~ 3m, and the diameter of the lower mobile cover (12) The ratio with the diameter of the upper moving cover (15) is (1.5 ~ 2.5): 1. 6. The mobile automatic spray dust suppression system for trestle-type coal storage yard according to claim 1, characterized in that the material of the telescopic mobile cover (11) is soft material. 7. The mobile automatic spray dust suppression system for trestle type coal storage yard according to claim 1, characterized in that the input interface 1 of the controller (22) is connected with the radar level gauge (13) through a cable, The input interface 2 of the controller (22) is connected to the dust sensor (8) through a cable, and the output interface 1 of the controller (22) is connected to 3 to 4 synchronous lifting devices (6) respectively through a cable. The output interface 2 of the controller (22) is connected with the solenoid valve (9) through a cable.